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Surface‐modified kevlar fiber‐reinforced polyethylene and ionomer
Author(s) -
Takayanagi Motowo,
Kajiyama Tisato,
Katayose Teruo
Publication year - 1982
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.1982.070271024
Subject(s) - materials science , ionomer , composite material , fiber , composite number , polyethylene , polymer chemistry , synthetic fiber , surface modification , polymer , chemical engineering , copolymer , engineering
The surface of poly( p ‐phenylene terephthalamide) (PPTA) fiber was modified by the polymer reaction via the metalation reaction in demethyl sulfoxide to provide the fiber surface with several functional groups such as the n ‐octadecyl group, carboxymethyl group, and acrylonitrile. The discontinuous fibers thus modified could be isotropically dispersed in polyethylene and ionomer. The composite of ionomer and random‐in‐plane oriented discontinuous PPTA fibers with the surface modified by carboxymethyl groups was remarkably improved in its mechanical properties, and the fiber efficiency factors of about 0.4 for both strength and modulus are comparable to the values in the composite of unidirectionally oriented discontinuous PPTA fibers and ionomer. The heat resistance of ionomer was also greatly improved by the presence of this surface modified PPTA fibers, even with volume fractions as low as 2.2%.