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Preparation and catalytic application of poly 4‐vinylpyridine microspheres
Author(s) -
Cao LiJing,
Wang Ge,
Shi Lin,
Yang Mu,
Sun DongBai
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31197
Subject(s) - catalysis , monomer , microsphere , polymer chemistry , ionic strength , emulsion polymerization , hydrogen peroxide , chemical engineering , copolymer , materials science , emulsion , polymerization , cyclooctene , chemistry , polymer , organic chemistry , composite material , aqueous solution , engineering
Poly 4‐vinylpyridine (P4VP) microspheres between 170 and 728 nm were synthesized by Emulsifier‐Free Emulsion Polymerization. The monomer concentration, ionic strength, and initiator concentration affected the microsphere size and size distribution. The increasing monomer concentration led to the increase of microsphere size, whereas the size distribution of the resultant P4VP microspheres increased with the increasing ionic strength of the reaction systems. Mo(O 2 ) 2 O·2DMF was successfully anchored onto the P4VP microspheres by ligand exchange, and the heterogeneous catalyst showed high‐catalytic activity for epoxidation of cis ‐cyclooctene with environmentally friendly hydrogen peroxide. The size and morphology of the supported microspheres has important influence on the catalytic activity. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010