Morphology and Properties of Segmented Copolymers and Blends

anisotropic phase BAN 44/PVC Blends blend compatibility Blends of ET-38-1/PVC block copolymer carbonyl chain chemical compatible blends composition crystalline crystallization Curves of Series dichroism diisocyanate DSC Curves dynamic mechanical elastomers Elongation Curves ENDOTHERMIC entropy equation exhibit Figure films Flory Flory-Huggins theory free energy glass transition hard domains hard segment content hard segment domains Heating at 20°C/min homopolymer hydrogen bonding Hytrel incompatible increasing interaction parameter interfacial matrix measurements melting method microdomains microphase separation miscibility mixture molecular weight molecules morphological model morphology observed Orientation Function partition function peak positions PEUU PEUU's phase mixing phase separation polyether polymer blends polymer-polymer polymerization polystyrene polyurethanes predicted PTMO PVC blends PVC content random coils relaxation rodlike room temperature rubbery segmented copolymers segmented polyurethanes semicrystalline Series 1 Blends similar soft segment solubility parameter solution solvent spherulitic spinodal Storage Modulus stress-strain structure studied theory thermodynamic urethanes volume fraction