| 不同脱乙酰度壳聚糖接枝丙烯酰胺的合成与表征(英文) |
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| 引用本文： | 程建华,胡勇有,李泗清.不同脱乙酰度壳聚糖接枝丙烯酰胺的合成与表征(英文)[J].广东海洋大学学报,2005,25(6):50-54. |
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| 作者姓名： | 程建华 胡勇有 李泗清 |
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| 作者单位： | 华南理工大学环境科学与工程学院,广东,广州,510641 |
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| 摘 要： | 从甲壳素出发,先制备了3种不同脱乙酰度的壳聚糖,选择过硫酸铵_亚硫酸氢钠为氧化还原体系引发剂,合成了壳聚糖接枝丙烯酰胺聚合物;通过红外光谱,电镜扫描对聚合物进行结构表征,结果表明壳聚糖结构发生了变化,通过在相同条件下比较壳聚糖不同脱乙酰度对接枝率的影响,得出了在脱乙酰度为68.5%时聚合物的接枝率最大为250%,其最佳合成工艺为∶m(壳聚糖)∶m(丙烯酰胺)=1∶5,引发剂用量为体系质量分数的0.3%~0.4%,温度55~60℃,反应时间为2.5~3.0 h。
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| 关 键 词： | 壳聚糖 水处理 接枝 |
| 文章编号： | 1007-7995(2005)06-0050-05 |
| 修稿时间： | 2004年11月23 |
Synthesis and Characterization of Graft Acrylamide onto Different Degree of Deacetylation Value of Chitosan |
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| CHENG Jian-hua,HU Yong-you,LI Si-qing.Synthesis and Characterization of Graft Acrylamide onto Different Degree of Deacetylation Value of Chitosan[J].Journal of Zhanjiang Ocean University,2005,25(6):50-54. |
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| Authors: | CHENG Jian-hua HU Yong-you LI Si-qing |
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| Abstract: | Graft copolymer of chitosan was prepared using acrylamide. The grafting reaction was initiated by ammonium persulfate and sodium sulfite. The graft copolymer was characterized by FT-IR,X-ray and SEM techniques. The grafting percentage was also analysed. The grafting percentage showed maxima with 68.5% D.D.(degree of deacetylation) of chitosan under appropriate condition, around 250% grafting percentage was achieved. The best synthesis condition is m(chitosan):m(AM)=1:5; redox indicator 0.3%-0.4% mass fraction of solution; reaction temperature 55-60 ℃; reaction time 2.5-3.0 h. |
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| Keywords: | chitosan acrylamide grafting |
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