Showing papers in "Progress in Polymer Science in 1996"

TL;DR: The neo-classical theory of elastomers as discussed by the authors is a direct extension of the classical theory of conventional rubbers; it describes the very large extensions at which the new transitions occur.

TL;DR: A review of metallocene catalysis and its effects on polymer process engineering for the manufacture of polyolefins is provided in this article, which concentrates on the aspects of polymer reactor engineering, mathematical modelling of polymerization processes, and the characterization of polyoles made with these novel catalysts.

TL;DR: In this article, a review of the kinetics of diffusion of small-molecule penetrants in semi-crystalline polymers is presented, where variations in diffusion impedance resulting from variations in morphology and segmental mobility in the amorphous component are highlighted.

TL;DR: A review of the scientific and patent literature on the synthesis of syndiotactic poly(styrene) is discussed in this article, where the main aspects of the polymerization mechanism are elucidated.

TL;DR: A survey of the literature on X-ray diffraction by mesomorphic side-chain polymers can be found in this paper, where the authors show how the polymorphism of these compounds can be usually determined with simple experimental techniques and how the same techniques can be used to derive more structural information.

TL;DR: The relationship between molecular structure, chain configuration and the viscoelastic behavior of liquid crystal polymers (LCPs) in the nematic state is reviewed in this paper, where three classes of nematic materials are considered: thermotropic side-chain and main-chain LCPs (a) dissolved in nematic solvents and in the bulk state, and (b) lyotropic solutions of rigid-rod and disc-like polymers.

TL;DR: In this article, both polymeric and low molar mass glass-forming chiral nematics are surveyed in terms of chemical structure, thermotropic and optical properties, and the authors highlight outstanding issues that need to be addressed to help advance the development of advanced optical materials.