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Multiphase Polymer Dispersions and Nanocomposites by Catalytic/Free Radical Emulsion Polymerization
Author(s) -
Kolb Ludmila,
Thomann Ralf,
Mecking Stefan
Publication year - 2004
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200400346
Subject(s) - emulsion polymerization , materials science , polymer chemistry , polymerization , radical polymerization , acrylate , butyl acrylate , polyethylene , emulsion , chemical engineering , polymer , copolymer , composite material , engineering
Summary: Free radical emulsion polymerization of styrene (S) or butyl acrylate (BA) in the presence of latices of linear polyethylene (PE) prepared by catalytic emulsion polymerization affords colloidally stable multiphase latices. Coagulation of a PE/PS latex affords nanocomposites composed of small PE phases dispersed in a PS matrix, as evidenced by the large supercoolings of PE crystallization (by DSC). TEM of PE/PBA latices indicates a PBA phase around the PE particles under the emulsion polymerization conditions investigated. Films formed from these dispersions exhibit homogeneously dispersed PE particles.Multiphase latices are obtained by free radical emulsion polymerization of butyl acrylate in the presence of latices of linear polyethylene (PE) prepared by catalytic emulsion polymerization.