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Showing 1 to 5 of 5 for “"solution-cast films"”.
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Polymer Crystallization: Polycarbonate and Polybutene-1
… state was examined using thin ($\sim$1000A), solution cast films and thicker (0.16 and 1.5 mm) compression molded films. A detailed study of the crystallization process in the thin films, as observed by transmission electron microscopy, revealed that spherulites grew by a nucleation and growth …
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Synthesis and characterization of perfectly alternating segmented copolymers comprised of poly(dimethylsiloxane)s and engineering thermoplastics
… polyimides. The copolymers were characterized in solution and the solid state. The -(-A-B-)-n architecture and molecular design of these linear systems afforded thermodynamically microphase separated systems which gave rise to interesting copolymer properties. Each controlled molecular weight …
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Synthesis and characterization of soluble, high temperature aromatic polyimides
… by a non-traditional synthetic route utilizing solution imidization techniques and diester-diacid derivatives of various commercially available dianhydrides. "One pot" syntheses were conducted using a solvent system of N-methylpyrrolidinone and σ-dichlorobenzene at temperatures of 170°C to 180°C …
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Phase behavior and ordering kinetics of block copolymers in solution during solvent removal
… of the ordering kinetics of block copolymers in solution during the extraction of solvent from a solution-cast film. Central to this work was determining a suitable method for measuring the ordering kinetics during solvent removal and being able to interpret the measurements in terms of structure …
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Structure-property relationships of multiphase copolymers
… to texture with lower surface/volume ratios. Casting the copolymers from an NMP solution favored a more discrete morphology than the thermally treated compression molded samples. The modulus was found to increase as the degree of phase separation increased with increasing PDMS segment size at …