After selective PMMA dissolution, the remaining film thickness was ~106 nm (Figure 2(b)). As illustrated in Figure 1, the cross-linked PUA domains remain even after dissolving the blended film in THF, whereas the PMMA domains are completely dissolved in THF. 100mL; AcroSeal glass bottle packed in tin can. 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. Choi, P. J. Yoo, S. J. Baek, T. W. Kim, and H. H. Lee, “An ultraviolet-curable mold for Sub-100-nm lithography,”, S.-J. 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. 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. Author information: (1)School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA. 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. AB - The miscibility of polymethylmethacrylate (PMMA) and polyethyleneglycol (PEG) blends in tetrahydrofuran. Solvent parameters, including Lewis basicity, solubility parameters, and a hydrophobicity parameter, were used to discuss the change in the PMMA solubility … M. Selvakumar, D. Krishna Bhat, N. G. Renganathan, Research output: Contribution to journal › Article › peer-review. N2 - The miscibility of polymethylmethacrylate (PMMA) and polyethyleneglycol (PEG) blends in tetrahydrofuran. Shop a large selection of products and learn more about Ammonia , 0.5M solution in THF, AcroSeal , ACROS Organics. These results strongly suggest great potential for various applications in the field of soft lithography, such as antireflection layers, polymer membranes, artificial superhydrophobic surfaces, and nanopatterned structures. The height profiles are shown in insets. Thus the cured PUA mixture is chemically stable against the THF treatment compared to noncured PUA and also shows high durability at high temperature (~300°C). PMMA samples were solubilized at 0.1% (w/w) in THF and injected into the chromatograph (100 μL). The hole diameter decreased to ~100 nm as the value of increased up to ~0.6. 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). Here we present a binary immiscible polymer-blended system with high stability which enables complete selective dissolution of one component. The blend with 15 wt% PUA and 15 wt% PMMA was used to demonstrate the complete selective dissolution of PMMA. 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. ... (THF) and water are miscible. 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 Review articles are excluded from this waiver policy. 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 … Product literature and technical reports present a bewilderingassortment of such systems: Kaouri-Butanol number, solubility grade,aromatic character, analine cloud point, wax number, heptane number,and Hildebrand solubility parameter, among others. Dive into the research topics of 'Miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran'. ... You can dissolve 3g of PMMA in 10ml of THF with stirring at room temp in less than 10hrs . 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 … The bright region in Figure 2(b) corresponds to the PUA domains dispersed on the substrate after spin-coating. Copyright © 2015 Ju-Hyung Kim et al. Lhoest, P. Bertrand, L. T. Weng, and J.-L. Dewez, “Combined time-of-flight secondary ion mass spectrometry and X-ray photoelectron spectroscopy study of the surface segregation of poly(methyl methacrylate) (PMMA) in bisphenol A polycarbonate/PMMA blends,”, M. C. Davies, K. M. Shakesheff, A. G. Shard et al., “Surface analysis of biodegradable polymer blends of poly(sebacic anhydride) and poly(dl-lactic acid),”, P. Wang and J. T. Koberstein, “Morphology of immiscible polymer blend thin films prepared by spin-coating,”, T. Kikuchi, M. Kudo, C. Jing, T. Tsukada, and M. Hozawa, “Electrohydrodynamic effect on phase separation morphology in polymer blend films,”, M. Ibn-Elhaj and M. Schadt, “Optical polymer thin films with isotropic and anisotropic nano-corrugated surface topologies,”, J. Kim, M. Inoue, L. Zhao et al., “Tunable and flexible solvent-free liquid organic distributed feedback lasers,”, S.-J. 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]. Figure 3 shows the morphological change as the total PMMA/PUA concentration increases. The study also revealed that variation in the temperature does not affect the miscibility of PMMA and PEG blends in THF significantly. 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. O 15 wt-% H. 2. 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]. Yue Zhang, Wei Li, Wenwen Zhou, Haoran Jia, Baotong Li. Padmanabhan P(1), Chavis M, Ober CK, Escobedo FA. 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. / Selvakumar, M.; Bhat, D. Krishna; Renganathan, N. G. T1 - Miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran. Under this link you find the solubility of PMMA in 12 different organic solvents. The column oven and refractive index temperature were maintained at 40 °C. The miscibility of polymethylmethacrylate (PMMA) and polyethyleneglycol (PEG) blends in tetrahydrofuran. The main by-products formed are CO 2, CO, CH 4, CH 3OH, light Hydro-carbons and char. Solubility of polymethyl methacrylate in 12 organic solvents at 30–70°C was studied. Rent this article via DeepDyve. Note that the UV curing process was performed in the argon purged glove box, because oxygen plays a role as an inhibitor to photoinitiators. 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