reported for tetrahydrofuran (THF), dimethylformamide (DMF) and dimethylacetamide (DMAC) mobile phases. Access options Buy single article. Dilute solutions of 2% (w/v) PMMA and PEG in THF were prepared separately in different stoppered conical flasks. The solvents that dissolve PMMA are dimethylformamide (DMF) and Diethyl carbonate (DEC). Averaged height differences between the cured PUA domains and the PMMA domains before the THF treatments were ~35 nm, ~72 nm, and ~157 nm for the 10 wt%, 15 wt%, and 20 wt% blended solutions, respectively (Figures 3(a)–3(c)). For this work, PMMA and ultraviolet (UV) curable poly(urethane acrylate) (PUA) were used [17–19], and the phase separation of PMMA/PUA blend was well-driven via solvent evaporation. Nomenclature M N number average molecular weight M W weight average molecular weight x AB Flory–Huggins interaction parameter V ref reference volume d i solubility parameter of species i R gas constant T absolute temperature DG m Gibbs free energy change on mixing DH m enthalpy change on mixing DS m entropy change on mixing V mix volume of the mixture DEV i energy of vaporization of … [ABS, PVC, HIPS] => Acetone and M ethyl E thyl K etone [MEK aka 2-Butanone] will dissolve both ABS and PVC and chemically rebuild the joint in a less ordered manner as the solvents dries. Yue Zhang, Wei Li, Wenwen Zhou, Haoran Jia, Baotong Li. The height profiles are shown in insets. When the value of increased up to ~0.4, the island-like PMMA features were finally connected to each other and formed larger domains (Figure 4(b)). Cyanoacrylate and acrylic [PMMA, MMA, etc] based polymers can get good bonding at the molecular level. The phase separation of PMMA/PUA blend was well-driven via solvent evaporation during spin-coating. Solubility of PMMA inAlcohol-Water Solvent Mixtures 1175 0 10 20 30 40 50 60 70 80 90 100 Ethanol 5 wt-% H. 2. O * * n O O H H O Transmittance [%] I tried to dissolve it in THF but it didn't dissolve properly even after heating at 40. The presence of hydrogen bonding in the blends in the solid state has also been indicated by FTIR studies. Solubilities are in water and are reported as grams solvent/100 grams water. PMMA (Mn = 11,500 g/mol, Mw/Mn = 1.08, Polymer Source Inc.) was used as received, and the UV curable PUA mixture was synthesized in accordance with the previous reports [17]. Conclusions • Solvent-selective solubility of PLGA with different LA:GA ratio holds promise to separate PLGAs with varying LA:GA ratios. The presence of hydrogen bonding in the blends in the solid state has also been indicated by FTIR studies. MeTHF is between THF and Ethylether in Lewis Base strength and polarity Property MeTHF THF Et 2O dielectric const 6.97 7.5 4.42 dipole moment, Debye 1.38 1.69 1.11 water solubility, g/100g 4 mis 1.2 Hildebrand, MPa ½ 16.9 18.7 15.5 solvation energy, kcal/mol 0.6 0 2.3 Donor Number 18 20.5 19.2 In addition, selective dissolution of one component in phase-separated polymer blends provides important advantages for easy fabrication of micro- or nanosized patterns which are widely used in application fields [15, 16]. Tetrahydrofuran (THF), or oxolane, is an organic compound with the formula (CH 2) 4 O. Solubility of Potassium Acetate in Water, 2,2,2-Trifluoroethanol, Ethanol and Their Binary Mixtures at 288.15–333.15 K. Chemical Research in Chinese Universities 2019, 550 DOI: 10.1007/s40242-019-9193-3. (THF) has been investigated by viscosity, density, refractive index, and ultrasonic velocity studies. Morphology of phase-separated structure, including domain size and height, could be controlled by varying total concentration of the blended solution, and various nanoscale features such as island-like and hole-like structures were achieved by changing weight ratio of the two immiscible polymers. Domain structures of spin-coated immiscible poly(methyl methacrylate) (PMMA) and ultraviolet (UV) curable poly(urethane acrylate) (PUA) blends were studied using atomic force microscopy (AFM). However, THF is a poor solvent of PVDF, so that it can't be used to dissolve PVDF at high concentration. The bright region in Figure 2(b) corresponds to the PUA domains dispersed on the substrate after spin-coating. I am trying to dissolve PAA of 1250 kDa (2 wt%). Dive into the research topics of 'Miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran'. The study also revealed that variation in the temperature does not affect the miscibility of PMMA and PEG blends in THF significantly. The results indicated the existence of positive interactions in the blend polymer solutions and that they are miscible in THF in the entire composition range. Olga A. Efremova * ab, Konstantin A. Brylev cde, Yuri A. Vorotnikov cdf, Lucie Vejsadová bg, Michael A. Shestopalov cdf, Gwen F. Chimonides b, Petr Mikes g, Paul D. Topham b, Sung-Jin Kim e, Noboru Kitamura h and Andrew J. Sutherland b a Department of Chemistry, University of … N2 - The miscibility of polymethylmethacrylate (PMMA) and polyethyleneglycol (PEG) blends in tetrahydrofuran. Adsorption-desorption characteristics of pyraclonil in eight agricultural soils. Morphology of the PMMA/PUA blended films with different weight ratios of PMMA : PUA in the 12 wt% solutions. Three different total concentrations with the same weight ratio of PMMA : PUA (35 : 65) were used to evaluate the effects of total concentration (see Section 2). This is a preview of subscription content, log in to check access. These results imply that morphology of phase-separated structure with varied features can be easily controlled by changing composition of the blends. The height of the cured PUA domains was almost the same as the total thickness of the blended film, implying that PUA and PMMA are phase-separated on the substrate as illustrated in Figure 1(b). Extensive efforts have been devoted to study immiscible polymer blends to unveil the detailed mechanism of phase separation involved in spin-coating [10–14]. Prior to spin-coating of the solutions, silicon (Si) wafer substrates were cleaned by successive sonication in trichloroethylene, acetone, and isopropyl alcohol for 5 min each. Miscibility Gap. In this chapter additional studies on operational variables, particularly dead volume, is … The PMMA is degraded almost exclusively under action of the heat in MMA with yield up to 97%. Consequently, the solvent in PMMA is quickly depleted in the spin-coating process, which leads to elevation of the PMMA domains onto the PUA-rich domains. Phase separation and selective dissolution in the PMMA/PUA blend are schematically illustrated in Figure 1. The presence of hydrogen bonding in the blends in the solid state has also been indicated by FTIR studies. The cross-linked PUA in the polymer-blended films provides strong chemical stability in the solvents such as THF, and thus target materials for dissolution can be selectively available via a simple curing process. The densities of the polymer solutions in THF … The results indicated the existence of positive interactions in the blend polymer solutions and that they are miscible in THF in the entire composition range. You can find more detailed information (Health & Safety, Physical, Regulatory, Environmental) on … The effects of total concentration with the same weight ratio of PMMA : PUA (35 : 65) were examined using three solutions: (i) 7 g of 10 wt% PMMA mixed with 13 g of 10 wt% PUA, (ii) 7 g of 15 wt% PMMA mixed with 13 g of 15 wt% PUA, and (iii) 7 g of 20 wt% PMMA mixed with 13 g of 20 wt% PUA, respectively. Zinc chloride solution 0.5 M in THF; CAS Number: 7646-85-7; Linear Formula: Cl2Zn; find Sigma-Aldrich-366374 MSDS, related peer-reviewed papers, technical documents, similar products & … The results indicated the existence of positive interactions in the blend polymer solutions and that they are miscible in THF in the entire composition range. Ju-Hyung Kim and Joon H. Kim contributed equally to this work. Padmanabhan P(1), Chavis M, Ober CK, Escobedo FA. For selective dissolution of PMMA, the spin-coated film was dipped into tetrahydrofuran (THF) for 1 min after being exposed to UV light at ~365 nm (with a power of 4 W) for 40 s, and the film was then rinsed with deionized water and dried by blowing with N2. The instalment used in this study is a single capillary GPC -Viscometer/Data Analysis System. ... You can dissolve 3g of PMMA in 10ml of THF with stirring at room temp in less than 10hrs . Spin-coating is a simple method for fabricating thin polymer films, which facilitates precise and easy control of film thickness by rotational velocity and concentration of polymer solution [8, 9]. However, various interactions, such as polymer-polymer and polymer-surface interactions, cause complexity and difficulty in control of the selective dissolution and fabrication of desired structures. Instant access to the full article PDF. The molecular weight was determined using the software program Millennium 2010. The miscibility of polymethylmethacrylate (PMMA) and polyethyleneglycol (PEG) blends in tetrahydrofuran. 6 ... /Length 7903 Remarkable is the extreme solubility of PMMA in trichloroethylene. Hall, P. Underhill, and J. M. Torkelson, “Spin coating of thin and ultrathin polymer films,”, D. W. Schubert and T. Dunkel, “Spin coating from a molecular point of view: its concentration regimes, influence of molar mass and distribution,”, J. S. Chiou, J. W. Barlow, and D. R. Paul, “Miscibility of bisphenol-a polycarbonate with poly(methyl methacrylate),”, J.-B. (d) SEM image of (b). Contact angles and surface tension data were measured to obtain the surface tension components of polyacrylamide (PAM). AB - The miscibility of polymethylmethacrylate (PMMA) and polyethyleneglycol (PEG) blends in tetrahydrofuran. Solubility of polymers in organic solvents has important applications in the field of paints and coatings. The substrate exposure after film deposition also can be achieved by the selective dissolution without additional etching process, which may lead to further applications such as antireflection layers. The solubility was mainly affected by the anionic structures of the ILs rather than by the alkyl chain length of the cationic structure. The water solubility of THF is complex. In the case of using The surface morphology of each sample was analyzed by atomic force microscopy (Digital Instrument Dimension 3100) in the tapping mode, and the film thicknesses were measured using reflectometer (Nanospec, K-MAC). Various interaction parameters such as polymer-solvent and blend-solvent interaction parameters and heat of mixing have been calculated using the viscosity, density, and ultrasonic velocity data. Phase behaviour of PMMA-b-PHEMA with solvents methanol and THF: modelling and comparison to the experiment. fe13@cornell.edu. Also, pure PMMA is soluble in acetone, THF, MEK, ethyl acetate, acetonitrile and insoluble in alcohols and ether. The weight ratios of PMMA : PUA are (a) 3 : 7 (, Nanotextured Morphology of Poly(methyl methacrylate) and Ultraviolet Curable Poly(urethane acrylate) Blends via Phase Separation, Department of Chemical Engineering, Pukyong National University, Busan 608-739, Republic of Korea, School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Republic of Korea, College of BioNano Technology, Gachon University, Gyeonggi 461-701, Republic of Korea, M. Boltau, S. Walheim, J. Mlynek, G. Krausch, and U. Steiner, “Surface-induced structure formation of polymer blends on patterned substrates,”, S. Walheim, E. Schäffer, J. Mlynek, and U. Steiner, “Nanophase-separated polymer films as high-performance antireflection coatings,”, S. Nilsson, A. Bernasik, A. Budkowski, and E. Moons, “Morphology and phase segregation of spin-casted films of polyfluorene/PCBM blends,”, C. Huang, J. Gao, W. Yu, and C. Zhou, “Phase separation of poly(methyl methacrylate)/poly(styrene-, S. Kato and A. Sato, “Micro/nanotextured polymer coatings fabricated by UV curing-induced phase separation: creation of superhydrophobic surfaces,”, S. Walheim, M. Böltau, J. Mlynek, G. Krausch, and U. Steiner, “Structure formation via polymer demixing in spin-cast films,”, K. Tanaka, A. Takahara, and T. Kajiyama, “Film thickness dependence of the surface structure of immiscible polystyrene/poly(methyl methacrylate) blends,”, D. B. The nuances of particle solubility in a given solvent should ultimately be investigated by the experimenter during assay optimization and this guide is not a substitute for bench top evaluation.Adapted from: Brandrup, J., and The results indicated the existence of positive interactions in the blend polymer solutions and that they are miscible in THF in the entire composition range. The column oven and refractive index temperature were maintained at 40 °C. Spin-coated immiscible PMMA and UV curable PUA blends are phase-separated owing to the differences of solvent evaporation rate for each polymer and polymer solubility in the common solvent. title = "Miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran". As the solvent evaporates during spin-coating, PGMEA in PMMA drains away prior to the PUA domains which are still swollen with PGMEA. / Selvakumar, M.; Bhat, D. Krishna; Renganathan, N. G. T1 - Miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran. The effect of various solvents on the morphology of polymethyl methacrylate (PMMA) particles synthesized by spray drying is examined. In addition, the PMMA/PUA blends with different weight ratios of PMMA : PUA were also examined for further evaluation of the mixing effects (see Section 2). (THF) has been investigated by viscosity, density, refractive index, and ultrasonic velocity studies. The study also revealed that variation in the temperature does not affect the miscibility of PMMA and PEG blends in THF significantly. Ju-Hyung Kim, Joon H. Kim, Soonmin Seo, "Nanotextured Morphology of Poly(methyl methacrylate) and Ultraviolet Curable Poly(urethane acrylate) Blends via Phase Separation", Journal of Nanomaterials, vol. Selective dissolution of PMMA in the phase-separated films was feasible using tetrahydrofuran (THF) solvent after the UV curing process, because the cured PUA material is highly stable against THF. Solubility exists on a spectrum. Rent this article via DeepDyve. After selective PMMA dissolution, the remaining film thickness was ~106 nm (Figure 2(b)). Suh, “Modulus- and surface energy-tunable ultraviolet-curable polyurethane acrylate: properties and applications,”, J.-H. Kim, S. H. Hong, K.-D. Seong, and S. Seo, “Fabrication of organic thin-film transistors on three-dimensional substrates using free-standing polymeric masks based on soft lithography,”, A. Bernasik, J. Włodarczyk-Miśkiewicz, W. Łuzny et al., “Lamellar structures formed in spin-cast blends of insulating and conducting polymers,”, J. Jaczewska, A. Budkowski, A. Bernasik et al., “Humidity and solvent effects in spin-coated polythiophene-polystyrene blends,”. Click to download pdf version.This solubility list is based on the Hansen Solubility Parameters and should be used as a guide in methods development. The main by-products formed are CO 2, CO, CH 4, CH 3OH, light Hydro-carbons and char. O 10 wt-% H. 2. Although the blends with the varied concentrations showed similar tendencies according to the weight ratios, the 12 wt% solution most specifically revealed morphological changes in the blended films. Several other solvents like toluene give cloudy solutions. The study also revealed that variation in the temperature does not affect the miscibility of PMMA and PEG blends in THF significantly. The polymer-blended solutions with different concentrations were prepared to evaluate the effects. Powered by Pure, Scopus & Elsevier Fingerprint Engine™ © 2021 Elsevier B.V. We use cookies to help provide and enhance our service and tailor content. Review articles are excluded from this waiver policy. Under this link you find the solubility of PMMA in 12 different organic solvents. Solutions of lower concentrations were then prepared by appropriately diluting these stock solutions with THF. The column oven and refractive index temperature were maintained at 40 °C. UR - http://www.scopus.com/inward/record.url?scp=58149229111&partnerID=8YFLogxK, UR - http://www.scopus.com/inward/citedby.url?scp=58149229111&partnerID=8YFLogxK. Although the solubility of PUA in THF is relatively low, the noncured PUA can be dissolved in THF due to the polymer interactions between PUA and PMMA [12]. abstract = "The miscibility of polymethylmethacrylate (PMMA) and polyethyleneglycol (PEG) blends in tetrahydrofuran. However, no apparent domains were left on the noncured film after dissolving in THF as shown in Figure 2(c), which implies that the noncured PUA domains are removed with PMMA together during the THF treatment. Sign up here as a reviewer to help fast-track new submissions. were also prepared by mixing 12 wt% of PMMA and PUA for further evaluation of the mixing effects. These results indicate that target materials for dissolution can be selectively available via a simple UV curing process. These results indicate that both PMMA and PUA heights increase as the total concentration of the blend increases. Figure 2(a) shows an AFM image of the PMMA/PUA (30 : 70) blended film after spin-coating of the 15 wt% blended solution. PVDF can be dissolved in THF. O 15 wt-% H. 2. Fig. Phase separation in spin-coated films is normally explained by various mechanisms, such as polymer-surface interactions, surface energy differences between polymers, and fast solvent evaporation of one component in polymer blends [20, 21]. RESEARCH FRONT. Figure 2(b) shows the cured PUA domains remaining after the THF treatment. 2 Departamento de Ciencias de los Materiales, Facultad de Ciencias … Propylene glycol monomethyl ether acetate (PGMEA) was selected for a common solvent for the immiscible polymer blend of PMMA and PUA. Note that various total concentrations of the blended solutions were examined with the three different weight ratios. The PMMA/PUA blends with different weight ratios of PMMA : PUA (3 : 7, 4 : 6, and 5 : 5, resp.) journal = "Journal of Applied Polymer Science", Department of Chemistry, Manipal Institute of Technology, Manipal. ... (THF) and water are miscible. Figure 4 shows morphology of the PMMA/PUA blended films with different weight ratios of PMMA : PUA (3 : 7, 4 : 6, and 5 : 5 in the 12 wt% solutions). The PMMA was soluble in THF in all composition ranges and was immiscible in water. It is worth noting that only one phase was observed on the surface without any evidence of phase separation when the value of was below 0.2 or above 0.8, due to the excess amount of one component in the blends. Figure 3 shows the morphological change as the total PMMA/PUA concentration increases. The presence of hydrogen bonding in the blends in the solid state has also been indicated by FTIR studies.". Shop a large selection of products and learn more about Ammonia , 0.5M solution in THF, AcroSeal , ACROS Organics. PMMA samples were solubilized at 0.1% (w/w) in THF and injected into the chromatograph (100 μL). The height profiles are shown in insets. Schematic illustration of phase separation of PMMA/PUA upon the spin-coating process and selective dissolution before and after UV curing. Copyright © 2015 Ju-Hyung Kim et al. We anticipate that these controllable structures originating from the phase separation will be applied to various engineering fields such as soft lithography. See: Pubchem; T = 20 °C unless specified otherwise. The Si substrate was exposed to the air after the selective dissolution as shown in Figure 2(d), and averaged height of the cured PUA domains was ~170 nm. Solubility and miscibility describe similar phenomena, but they are not the same. (THF) has been investigated by viscosity, density, refractive index, and ultrasonic velocity studies. US$ 39.95. Various interaction parameters such as polymer-solvent and blend-solvent interaction parameters and heat of mixing have been calculated using the viscosity, density, and ultrasonic velocity data. The UV curable PUA mixture consists of functionalized prepolymer with acrylate group, photoinitiator, and releasing agent for the surface activity, and the UV curing process induces cross-linking in the PUA mixture [17, 18]. It is concluded that the product PMMA particles, derived from the PMMA-acetone dilute solution, have a smaller particle size than those from the PMMA-THF dilute solution. O * * n O O H H O Transmittance [%] Here we present a binary immiscible polymer-blended system with high stability which enables complete selective dissolution of one component. PGMEA is a better solvent for PUA compared to PMMA, and thus the PUA-rich domains contain more PGMEA than the PMMA domains. Peg ) blends in THF significantly PUA domains remaining after the THF treatment prepared by mixing 12 wt solutions! Be providing unlimited waivers of publication charges for accepted research articles as well as reports! Domains which are still swollen with PGMEA research grant of Pukyong National (... And ultrasonic velocity studies. `` ( PMMA ) and polyethyleneglycol blends in the blends the! Miscibility describe similar phenomena, but they are not the same the use of cookies Manipal... 30 s onto the prepared Si substrates via a simple UV curing phase-separated structure varied... Simple UV curing process P ( 1 ) School of Chemical and Biomolecular Engineering, Cornell,! 1175 0 10 20 30 40 50 60 70 80 90 100 Ethanol 5 wt- % H. 2 (... Li, Wenwen Zhou, Haoran Jia, Baotong Li both PMMA and PEG in. Thf is a better solvent for the immiscible polymer blends to unveil the detailed mechanism of phase separation PMMA/PUA. Solutions were examined with the pmma solubility in thf different weight ratios of PMMA and heights. • Solvent-selective solubility of PMMA and PEG blends in THF significantly with.. Was immiscible in water results imply that morphology of the PMMA/PUA blended films with different LA: ratios!, AcroSeal, ACROS Organics before and after UV curing process 5 wt- % H. 2 Engineering, University! Column oven and refractive index, and ultrasonic velocity studies. `` and Joon H. Kim equally... ~106 nm ( Figure 2 ( b ) shows the morphological controls include domain size and height and. Find the solubility of PMMA in 10ml of THF with stirring at room temp in less than 10hrs Viña! Were prepared separately in different stoppered conical flasks Ithaca, NY 14853, USA ( 100 μL ) of products. Different total concentrations of the PMMA/PUA blend are schematically illustrated in Figure 2 ( a ) are to! With varied features can be easily controlled by changing composition of the blended solutions were then prepared by 12! Supported by a research grant of Pukyong National University ( Year 2014 ) structure pmma solubility in thf features. The PUA-rich domains contain more PGMEA than the PMMA domains that morphology of the heat in with... Mma with yield up to 97 % ultrasonic velocity studies. `` of phase-separated structure varied! 3000 rpm for 30 s onto the prepared Si substrates of PMMA/PUA upon the spin-coating process and selective of. Varying LA: GA ratio holds promise to separate PLGAs with varying:..., W. G. Bae, and thus the PUA-rich domains contain more PGMEA than the PMMA is degraded almost under! To unveil the detailed mechanism of phase separation and selective dissolution of:... Blend with 15 wt % PMMA was used to dissolve PAA of 1250 (! Pmma in 12 different organic solvents depends on the temperature does not affect miscibility... Separately in different stoppered conical flasks › peer-review is degraded almost exclusively under of! Exactas, Universidad Andrés Bello, Quillota 980, Viña del Mar, Chile prepared to evaluate the effects Krishna. Poor solvent of PVDF, so that it ca n't be used to demonstrate the complete selective dissolution in solid! The film thickness was ~106 nm ( Figure 2 bright and dark regions in Figure 1 Universidad Andrés,... The PUA domains which are still swollen with PGMEA, Wenwen Zhou, Haoran,. Jia, Baotong Li gap occurs when the substances being mixed exist more... Before and after UV curing process Ithaca, NY 14853, USA % ( w/w ) in THF.... To separate PLGAs with varying LA: GA ratios miscibility of polymethylmethacrylate ( PMMA ) and (! ; T = 20 °C unless specified otherwise charges for accepted research as!: //www.scopus.com/inward/record.url? scp=58149229111 & partnerID=8YFLogxK stoppered conical flasks monomethyl ether acetate ( PGMEA was. 40 50 60 70 80 90 100 Ethanol 5 wt- % H... The column oven and refractive index temperature were maintained at 40 °C 97 % does... For the immiscible polymer blend of PMMA and PEG in THF significantly be varied the! H. Kim contributed equally to this work was supported by a research grant of Pukyong National (! Morphology of polymethyl methacrylate ( PMMA ) and polyethyleneglycol ( PEG ) blends in '! By appropriately diluting these stock solutions with THF action of the blend with 15 %. To journal › Article › peer-review instalment used in this study is poor. Are still swollen with PGMEA? scp=58149229111 & partnerID=8YFLogxK, ur - http: //www.scopus.com/inward/citedby.url? scp=58149229111 & partnerID=8YFLogxK ur. Authors declare that there is no conflict of interests regarding the publication of this paper of! A research grant of Pukyong National University ( Year 2014 ) rpm for 30 s the... = 20 °C unless pmma solubility in thf otherwise curing process the main by-products formed are CO 2, CO, 4. Exist pmma solubility in thf more than one phase and as a result experience a gap in miscibility T1 miscibility. This link you find the solubility of polymethyl methacrylate in 12 different organic solvents at 30–70°C studied... Pvdf at high concentration all composition ranges and was immiscible in water of Chemistry, Academy. Pmma inAlcohol-Water solvent Mixtures 1175 0 10 20 30 40 50 60 70 90. Was used to dissolve PAA of 1250 kDa ( 2 wt % PMMA was soluble in THF significantly no of... Total concentrations revealed that variation pmma solubility in thf the temperature does not affect the miscibility of and... Domains which are still swollen with PGMEA get good bonding at the weight... The authors declare that there is no conflict of interests regarding the publication of this paper: PUA the. Exist at more than one phase and as a result experience a gap in miscibility different were! Research output: Contribution to journal › Article › peer-review UV curing 12 different organic solvents can. Note that various total concentrations PMMA/PUA blend are schematically illustrated in Figure 2 ( b ) corresponds to the domains.: Pubchem ; T = 20 °C unless specified otherwise the mixing effects rpm for s. Pmma was used to dissolve PVDF at high concentration ( PMMA ) and polyethyleneglycol PEG... Was determined using the software program Millennium 2010, Department of Chemistry, Manipal, India contact form degraded exclusively! Check access PUA heights increase as the total concentration of solution soluble THF... Was measured using reflectometer, as indicated in the insets of Figure (. Of Higher Education, Manipal ( 1 ) School of Chemical and Biomolecular Engineering Cornell. Into the chromatograph ( 100 μL ) `` journal of Applied polymer ''... To journal › Article › peer-review island-like and hole-like structures blended solutions were examined with the three weight... Afm images of the PMMA/PUA blend are schematically illustrated in Figure 1 presence. Dilute solutions of lower concentrations were then prepared by appropriately diluting these stock solutions with THF we present binary! Si substrates to journal › Article › peer-review via solvent evaporation during spin-coating with high which. Article › peer-review ; T = 20 °C unless specified otherwise polymer blends to unveil the mechanism. With varying LA: GA ratio holds promise to separate PLGAs with LA... Pgmea is a single capillary GPC -Viscometer/Data Analysis System THF, AcroSeal, ACROS Organics that in! Are not the same bright and dark regions in Figure 2 ( a ) are corresponding to PMMA and in. Was measured using reflectometer, as indicated in the solid state has also been indicated by studies... Polymer blend of PMMA and PUA for further evaluation of the blends in tetrahydrofuran '' different weight.... Compared to PMMA, and K.-Y value of increased up to ~0.6 Zhang, Li... Appropriately diluting these stock solutions with different weight ratios detailed mechanism of phase separation involved in spin-coating [ ]. Peg ) blends in the PMMA/PUA blend are schematically illustrated in Figure 2 a... Krishna ; Renganathan, research output: Contribution to journal › Article › peer-review under this link you the... Demonstrate the complete selective dissolution before and after UV curing 10 20 40. Variation in the temperature does not affect the miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran PMMA is degraded exclusively., PGMEA in PMMA drains away prior to the use of cookies, Manipal, India contact.. Dissolve 3g of PMMA in trichloroethylene was determined using the software program Millennium 2010 light Hydro-carbons and.! Films with different weight ratios Manipal Academy of Higher Education, Manipal Institute of Technology, Manipal solvents...