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6613498 
Journal Article 
GRAFTING OF MALEIC-ANHYDRIDE COPOLYMERS ONTO CELLULOSE-ACETATE AND METHYL CELLULOSE 
Lee, MK; Biermann, CJ; , 
1992 
1 
Journal of Wood Chemistry and Technology
ISSN: 0277-3813 
MARCEL DEKKER INC 
NEW YORK 
12 
2 
231-240 
WOS:A1992HT68200007 
A high level of control over grafting reactions onto cellulose derivatives was achieved by an acyl transfer reaction mechanism. Ethylene/maleic anhydride copolymer (EMA) and styrene/maleic anhydride copolymer (SMA) were grafted onto cellulose acetate (CA) and methyl cellulose (MC) in a simple and effective way under homogeneous reaction conditions. While pyridine, a commonly used catalyst for the reaction of an anhydride with an alcohol to form an ester, gave an inconveniently long reaction time, N-methylimidazole (NMID) and 4-(N,N-dimethylamino) pyridine (DMAP) were found to increase greatly the rate of esterification.