Graft copolymerization of 2-hydroxyethylmethacrylate onto carboxymethyl chitosan using CAN as an initiator

被引:70
作者
Joshi, JA [1 ]
Sinha, VK [1 ]
机构
[1] VP & RPTP Sci Coll, Dept Ind Chem, Vallabh Vidyanagar 388120, Gujarat, India
关键词
carboxymethyl chitosan; 2-hydroxyethylmethacrylate; ceric ammonium nitrate;
D O I
10.1016/j.polymer.2005.11.050
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
O-Carboxymethyl chitosan (CMCH) was prepared and characterized by FTIR spectroscopy. Graft copolymerization of 2-hydroxyethylmethacrylate (HEMA) onto CMCH using ceric ammonium nitrate (CAN) as an initiator was carried out in an aqueous solution. Evidence of grafting was confirmed by comparison of FTIR spectra of CMCH and the grafted copolymer as well as scanning electron micrograph (SEM) of the products. The effects of concentration of CAN, HEMA, reaction time and temperature on graft copolymerization were studied by determining the grafting percentage, grafting efficiency. With keeping other condition constant, the optimum grafting conditions was obtained as following: CMCH, 2 a; CAN, 0.2 M; and HEMA, 0.384 mol/l; reaction temperature, 40 degrees C; and reaction time, 4.5 h. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2198 / 2204
页数:7
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