PREPARATION AND CHARACTERIZATION OF POLY ( METHYL METHACRYLATE ) ( PMMA ) AND POLY ( VINYL CHLORIDE ) ( PVC ) ALLOYS
Alloys of Poly (Methyl methacrylate) (PMMA) and Poly (vinyl Chloride) (PVC) were prepared by solvent casting techniques. Physiochemical characteristics of the products were studied. It was found that at certain relative concentration, some of these properties were enhanced, while in some, degraded relative to the constituent homopolymers. These results were interpreted in terms of the interactions between the components of these blends. By means of FT infra red studies, it was established that functional groups were the major players in interactions. Other modes include dipole-dipole, van der waals and mere physical entanglements.
Polymer Blends and Alloys
Overview. Rheology of two-phase blends. Practical aspects of processing of blends. Compatibilization and reactive blending. Practical techniques for studying blend microstructure. Modelling the properties of polymer blends. Toughened polymers. Blends containing liquid crystal polymers. Fibre forming blends and in situ fibre composites. References. Index.
ASYMPTOTIC PROPERTIES OF SOME CLASSES OF GENERALIZED FUNCTIONS
This paper studies the connection between the asymptotic and quasi-asymptotic properties at infinity of slowly increasing generalized functions with supports on the half-line and the asymptotic and quasi-asymptotic properties of the real parts of their Laplace and Fourier transforms in a neighborhood of the origin. The study is caried out in the scale of regularly varying self-similar functions. The results are applied to the study of the asymptotic properties of solutions of linear passive systems, and also to the study of the connection between Abel and Ces?ro convergence (with respect to a self-similar weight) of the Fourier-Stieltjes series of nonnegative measures. Bibliography: 13 titles.