Citation:
YOU Tian-Biao, TAN Ying, TANG Qing, HU Ai-Xi. Preparation and Characterization of Cellulose Diacetate Polyethylene Glycol Graft Copolymer[J]. Chinese Journal of Applied Chemistry,
;2006, 23(3): 346-348.
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Cellulose diacetate(CDA) was grafted with polyethylene glycol(PEG) by using 1,6-hexamethylene diisocyanate(HDI).The effects of molecular weight of PEG,the ratio of PEG to CDA,HDI amount,catalyst amount and reaction time on the grafting reaction were studied.The optimal condition were determined by means of orthogonal experiments,that is,n(NCO):n(OH) was 4:4;m(PEG):m(CDA) was 5.0:3.0;the mass fraction of catalyst was 0.10%,reaction time was 1.5 h and molecular weight of PEG was 200.The graft rate of CDA-g-PEG prepared under the optimal conditions was 253.3%.The graft copolymer was characterized by means of FT-IR,1H NMR,and 13C NMR techniques.
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