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Effect of degradative treatments on cotton graft copolymers. Part V. Behavior of poly(acrylamide)‐cotton graft copolymers toward acid treatments
Author(s) -
Hebeish A.,
El Rafie M. H.,
Khalil E. M.,
AbdelHafiz S. A.
Publication year - 1986
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.1986.070310610
Subject(s) - copolymer , polymer chemistry , acrylamide , hydrolysis , cellulose , polyacrylamide , chemistry , ultimate tensile strength , acrylic acid , hydrogen peroxide , ferrous , materials science , nuclear chemistry , polymer , organic chemistry , composite material
Polyacrylamide (Aam)‐cotton graft copolymers having 9, 14.5, and 20% graft were synthesized using ferrous cellulose thiocarbonate‐hydrogen peroxide redox system. These copolymers as well as ungrafted and initiator‐treated cottons were subjected to acid treatments (0.5 N HCl) at 40°, 60°, and 80°C for 15‐90 minutes. Hydrolytic susceptibility of the five substrates was assessed by monitoring carboxylic groups, copper, number, nitrogen content (in case of the copolymers), and tensile strength. Results obtained concluded that the copolymers exhibit higher resistance to acid hydrolysis than the ungrafted and initiator‐treated cottons. This was explained in terms of involvement of the CONH 2 groups of the graft in an interaction with HCl.