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The effect of synthesis methods on the mechanical properties of self‐crosslinkable poly( n ‐butyl methacrylate‐ co ‐ N ‐methylolacrylamide) films
Author(s) -
Aguilar J.,
Mendizábal E.,
NuñoDonlucas S. M.,
Arellano M.,
Puig J. E.,
Rabelero M.
Publication year - 2011
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.33737
Subject(s) - materials science , emulsion polymerization , microemulsion , polymer chemistry , emulsion , curing (chemistry) , polymerization , methacrylate , swelling , methyl methacrylate , polymer , particle size , composite material , chemical engineering , pulmonary surfactant , engineering
The effects of particle size and parent polymer characteristics on the mechanical properties, gel fraction, and swelling index of self‐crosslinkable poly( n ‐butyl methacrylate‐co‐ N ‐methylolacrylamide) films made by two‐stage emulsion or microemulsion polymerization in the presence of variable amounts of the chain transfer agent, n ‐butyl mercaptan, are reported here. In films prepared with latexes made by microemulsion polymerization, the crosslinking degree increased greatly on curing; by contrast, in those made by emulsion polymerization, the crosslinking degree practically did not increase after curing. Stress–strain tests of uncured and cured films indicate that microemulsion‐made films are tougher than the emulsion‐made films. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011