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Radiation‐initiated inverse emulsion polymerization of vinylpyrrolidone
Author(s) -
Taylor M. B.,
Gilbert R. D.,
Stannett V. T.,
Williams J. L.
Publication year - 1994
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.1994.070531013
Subject(s) - polyvinylpyrrolidone , emulsion polymerization , dispersity , polymer chemistry , polymer , polymerization , emulsion , molar mass distribution , n vinylpyrrolidone , chain transfer , materials science , chemical engineering , particle size , polymer science , chemistry , copolymer , radical polymerization , organic chemistry , composite material , engineering
The radiation‐induced inverse emulsion polyerization of vinylpyrrolidone using an isoparaffinic hydrocarbon and nonionic emulsifier blend is described. High molecular weight polyvinylpyrrolidone (PVP) (1 million to 2 million M v ) was readily obtained at rapid polmerization rates ( Rp ∼ 10–35 mol 1 −1 s −1 ) to high conversions (90–95%). The polydispersity of the polymer varied from 2.6 to 4.4, suggesting that chain transfer to the polymer had occurred. Adding a polymeric surfactant to the nonionic blend modified the polymerization rate and particle‐size distribution. © 1994 John Wiley & Sons, Inc.