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Gamma Ray Irradiation‐Initiated Copolymerization of a Binary Casting System Involving DPBMI n and Vinylpyrrolidone
Author(s) -
Liu Feng,
Wang Zhen,
Lü Changli,
Gao Lianxun,
Ding Mengxian
Publication year - 2005
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200500042
Subject(s) - copolymer , materials science , casting , irradiation , polymer chemistry , solvent , composite material , oligomer , chemical engineering , polymer , chemistry , organic chemistry , physics , nuclear physics , engineering
Abstract Summary: When initiated by gamma ray irradiation, a series of homogenous binary casting systems composed of bismaleimide oligomer DPBMI n with different chain length and reactive solvent vinylpyrrolidone were capable of copolymerization via radical mechanism to form copolymer resins with crosslinked network. Postcuring was performed by thermal treatment subsequent to gamma ray irradiation. The influences of irradiation dose, postcure, DPBMI n content, and chain length of DPBMI n on mechanical properties, water uptake, and thermal property of copolymer resins were investigated in details. Fracture morphologies of copolymer resins based on different DPBMI n were studied by SEM.SEM images of the copolymer resins.