| Synthesis of high molecular weight polylactic acid from aqueous lactic acid co-catalyzed by tin（Ⅱ）chloride dihydrate and succinic anhydride |
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| 作者姓名： | LEI Ziqiang BAI Yanbin WANG Shoufeng |
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| 作者单位： | Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China |
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| 摘 要： | Polylactic acid was synthesized from commercial available cheap aqueous lactic acid （85%-90% w/w） using succinic anhydride and SnCl2·2H2O as catalyst in the absence of organic solvents. As a result, polylactic acid with a molecular weight of 60000 was prepared in 10 h. The new procedure is much simple, cheap and outstanding in that the start material is aqueous lactic acid; the catalytic system is environmentally benign.
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| 关 键 词： | 聚合物 催化剂 有机溶剂 分子结构 乳酸 |
| 收稿时间： | 2005-07-28 |
| 修稿时间： | 2005-07-282005-08-26 |
Synthesis of high molecular weight polylactic acid from aqueous lactic acid co-catalyzed by tin(II)chloride dihydrate and succinic anhydride |
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| LEI Ziqiang BAI Yanbin WANG Shoufeng.Synthesis of high molecular weight polylactic acid from aqueous lactic acid co-catalyzed by tin(II)chloride dihydrate and succinic anhydride[J].Chinese Science Bulletin,2005,50(20):2390-2392. |
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| Authors: | Email author" target="_blank">Ziqiang?LeiEmail author Yanbin?Bai Shoufeng?Wang |
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| Institution: | LEI Ziqiang, BAI Yanbin & WANG Shoufeng Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China |
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| Abstract: | Polylactic acid was synthesized from commercial available cheap aqueous lactic acid (85%–90% w/w) using succinic anhydride
and SnCl2.2H2O as catalyst in the absence of organic solvents. As a result, polylactic acid with a molecular weight of 60000 was prepared
in 10 h. The new procedure is much simple, cheap and outstanding in that the start material is aqueous lactic acid; the catalytic
system is environmentally benign. |
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| Keywords: | polylactic acid bulk polymerization catalytic polymerization |
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