Infrared spectroscopy studies of cyclic anhydrides as intermediates for ester crosslinking of cotton cellulose by polycarboxylic acids. IV. In situ free radical copolymerization of maleic acid and itaconic acid on cotton

摘要: Polycarboxylic acids have been used as crosslinking agents for cotton fabrics and paper to replace the traditional formaldehyde-based reagents. Previously, we found that a polycarboxylic acid esterifies cellulose through formation of five-membered cyclic anhydride intermediate. Both maleic (MA) itaconic (ITA) are extremely difficult polymerize under conditions normally free radical polymerization. It has reported in literature treatment fabric with mixture MA ITA significantly improved wrinkle-resistance fabric. In this research, investigated situ copolymerization on Fourier transform-infrared spectroscopy was study carbonyl formed treated mixtures ITA. A redox titration technique also applied determine quantity alkene double bonds does not occur at elevated temperatures when potassium persulfate is present an initiator. occur, however, both sodium hypophosphite The probably initiated by reduction–oxidation system. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 327–336,