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Concerted effects of grafting and crosslinking in cotton fabrics
Author(s) -
Negishi Michiharu,
Nakamura Yoshio,
Kakinuma Toshiko
Publication year - 1965
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.1965.070091119
Subject(s) - grafting , formaldehyde , acrylate , thermosetting polymer , materials science , ultimate tensile strength , polymer chemistry , methyl acrylate , elongation , chemistry , composite material , organic chemistry , polymer , copolymer
The formaldehyde crosslinking of the methyl, ethyl, or n ‐butyl acrylate‐grafted cotton fabrics was performed in the dry or semi‐dry systems. It was found that the reaction rates of crosslinking of the grafted cotton were not much retarded, the dry and wet crease recoveries of the grafted cotton, especially with n ‐butyl acrylate, were significantly improved with increasing bound formaldehyde, and the hydrophobicity of the butyl acrylate‐grafted cotton had a tendency to be dissipated by a slight extent of crosslinking. Although the tensile and tear strength, breaking elongation, and thermosetting property of butyl acrylate‐grafted cotton fabrics inevitably decreased with increasing bound formaldehyde, the loss was smaller than that of the ungrafted and formaldehyde‐crosslinked cotton. Water imbibition, and moisture regain increased, and water repellency decreased with increasing bound formaldehyde. Crosslinking in the wet system, improved the wet crease recovery, as in the ungrafted cotton. Furthermore, in the butyl acrylate grafting after partial crosslinking with N ‐methylolacrylamide, the hydrophilic property of crosslinked cotton was almost retained unchanged and the thermosetting property recovered to that of the untreated cotton at about 35% graft‐on.