| Three polymer-solvent gel systems--atactic polystyrene/carbon disulfide, poly(2,6-dimethyl 1,4-phenylene oxide)/orthochlorostyrene, and poly(N-vinylpyrrolidone)-phenoxy resin/water were investigated using small angle neutron, xray, and light scattering, wide angle xray diffraction, capillary viscometry, nuclear magnetic resonance, and dynamic mechanical testing techniques. Aspects of the microstructure of these gels were revealed.;The PPO/OCLS system was studied with xray diffraction on a slowly cooled 30% polymer sample at ;Poly(N-vinylpyrrolidone)/Phenoxy resin/water gels prepared at room temperature were investigated. Small angle x-ray scattering indicates that an irreversible structure change occurs at 75;In the Polystyrene/CS... |
