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Morphology Evolution during the Phase Separation of Polyetherimide/Epoxy Blends
Author(s) -
Gan Wenjun,
Yu Yingfeng,
Wang Minghai,
Tao Qingsheng,
Li Shanjun
Publication year - 2003
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200300017
Subject(s) - polyetherimide , epoxy , materials science , relaxation (psychology) , phase (matter) , morphology (biology) , scattering , activation energy , polymer chemistry , analytical chemistry (journal) , composite material , polymer , chemistry , optics , organic chemistry , physics , biology , genetics , psychology , social psychology
The results of time‐resolved light scattering for the phase separation of epoxy/polyetherimide/anhydride blends show that the evolution of scattering vector q m follows a Maxwell‐type relaxation equation. The relaxation time may be suggested as the time taken for the diffusion of the epoxy‐anhydride n ‐mers from the PEI‐rich phase by their relaxation movement, and the apparent activation energy of the relaxation movement is obtained.Values of q m versus time at different temperatures.