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Thermal behavior of graft copolymers of cotton cellulose and acrylate monomers
Author(s) -
Varma D. S.,
Narasimhan Veena
Publication year - 1972
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.1972.070161222
Subject(s) - monomer , grafting , polymer chemistry , acrylate , methyl acrylate , materials science , ethyl acrylate , methyl methacrylate , thermal stability , cellulose , copolymer , methacrylate , thermogravimetry , butyl acrylate , natural fiber , chemical engineering , chemistry , composite material , organic chemistry , polymer , composite number , engineering
Cotton cellulose yarn was grafted with methyl acrylate, ethyl acrylate, n ‐butyl acrylate, and methyl methacrylate at various percentages of grafting. The effects of concentration of the initiator, concentration of the acid, and of temperature on grafting was studied and the mechanism discussed. The effect of reactivity of the monomer on the percentage graft‐on is pointed out. Thermal behavior of natural and grafted cotton yarn was studied using dynamic thermogravimetry in air at a heating rate of 6°C/min up to a temperature of 500°C. The thermal stabilities of the samples grafted with various acrylate monomers to various percentages of grafting were computed from their primary thermograms by calculating the values of IDT , IPDT , and E * . The results show that the thermal stability increases with increase in graft‐on per cent, and the thermal stabilities of natural cotton and cotton grafted with different monomers are in the order ethyl > methyl > natural cellulose > methyl methacrylate > n ‐butyl acrylate.