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Grafting onto wool. XXVIII. Effects of acids on gamma‐radiation induced graft copolymerization of ethylmethacrylate onto wool fiber
Author(s) -
Misra B. N.,
Chauhan G. S.,
Rawat B. R.
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.1991.070421215
Subject(s) - grafting , copolymer , wool , sulfuric acid , monomer , polymer chemistry , hydrochloric acid , chemistry , nitric acid , aqueous solution , nuclear chemistry , perchloric acid , materials science , organic chemistry , polymer , composite material
Graft copolymerization of ethylmethacrylate (EMA) onto Himachali wool fiber has been investigated in aqueous medium by mutual gamma irradiation from a Co 60 source in air and in nitrogen atmosphere. Percentage of grafting has been evaluated as a function of (i) total dose, (ii) concentration of monomer, and (iii) effect of concentration of different acids such as hydrochloric acid, sulfuric acid, nitric acid, perchloric acid, and acetic acid. Maximum percentage of grafting has been obtained in the presence of sulfuric acid. Following reactivity order of different acids towards grafting has been observed: H 2 SO 4 > HCI > HNO 3 > HCIO 4 > CH 3 COOH. A plausible mechanism to explain the effect of acids on percentage of grafting of EMA has been suggested.