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Grafting of formaldehyde‐crosslinked and cyanoethylated cotton cellulose with acrylate monomers
Author(s) -
Varma D. S.,
Narasimhan Veena
Publication year - 1975
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.1975.070190103
Subject(s) - formaldehyde , grafting , monomer , methyl methacrylate , cellulose , polymer chemistry , acrylate , methyl acrylate , chemistry , swelling , ethyl acrylate , nuclear chemistry , materials science , organic chemistry , polymer , composite material
Formaldehyde‐crosslinked cotton and cyanoethylated cotton were grafted with methyl, ethyl, and n ‐butyl acrylates and methyl methacrylate using ceric ion as initiator. It was observed that the graft yields for formaldehyde‐crosslinked cotton were significantly higher than those for native cotton. An increase in the bound formaldehyde resulted initially in a decrease in molecular weight of grafts; but later on, an increase was observed. In the case of cyanoethylated cottons, increasing the degree of substitution resulted in increase in graft yields. Molecular weights of the grafts increase up to a D.S. of 0.3, after which they decrease. These results are interpreted in terms of rates of initiation and termination being influenced by production of additional sites due to swelling of cellulose fibers.