| 聚乙烯醇-g-聚乳酸接枝共聚物的合成与表征 |
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| 引用本文： | 郭锡坤,范燕平. 聚乙烯醇-g-聚乳酸接枝共聚物的合成与表征[J]. 汕头大学学报(自然科学版), 2006, 21(2): 17-23 |
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| 作者姓名： | 郭锡坤 范燕平 |
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| 作者单位： | 汕头大学理学院,广东,汕头,515063 |
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| 摘 要： | 提出“三步法”制备刷状聚乙烯醇-g-聚乳酸接枝共聚物(PVA-g-PLLA),合成出一系列PVA-g-PLLA.借助FTIR,1H-NMR等方法对其结构进行表征,并考察其热行为与平均接枝数的关系.实验结果表明,制得的PVA-g-PLLA的Tg和晶区熔融峰随着平均接枝数量的减少而相应降低.因此,利用“三步法”可以改变平均接枝数,从而有效调控PVA-g-PLLA的热行为.
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| 关 键 词： | 聚乳酸 聚乙烯醇 刷状聚乙烯醇-g-聚乳酸接枝共聚物 |
| 文章编号： | 1001-4217（2006）02-0017-07 |
| 收稿时间： | 2005-11-03 |
| 修稿时间： | 2005-11-03 |
Synthesis and Characterize of PVA-G-PLLA Brush-Like Graft Copolymer |
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| GUO Xi-kun,FAN Yan-ping. Synthesis and Characterize of PVA-G-PLLA Brush-Like Graft Copolymer[J]. Journal of Shantou University(Natural Science Edition), 2006, 21(2): 17-23 |
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| Authors: | GUO Xi-kun FAN Yan-ping |
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| Affiliation: | College of Science. Shantou University. Shantou 515063. Guangdong. China |
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| Abstract: | A new method called"three-step method"has been put up for preparing brush-like poly(vinyl alcohol)-g-poly(L-lactide) graft copolymers(PVA-g-PLLA).The structures of all the PVA-g-PLLA were characterized by means of FTIR,1H-NMR etc.The relationship of the thermal behavior of the PVA-g-PLLA with average grafting number was further investigated.The results show that the melting peak temperature of crystal zone of the acquired PVA-g-PLLA decreases with the reduction of average grafting number.Therefore,the thermal behavior of PVA-g-PLLA could be effectively adjusted through changing average grafting number which was able to be realized by"three-step method". |
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| Keywords: | poly(L-lactide) poly(vinyl alcohol) brush-like poly(vinyl alcohol)-g-poly(L-lactide) |
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