| 新型聚乳酸-聚酰亚胺嵌段共聚物的合成与表征 |
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| 引用本文： | 窦庶华,孙姣霞,阮长顺,张晓彦,吴进川,王远亮. 新型聚乳酸-聚酰亚胺嵌段共聚物的合成与表征[J]. 功能材料, 2012, 43(3): 317-319,323 |
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| 作者姓名： | 窦庶华 孙姣霞 阮长顺 张晓彦 吴进川 王远亮 |
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| 作者单位： | 生物流变科学与技术教育部重点实验室,重庆400030 重庆大学生物工程学院生物材料与仿生工程研究中心,重庆400030 |
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| 基金项目： | 国家自然科学基金资助项目，重庆市自然科学基金重点资助项目，重庆市自然科学基金资助项目，重庆市教委资助项目 |
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| 摘 要： | 用氨基封端的PEG-800(ATPEG)与均苯四甲酸酐(PMDA)共聚得到一种新型的氨基封端的可溶性聚酰亚胺(PI)。氨基封端的PI在辛酸亚锡(Sn(Oct)2)的催化作用下引发丙交酯开环共聚,形成聚乳酸-聚酰亚胺(PLA-PI-PLA)嵌段共聚物。采用傅里叶变换红外光谱(FT-IR)、核磁氢谱(1H NMR)、凝胶渗透色谱(GPC)、水接触角等对PI和PLA-PI-PLA进行了表征。FT-IR、1H NMR、GPC的结果表明成功合成了PI及PLA-PI-PLA。水接触角结果显示PLA-PI-PLA相对于聚乳酸亲疏水性明显改善,同时PI主链上的酰亚胺环能在一定的条件下发生开环反应,可提供修饰聚乳酸材料的活性位点。
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| 关 键 词： | 聚乳酸 聚酰亚胺 嵌段共聚 |
Preparation and characterization of a new polylactide-b-polyimide copolymer |
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| DOU Shu-hua,SUN Jiao-xia,RUAN Chang-shun,ZHANG Xiao-yan,WU Jin-chuan,WANG Yuan-liang. Preparation and characterization of a new polylactide-b-polyimide copolymer[J]. Journal of Functional Materials, 2012, 43(3): 317-319,323 |
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| Authors: | DOU Shu-hua SUN Jiao-xia RUAN Chang-shun ZHANG Xiao-yan WU Jin-chuan WANG Yuan-liang |
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| Affiliation: | 1,2(1.Key Laboratory of Biorheological Science and Technology, Ministry of Education,Chongqing 400030,China; 2.Research Center of Bioinspired Material Science and Engineering,Bioengineering College, Chongqing University,Chongqing 400030,China) |
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| Abstract: | A new soluble polyimide was prepared by amino-terminated PEG-800 and pyromellitic dianhydride,then the amino-terminated polyimide induced ring-opening polymerization of lactide with the catalysis of stannous octanoate(Sn(Oct)2) to obtain polylactide-b-polyimide copolymer(PLA-PI-PLA).The structure of the obtained polymers was characterized by infrared spectrum(IR),1H nuclear magnetic resonance spectrum(1H NMR),gel permeation chromatography(GPC) and water contact angle.The results of FT-IR,1H NMR and GPC showed that PI and PLA-PI-PLA were successfully synthesized.Water contact angle showed that PLA-PI-PLA can improve the hydrophilicity of PLA.Meantime,the imide rings of PI could provide reactive sites to further modify the property of PLA. |
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| Keywords: | polylactide polyimide block copolymerization |
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