| 阳离子魔芋葡甘聚糖的制备与表征 |
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| 引用本文： | 牛春梅,吴文辉,王著,史学峰,曲鹏飞. 阳离子魔芋葡甘聚糖的制备与表征[J]. 精细化工, 2006, 23(2): 188-191 |
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| 作者姓名： | 牛春梅 吴文辉 王著 史学峰 曲鹏飞 |
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| 作者单位： | 北京理工大学,材料科学与工程学院,北京,100081;河北科技大学,材料科学与工程学院,河北,石家庄,050018;北京理工大学,材料科学与工程学院,北京,100081 |
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| 基金项目： | 中国石油化工股份公司资助项目 |
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| 摘 要： | 以3-氯-2-羟丙基三甲基氯化铵(HAT)为阳离子醚化剂,天然魔芋精粉为原料,异丙醇为分散剂制得系列季铵盐阳离子魔芋葡甘聚糖(CKGM)。研究了HAT、催化剂NaOH、反应温度和反应时间对阳离子取代度(DS)的影响,用元素分析仪测定了CKGM的取代度。确定较佳反应条件为:反应温度50℃,反应时间2 h,n(HAT)∶n(魔芋葡甘聚糖)∶n(NaOH)=1.5∶1∶2,DS为0.361,反应率为24.1%,并用FTIR1、HNMR和13CNMR进行了表征。
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| 关 键 词： | 阳离子魔芋葡甘聚糖 魔芋葡甘聚糖 3-氯-2-羟丙基三甲基氯化铵 醚化改性 |
| 文章编号： | 1003-5214（2006）02-0188-04 |
| 收稿时间： | 2005-06-15 |
| 修稿时间： | 2005-06-152005-09-12 |
Preparation and Characterization of Cationic Konjac Glucomannan |
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| NIU Chun-mei,WU Wen-hui,WANG Zhu,SHI Xue-feng,QU Peng-fei. Preparation and Characterization of Cationic Konjac Glucomannan[J]. Fine Chemicals, 2006, 23(2): 188-191 |
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| Authors: | NIU Chun-mei WU Wen-hui WANG Zhu SHI Xue-feng QU Peng-fei |
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| Affiliation: | 1. School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; 2. School of Material Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China |
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| Abstract: | A series of cationic konjac glucomannans(CKGM) were prepared with 3-chloro-2-hydroxypropyltrimethylammonium chloride(HAT) as cationic etherifying agent,natural konjac glucomannan as matrix and isopropyl alcohol as solvent under alkaline conditions.Effects of HAT,NaOH content,reaction temperature and time on degree of substitution(DS) were investigated.DS of CKGM was determined by elementary analysis.The reaction was carried out with n(HAT)∶n(KGM unit)∶n(NaOH)=1.5∶1∶2 at 50 ℃ for 2 h to attain CKGM with DS=0.361 and reaction yield(R) 24.1% yield.The product was characterized by FTIR,~1HNMR and ~(13)CNMR. |
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| Keywords: | cationic konjac glucomannan konjac glucomannan 3-Chloro-2-hydroxypropyltrimethyl-ammonium chloride etherifying modification |
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