Poly casting solvent

In order to test the tissue compatibility of tyrosine-derived poly-(iminocarbonates), solvent cast films of poIy(CTTH) were subcutaneously implanted into the back of outbread mice. In this study, conventional poly(L-tyrosine) served as a control (42). With only small variations, the experimental protocol described for the biocompatibility testing of poly(N-palmitoylhydroxyproline ester) (Sec. III. 

Poly(CTTH) (Figs. 6 and 7) was also used as a model compound for the preliminary evaluation of the in vitro degradability of tyro-sine-derived poly(iminocarbonates) Solvent cast films of poly(CTTH)... 

Funaki, Y, Kumano, K., Nakao, X, Jinnai, H., Yoshida, H., Kimishima, K., Xsutsumi, K., Hirokawa, Y. and Hashimoto, X. (1999) Influence of casting solvents on microphase-separated structures of poly(2-vinylpyridine)-fcJocfe-polyisoprene. Polymer, 40, 7147-7156. 

Kim, J., Kim, B., Jung, B., Kang, Y. S., Ha, H. Y, Oh, I. H. and Ihn, K. J. 2002. Effect of casting solvent on morphology and physical properties of partially sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene copolymers. Macromolecular Rapid Communication 23 753-756. 

This dependence of block polymer property on casting solvent also is seen in poly(styrene-b-diene) polymers (28). Theoretical work (23) has shown that the thermodynamically most stable morphology for a diblock polymer containing 50% of each component is a lamella morphology. For this reason MEK was chosen for the tests on all other polymers. 

Poly styrene-butadiene-styrene (Casting solvent Methyl Ethyl ketone) 2.020 2.87 19 Mw= 124000... 

Wijdenes and Geomini (170) examined the effects of the phenolic resin composition, its molecular weight distribution, solvent composition, and prebake temperature on the interfacial layer formation. They found that combined use of poly(p-vinylphenol) (structure 3.10) as matrix resin and cyclohexanone as the casting solvent in the diazoquinone resist formulation minimizes mixing of the two layers and yields a capped PCM structure without any plasma treatment. 

PS/poly(a-methyl styrene) Toluene, Cyclohexane, Propylene glycol Regions of miscibility and immiscibility as functions of a casting solvent and molecular weight for both components were established based on T s consideration. DSC [Saeki et al., 1983]... 

The importance of the choice of casting solvent on membrane properties is also evident in studies of proton conductivity of sulfonated poly-styrene-foZock-(ethylene-co-butylene)-fc/ock-sulfonated polystyrene (SSEBS) (Scheme 2c) membranes prepared from different compositions of mixed casting solvents (MeOH/THF) (Fig. 25). For example, the conductivity of SSEBS membranes possessing a degree of sulfonation (DS) of 27 mol % increases with an increasing fraction of methanol in the solvent mixture. For membranes with a DS of 42 mol %, the proton conductivity increases with concentration of methanol fraction and levels off at higher volume fraction. 

Poly(methyl methacrylate) (PMMA) is the standard positive e-beam resist, usually purchased in two high molecular weight forms (495 or 950 kg moP ) in a casting solvent such as chlorobenzene or anisole. For example 950 kg mol PMMA, 4 % in anisole is a commonly used solution. Electron beam exposure breaks the polymer into fragments (as shown in Scheme 13.7) that can be dissolved in a 1 1 MIBK IPA developer (where MIBK is methyl isobutyl ketone and IPA is isopropyl alcohol). 

Poly(vinyl alcohol) (PVA) membranes containing silver salts were prepared by severd methods and found to be effective for the separation of benzene and cyclohexane using hydrated liquid feed and sweep streams. Benzene/cyclohexane selectivides exceeded 30 and benzene permeabilities exceeded 1 pm kg m-2 hrl. Removal of the casting solvent by fieeze-drying results in a membrane with a uniform distribution of silver. Despite the large selectivities observed in transport experiments, benzene and cyclohexane absorb equally well into die membranes and exhibit similar diffusion coefficients. 

G. P. Robertson, S. D. Mikhailenko, K. Wang, P. Xing, M. D. Guiver, S. Kaliaguine, Casting solvent interactions with sulfonated poly(ether ether ketone) during proton exchange membrane fabrication. J. Membr. ScL 219, 113-121 (2003). 

Casting solvent interactions with sulfonated poly(ether ether ketone) during proton exchange membrane fabrication. Journal of Membrane Science, 219, 113 121. 

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