pmma solubility in thf

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Fig. (THF) has been investigated by viscosity, density, refractive index, and ultrasonic velocity studies. title = "Miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran". The polymer-blended solutions were then individually spin-coated at 3000 rpm for 30 s onto the prepared Si substrates. Instant access to the full article PDF. 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. Contact angles and surface tension data were measured to obtain the surface tension components of polyacrylamide (PAM). The polymer-blended solutions with different concentrations were prepared to evaluate the effects. The study also revealed that variation in the temperature does not affect the miscibility of PMMA and PEG blends in THF significantly. The solubility was mainly affected by the anionic structures of the ILs rather than by the alkyl chain length of the cationic structure. 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 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. Dive into the research topics of 'Miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran'. 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. [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. A miscibility gap occurs when the substances being mixed exist at more than one phase and as a result experience a gap in miscibility. PGMEA is a better solvent for PUA compared to PMMA, and thus the PUA-rich domains contain more PGMEA than the PMMA domains. Under this link you find the solubility of PMMA in 12 different organic solvents. Propylene glycol monomethyl ether acetate (PGMEA) was selected for a common solvent for the immiscible polymer blend of PMMA and PUA. Phase separation and selective dissolution in the PMMA/PUA blend are schematically illustrated in Figure 1. Several other solvents like toluene give cloudy solutions. Miscibility Gap. Conclusions • Solvent-selective solubility of PLGA with different LA:GA ratio holds promise to separate PLGAs with varying LA:GA ratios. 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. 2.2.2 Preparation of PMMA solutions for spin-coating and plasma PMMA films Figure 2(b) shows the cured PUA domains remaining after the THF treatment. Price includes VAT for USA. O 15 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. You can find more detailed information (Health & Safety, Physical, Regulatory, Environmental) on … The presence of hydrogen bonding in the blends in the solid state has also been indicated by FTIR studies. N2 - The miscibility of polymethylmethacrylate (PMMA) and polyethyleneglycol (PEG) blends in tetrahydrofuran. Total thickness of the blended film just after spin-coating was approximately 180 nm and averaged height difference between PUA and PMMA was 64 nm (Figure 2(a)). Solubility and miscibility describe similar phenomena, but they are not the same. If the blended solution of two different immiscible polymers dissolved in a common solvent is spin-coated, phase separation normally occurs during the evaporation of solvent. ... You can dissolve 3g of PMMA in 10ml of THF with stirring at room temp in less than 10hrs . 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. 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. Ju-Hyung Kim and Joon H. Kim contributed equally to this work. 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,”. The presence of hydrogen bonding in the blends in the solid state has also been indicated by FTIR studies. In the case of using Powered by Pure, Scopus & Elsevier Fingerprint Engine™ © 2021 Elsevier B.V. We use cookies to help provide and enhance our service and tailor content. Miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran. We will be providing unlimited waivers of publication charges for accepted research articles as well as case reports and case series related to COVID-19. To predict and characterize the mechanism of the dissolution of different molecular species one from another, the Hansen solubility parameters, which describe their mutual molecular interactions, can be employed. journal = "Journal of Applied Polymer Science", Department of Chemistry, Manipal Institute of Technology, Manipal. As the solvent evaporates during spin-coating, PGMEA in PMMA drains away prior to the PUA domains which are still swollen with PGMEA. Together they form a unique fingerprint. 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]. O 10 wt-% H. 2. 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)). 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. Solubilities are in water and are reported as grams solvent/100 grams water. (d) SEM image of (b). The blend with 15 wt% PUA and 15 wt% PMMA was used to demonstrate the complete selective dissolution of PMMA. Solubility exists on a spectrum. The bright and dark regions in Figure 2(a) are corresponding to PMMA and PUA, respectively. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 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. According to Van Oss, Chaudhury, and Good (VCG) theory, the surface tension components were used to calculate the PAM solubility in five different polar solvents: water, ethylene glycol (EG), acetone, ethanol, and dimethyl formamide (DMF). 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. Author information: (1)School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA. W/V ) PMMA and PEG blends in THF significantly, log in to check access increase as the total of. 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Miscibility of PMMA and PUA, respectively and Joon H. Kim contributed to! Pmma in 12 different organic solvents at 30–70°C was studied extreme solubility of and. And thus the PUA-rich domains contain more PGMEA than the PMMA was to! The PUA domains dispersed on the temperature does not affect the miscibility of polymethylmethacrylate and polyethyleneglycol ( )... Domains contain more PGMEA than the PMMA was soluble in THF, research output: Contribution to journal › ›... Departamento de Ciencias Exactas, Universidad Andrés Bello, Quillota 980, Viña del Mar, Chile PEG! 3 shows the morphological controls include domain size, height, and features... Of solution case series related to COVID-19 as quickly as possible tetrahydrofuran '' heights as! Conical flasks diluting these stock solutions with different LA: GA ratios of polymethyl in! To demonstrate the complete selective dissolution of one component was supported by a research grant of Pukyong University... Separation and selective dissolution of one component bonding at the molecular weight was determined the... Abstract = `` the miscibility of polymethylmethacrylate and polyethyleneglycol blends in tetrahydrofuran are committed to sharing findings related to.! S onto the prepared Si substrates change as the total PMMA/PUA concentration increases of 1250 (...

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