Multiphase Polymer Systems Research Articles

Analysis of transient sorption and permeation of small molecules in multiphase polymer systems

AbstractThe transport of small molecules (gases) in incompatible polymer blends, semi‐crystalline polymers, and filled polymer systems is usually examined in terms of transient sorption and permeation experiments which yield effective values of diffusivity and permeability. From a modeling standpoint these complex systems can be regarded as composites with complex morphology whereas the gas can be considered as a molecular probe of the morphology and especially its connectedness. In this paper we present a brief review of transport descriptions in prototype ordered and disordered systems with special emphasis on simulation of transient measurements. The simulations presented are selected in such a way as to aid in the interpretation of experimental results obtained by sorption and permeation and in the construction and evaluation of morphologies with desired effective transport properties.

Viscoelasticity and Molecular Reinforcement of Multiphase Polymeric Systems

Viscoelasticity and Molecular Reinforcement of Multiphase Polymeric Systems

Studies on melt spinning. VII. Elongational viscosity and fiber morphology of multiphase polymer systems

AbstractMelt spinning experiments were carried out to investigate the elongational behavior and fiber morphology of multiphase polymer systems. Materials chosen for study were blends of calcium carbonate‐filled polypropylene with general‐purpose polystyrene and blends of calcium carbonate‐filled polypropylene with high‐impact polystyrene. The former is a three‐phase system in which the CaCO3 particles are dispersed, and the latter is a four‐phase system in which CaCO3 particles are dispersed, together with rubbery butadiene particles. Note that polypropylene is incompatible with the matrix of high‐impact polystyrene. The experimental technique described in part I of this series was used to determine the elongational viscosity. With the four‐phase system, the apparent elongational viscosity tends to increase as the stretch ratio is increased above a certain critical value which appears to be ca. 25. This transition does not occur with the three‐phase system and is attributable to elongation of the suspended rubber particles. The addition of small amounts of HIPS to PP‐CaCO3 increases spinnability in general, whereas larger amounts decrease spinnability.

Structure and properties of block polymers and multiphase polymer systems: an overview of present status and future potential

Work on the block polymers of styrene and butadiene indicates the potential of multiphase polymers of controlled solid state structure. The effect of chemical composition, molecular architecture (multichain ‘star’ shaped versus linear), block sequence length, processing conditions, and blending of homopolymer with the block polymers on their solid state morphology is discussed. Results on these block polymer systems indicate the future research directions in certain areas. Implications of these areas for polymers of controlled solid state structure to provide materials of desirable combination of properties are also considered.

Rheological properties and microstructure of multiphase polymeric systems

Rheological properties and microstructure of multiphase polymeric systems

Multiple polymeric oil‐in‐oil emulsions and dispersions: A novel approach to multiphase polymer systems of controlled morphology

Journal of Polymer Science Part A-1: Polymer ChemistryVolume 10, Issue 6 p. 1867-1876 Note Multiple polymeric oil-in-oil emulsions and dispersions: A novel approach to multiphase polymer systems of controlled morphology P. G. Patel, P. G. Patel Sterling Moulding Materials Limited, Castle Mill, Stalybridge, Cheshire, EnglandSearch for more papers by this authorT. O. Craig, T. O. Craig Sterling Moulding Materials Limited, Castle Mill, Stalybridge, Cheshire, EnglandSearch for more papers by this author P. G. Patel, P. G. Patel Sterling Moulding Materials Limited, Castle Mill, Stalybridge, Cheshire, EnglandSearch for more papers by this authorT. O. Craig, T. O. Craig Sterling Moulding Materials Limited, Castle Mill, Stalybridge, Cheshire, EnglandSearch for more papers by this author First published: June 1972 https://doi.org/10.1002/pol.1972.150100625Citations: 3AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume10, Issue6June 1972Pages 1867-1876 RelatedInformation