| 洗滤-萃取法去除原子转移自由基聚合法制备PMMA-b-PLLA-b-PMMA嵌段聚合物中的Cu离子 |
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| 引用本文： | 仲玉,沈珺,魏荣卿,刘晓宁. 洗滤-萃取法去除原子转移自由基聚合法制备PMMA-b-PLLA-b-PMMA嵌段聚合物中的Cu离子[J]. 应用化学, 2011, 28(3). DOI: 10.3724/SP.J.1095.2011.00151 |
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| 作者姓名： | 仲玉 沈珺 魏荣卿 刘晓宁 |
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| 作者单位： | 南京工业大学生物与制药工程学院,南京,210009 |
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| 基金项目： | 国家高技术研究发展计划(“863”计划)(2007AA02Z200,2007AA06A402)资助项目 |
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| 摘 要： | 采用洗滤-萃取法去除原子转移自由基聚合法(ATRP)制备的聚甲基丙烯酸甲酯-聚L-乳酸-聚甲基丙烯酸甲酯(PMMA-b-PLLA-b-PMMA)嵌段共聚物中残留金属Cu离子。结果表明,采用二氯甲烷(DCM)溶解共聚物,用水或酸水洗滤-萃取,当重复洗滤-萃取5次后,Cu离子的去除率能达到99%,所得嵌段共聚物的收率高于80%。与过Al2O3层析柱或溶剂溶解-沉淀方法相比,洗滤-萃取法操作简单、可节省大量的有机溶剂,具有工业化前景。
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| 关 键 词： | 原子转移自由基聚合 聚甲基丙烯酸甲酯-聚L-乳酸-聚甲基丙烯酸甲酯 Cu离子的去除 洗滤-萃取法 |
Removal of Cu-ion in Block Copolymer of PMMA-b-PLLA-b-PMMA Prepared via Atom Transfer Radical Polymerization by Washing-extraction Method |
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| ZHONG Yu,SHEN Jun,WEI Rongqing,LIU Xiaoning. Removal of Cu-ion in Block Copolymer of PMMA-b-PLLA-b-PMMA Prepared via Atom Transfer Radical Polymerization by Washing-extraction Method[J]. Chinese Journal of Applied Chemistry, 2011, 28(3). DOI: 10.3724/SP.J.1095.2011.00151 |
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| Authors: | ZHONG Yu SHEN Jun WEI Rongqing LIU Xiaoning |
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| Affiliation: | ZHONG Yu,SHEN Jun,WEI Rongqing,LIU Xiaoning (College of Biotechnology and Pharmaceutical Engineering,Nanjing University of Technology,Nanjing 210009) |
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| Abstract: | This paper developed a washing-extraction method to remove the residual Cu-ion from the triblock copolymer of poly(methyl methacrylate)-b-poly(L-lactic acid)-b-poly(methyl methacrylate)(PMMA-b-PLLA-b-PMMA) prepared via atom transfer radical polymerization(ATRP).The result is that,when taking dichloromethane(DCM) as the solvent and water or acid as the extractant,the rate of removing Cu-ion can reach as much as 99% and the yield of the block copolymerization was more than 80% followed by washing and extracti... |
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| Keywords: | ATRP PMMA-b-PLLA-b-PMMA removal of Cu ion washing-extraction method |
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