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Synthesis and characterization of grafted copolymers of aromatic polyimides and ε‐caprolactam
Author(s) -
Volkova Tat'yana V.,
Vygodskii Yakov S.,
Zabegaeva Olesya N.,
Zubavichus Yan V.,
Il'ina Mari.,
Krasnov Alexander P.,
Afonicheva Ol'ga V.,
Lozinskaya Elena I.,
Garbuzova Irina A.,
Shaplov Alexander S.
Publication year - 2009
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.30543
Subject(s) - caprolactam , materials science , phthalide , copolymer , polyimide , polymer , polymer chemistry , polymerization , condensation polymer , siloxane , fluorene , composite material , chemical engineering , organic chemistry , chemistry , layer (electronics) , engineering
Anionic polymerization of ε‐caprolactam was performed in the presence of only 5 wt % of aromatic polyimides having five‐ and six‐membered imide cycles and bearing hexafluoroisopropylidene, ether, fluorene, siloxane, phthalide, or SO 3 H groups, both in the polymer backbone and as side moieties. The synthesized new copolymers were fully characterized by IR spectroscopy, thermomechanical analysis, dilatometry, and X‐ray diffraction. Tough and frictional properties of the obtained copolymers were estimated as well. It was found that on the selection of polyimide activator it is possible to gain the desirable control over the polymer properties, namely the gel‐fraction content, phase composition, compression modulus, notched Izod impact strength, temperature of frictional contact, friction coefficient, etc. These investigations will facilitate the choice of the optimum macromolecular activator for the modification of both the synthetic method and the properties of the commercial polycaproamide. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009