Premium
A rheological study of latex polystyrene‐based model systems
Author(s) -
Nemirovski Naum,
Narkis Moshe
Publication year - 1993
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19930760134
Subject(s) - x ray photoelectron spectroscopy , polystyrene , rheology , materials science , chemical engineering , microstructure , polymer chemistry , polymer , composite material , engineering
Latex two‐phased polystyrene blends have been produced by three different mixing routes. Polystyrene (PS) and lightly crosslinked polystyrene (XPS) latices were either mixed, or else used as seeds in two‐stage polymerizations. This resulted in different microstructures by each of the procedures, leading to different rheological behaviors. Latex PS/XPS systems flow at every composition studied. Activation energies are independent of XPS content, and of the same order of magnitude as PS. Power‐law relaxation has been observed for the physically blended system in the terminal region. This has been attributed to the formation of a “continuous” XPS network in the range 60–100% XPS.