| 乙基纤维素接枝L-丙交酯共聚物的制备、表征及其热性能 |
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| 引用本文： | 王彦斌,苏志锋,赵耀明.乙基纤维素接枝L-丙交酯共聚物的制备、表征及其热性能[J].材料导报,2010,24(2). |
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| 作者姓名： | 王彦斌 苏志锋 赵耀明 |
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| 作者单位： | 华南理工大学材料科学与工程学院,广州,510640;华南理工大学材料科学与工程学院,广州,510640;华南理工大学材料科学与工程学院,广州,510640 |
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| 基金项目： | 高等学校博士学科点专项科研基金，教育部回国人员科研启动基金 |
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| 摘 要： | 在辛酸亚锡催化下,成功制备了乙基纤维素与聚L-乳酸接枝共聚物。产物经GPC、FTIR、1HNMR、13CNMR表征,证实L-丙交酯在乙基纤维素残存的羟基上发生开环聚合,接枝到乙基纤维素骨架上。研究了丙交酯纯度、投料比、催化剂用量、反应时间、反应温度对接枝率的影响,并利用DSC和TG研究了接枝物的热性能。
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| 关 键 词： | 乙基纤维素 L-丙交酯 表征 接枝共聚 接枝率 热性能 |
Preparation,Characterization and Thermal Properties of Ethyl Cellulose Graft L-lactide Copolymer |
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| WANG Yanbin,SU Zhifeng,ZHAO Yaoming.Preparation,Characterization and Thermal Properties of Ethyl Cellulose Graft L-lactide Copolymer[J].Materials Review,2010,24(2). |
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| Authors: | WANG Yanbin SU Zhifeng ZHAO Yaoming |
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| Abstract: | Ethyl cellulose-graft-poly(L-lactic acid)(EC-g-PLLA) graft copolymers are successfully synthesized using Sn(Oct)_2 as an initiator.The copolymers obtained are characterized by means of GPC,FTIR,~1H NMR and ~(13)C NMR.The results show that the PLLA segments are introduced by ring-opening polymerization of L-lactide onto the residual hydroxyl positions on EC.The effects of the purity of L-lactide,feed weight ratio,initiator content,reaction time and reaction temperature on the graft ratio of the copolymer are investigated.The thermal properties of the graft copolymers are studied by DSC and TG. |
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| Keywords: | ethyl cellulose L-lactide characterization graft copolymerization graft ratio thermal properties |
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