| 羧甲基魔芋葡甘聚糖的制备及应用 |
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| 引用本文： | 牛春梅,吴文辉,王著,方翠,王建全.羧甲基魔芋葡甘聚糖的制备及应用[J].精细化工,2006,23(8):806-808,821. |
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| 作者姓名： | 牛春梅 吴文辉 王著 方翠 王建全 |
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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;河北科技大学,图书馆,河北,石家庄,050018 |
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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： | 以异丙醇为分散剂,在碱性介质中一氯乙酸(MCA)和魔芋葡甘聚糖(KGM)反应制备了系列羧甲基魔芋葡甘聚糖(CMKGM)。研究了反应时间、反应温度、MCA和NaOH用量等因素对取代度及反应率的影响,优化反应条件为:n(KGM)∶n(MCA)∶n(NaOH)=1∶1∶2,反应温度为50℃,反应时间为4 h,反应率可达90%;将制得的CMKGM用环氧氯丙烷交联,并将其用于吸附水溶液中的Pb2+。结果表明,交联羧甲基魔芋葡甘聚糖能有效吸附水中的Pb2+,当取代度(DS)为0.568,Pb2+起始质量浓度为300 mg/L时,吸附容量为29.19 mg/g,去除率仍高达97.3%。
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| 关 键 词： | 羧甲基魔芋葡甘聚糖 重金属离子 吸附 |
| 文章编号： | 1003-5214（2006）08-0806-04 |
| 收稿时间： | 2005-11-29 |
| 修稿时间： | 2005-11-292006-03-21 |
Preparation and Application of Carboxymethyl Konjac Glucomannan |
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| NIU Chun-mei,WU Wen-hui,WANG Zhu,FANG Cui,WANG Jian-quan.Preparation and Application of Carboxymethyl Konjac Glucomannan[J].Fine Chemicals,2006,23(8):806-808,821. |
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| Authors: | NIU Chun-mei WU Wen-hui WANG Zhu FANG Cui WANG Jian-quan |
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| Affiliation: | 1. School of Material Science and Engineering, Bering Institute of Technology, Beijing 100081, China; 2. School of Material Science and Engineering , Hebei University of Science and Technology, Shijiazhuang 050018 , Hebei , China; 3. Library ,Hebei University of Science and Technology, Shijiazhuang 050018, Hebei , China |
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| Abstract: | Under alkaline conditions,carboxymethyl konjac glucomannan(CMKGM) with different degree of substitution(DS) was prepared through reaction of monochloroacetic acid(MCA) and konjac glucomannan(KGM) using isopropyl alcohol as dispersing agent.The optimum reaction conditions are:n(KGM)∶n(MCA)∶n(NaOH)=1∶1∶2,reaction temperature 50 ℃ and reaction time 4 h.Yield of CMKGM is 90%.Then CMKGM was crosslinked with epichlorohydrin and the prepared products were used to adsorb Pb~2+ from water solution.The results show that crosslinked carboxymethyl konjac glucomannan can effectively adsorb Pb~2+.When DS is 0.568 and original concentration of Pb~2+ is 300 mg/L,the adsorption capacity is 29.19 mg/g and the removed percentage is 97.3%. |
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| Keywords: | carboxymethyl konjac glucomannan heavy metal ions adsorption |
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