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Peculiarities of phase and supermolecular structure of graft copolymers of polycaproamide with poly(methacrylic acid)
Author(s) -
Rŭbtsov A. E.,
Matv̆eev V. V.,
Chălykh A. E.,
Smirnova N. V.,
Gabrielyan G. A.,
Gal'Braikh L. S.
Publication year - 1991
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.1991.070430410
Subject(s) - copolymer , materials science , methacrylic acid , polymer chemistry , monomer , polymer , polymerization , grafting , phase (matter) , penetration (warfare) , chemical engineering , diffusion , graft polymer , composite material , chemistry , organic chemistry , physics , operations research , engineering , thermodynamics
The structure of graft copolymers of PCA with PMAA obtained by the methods of chemically initiated liquid‐phase grafting polymerization has been investigated with the use of electron microscopy, electron‐probe microanalysis, and X‐ray radiography. The concentration profiles of the graft copolymer distribution along the fiber cross section and diffusion coefficients of the monomer solutions correlated with the kinetics of the graft layer penetration inside the polymeric matrix have been determined. The concentration profile of the graft polymer distribution has been shown to have drops down to the zero level. Grafting proceeds both in the amorphous regions and on the surface of imperfect crystals. The structure of the graft layer, in which the segregated chains of graft PMAA constitutes the dispersed medium and the PCA inclusions represent the dispersed phase, has been found to be heterogeneous.