| 铈离子引发壳聚糖与MMA接枝共聚的研究 |
| |
| 引用本文： | 杜秀英,张维邦.铈离子引发壳聚糖与MMA接枝共聚的研究[J].高分子材料科学与工程,1996,12(2):28-32. |
| |
| 作者姓名： | 杜秀英 张维邦 |
| |
| 作者单位： | 中山大学材料科学研究所 |
| |
| 摘 要： | 在乙酸水溶液中，以铈盐为氧化还原引发剂，在氮气存在下，壳聚糖与ＭＭＡ可发生接枝共聚反应。接枝百分比及均聚物百分含量依赖于反应温度、时间和引发剂的浓度，但不依赖于单体的浓度。表观活化能为７４．４ｋＪ／ｍｏｌ。接枝物不溶于壳聚糖的溶剂，在丙酮中发生溶胀现象。
|
| 关 键 词： | 铈离子 壳聚糖 接枝共聚 聚丙烯酸甲酯 引发剂 |
CERIC ION-INTIIATED GRAFTING OF POGY (METHYL METHACRYLATE) ONTO CHITOSAN |
| |
| Du Xiuying,Zhang Webang,Zhen Hanmin,Xu Jiarei.CERIC ION-INTIIATED GRAFTING OF POGY (METHYL METHACRYLATE) ONTO CHITOSAN[J].Polymer Materials Science & Engineering,1996,12(2):28-32. |
| |
| Authors: | Du Xiuying Zhang Webang Zhen Hanmin Xu Jiarei |
| |
| Abstract: | Poly(methyl methacrylate)was grafted onto chitosan in an acetic acid solution by using the ceric iun as a redox initiator in the presece of 1.0 mol/L sufric acid and nitrogen, The grafting percentage and percentage of homopolymer turned out to be dependent on reactiun temporature,time,and initiator concentration,but were found to be independant of monomer concentration, The apparent activation energy for the grafting reaction was estimated to be 74.4 kJ/mol. The grafted chitosan is insoluble in solvents for chitosan,but shows enhanced swelling in some organic solvents. |
| |
| Keywords: | s: ceric ion chitosan graft of copolymerization |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
