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On this, the dawning of a new age in high technology, man is seeking answers to increasingly complex problems. We are routinely launching reusable vehicles into space, designing and building computers with seemingly limitless powers, and developing sophisticated communications systems using laser technology, fiber optics, holography, etc., all of which require new and advanced materials. Polymer alloys continue to provide new solutions to the materials problems, and remain an area of ever increasing research. Polymer alloys are mu1ticomponent macromolecular systems. The components may be all on the same chain (as in block co polymers), on side chains (as in graft copolymers), or in different molecules (as in po1yb1ends and interpenetrating polymer networks). The variety of morphologies possible and the synergistic effects on ultimate properties continue to stimulate research on new polymer alloys. More and more studies on synthesis of new alloys, the kinetics and mecha nisms of their formation, and their characterization, are taking place, as well as studies on their processing and applications. This book presents the proceedings of the Symposium on Polymer Alloys, sponsored by the American Chemical Society's Division of OrganiC Coatings and Plastics Chemistry held at the 182nd meeting of the American Chemical Society in New York, in August, 1981. The most recent efforts of scientists and engineers from allover the world in this increasingly important field are presented in the following pages.
Sommario
Model Plastic Rubber Composites from Emulsion Polymers.- On the Correlation of Mechanical Properties of High Impact Polystyrene with its Morphology, Molecular-Weight Characteristics and Extrusion Conditions.- Correlation of Morphology, Mechanical Properties and Processing Conditions of Modified High Impact Polystyrene.- Initiated Styrene Copolymerization with Polybutadiene Reaction Conditions on the Length of Polystyrene Graft Branches.- On the Influence of the Initial Stages of Styrene Copolymerization with Polybutadiene on High Impact Polystyrene Morphology.- Characterization of Polymer Blends, Block Copolymers, and Graft Copolymers by Fractionation Procedures using Demixing Solvents.- A Critical Assessment of the Application of FT-IR Spectroscopy to the Study of Crystalline/Compatible Polymer Blends.- Fracture Toughness of Poly(Methyl Methracrylate) Blends.- Melt Rheology of Blends of Semi-Crystalline Polymers: Part II, Dynamic Properties of Poly(Ethylene Terephtalate) Poly(Amide -6,6) Molten Blends.- Domain Stability During Capillary Flow of Well Dispersed Two Phase Polymer Blends: Polystyrene/Polymethylmethacrylate Blends.- Melt Compounding of PVC with Ethylene Copolymer Resins.- Polymer-Performance on the Dimensional Stability and the Mechanical Properties of Wood-Polymer Composites Prepared by an Electron Beam Accelerator.- Phase Domain Size and Continuity in Sequential IPN s: A Review.- RIM Systems from Interpenetrating Polymer Networks.- Microphase Segregation in Segmented Amine-Cured Polyurethanes.- Synthesis and Properties of Some Copolymers of Maleic Anhydride Derivatives.- Photothermal Degradation of Ethylene/Vinylacetate Copolymer.- Syntheses of Nitrogenous Materials by RF Plasmas.
