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Tensile Properties of Self‐Crosslinkable Poly(n‐butyl methacrylate‐ co ‐ N ‐methylolacrylamide) Films Prepared by Emulsion and Microemulsion Latexes
Author(s) -
Aguilar Jacobo,
Rabelero Martín,
Mendizábal Eduardo,
NuñoDonlucas Sergio M.,
Arellano Martín,
Puig Jorge E.
Publication year - 2009
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200950929
Subject(s) - microemulsion , emulsion , emulsion polymerization , materials science , pulmonary surfactant , methacrylate , polymer chemistry , sodium dodecyl sulfate , swelling , polymerization , bromide , ultimate tensile strength , chemical engineering , cationic polymerization , composite material , polymer , chemistry , organic chemistry , engineering
Abstract The gel content, swelling degree and mechanical properties of self‐crosslinkable poly(n‐butyl methacrylate‐co‐N‐methylolacrylamide) films made by two‐stage emulsion (using sodium dodecyl sulfate as surfactant) or microemulsion (using cetyltrimethylammonium bromide as surfactant) polymerization processes in the presence of variable amounts of the chain transfer agent, n‐butyl mercaptan, are reported here. Latexes made by microemulsion polymerization contain much smaller nanoparticles with lower amount of gel than those obtained by the emulsion process. Stress‐strain tests in uncured and cured films indicate that microemulsion‐made films are tougher and exhibit smaller deformations at break.