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On the rheological behavior of latex polystyrene blends
Author(s) -
Nemirovski N.,
Narkis M.
Publication year - 1994
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760340908
Subject(s) - x ray photoelectron spectroscopy , polystyrene , materials science , divinylbenzene , styrene , polymerization , chemical engineering , microstructure , monomer , rheology , polymer chemistry , copolymer , polymer , composite material , engineering
The synthesis of latex two‐phased polystyrene blends has been accomplished by three different mixing routes: (1) PS‐b‐XPS system consisting of a physical blend of polystyrene (PS) and crosslinked polystyrene (XPS) lattices, the latter being lightly crosslinked with divinylbenzene (less than 1% DVB), (2) (XPS‐s)‐PS system obtained by styrene polymerization in presence of a XPS seed latex, and (3) (PS‐s)‐XPS system, in which styrene and DVB are copolymerized in presence of a PS seed latex. Structuring of these PS/XPS systems resulted in different microstructures by each of the procedures. Different rheological behaviors have been noticed, along with a rather interesting property dependence on XPS content and DVB concentration. The polymerization method appears to be critical to the development of well‐characterized, tailor‐made latex microstructures, insofar as the order of monomers addition determines much of the polymerizations sites.