| 共聚酯PEIT-PEG结晶性能的研究 |
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| 引用本文： | 李鑫,刘润涛,顾利霞.共聚酯PEIT-PEG结晶性能的研究[J].功能高分子学报,2003,16(2):219-224. |
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| 作者姓名： | 李鑫 刘润涛 顾利霞 |
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| 作者单位： | 东华大学纤维改性国家重点实验室,上海,200051 |
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| 摘 要： | 通过偏光显微镜、广角X衍射与FTIR三种测试手段对共聚酯PEIT-PEG的结晶性能进行了系统的研究，重点分析了间苯二甲酸(IPA)、聚乙二醇(PEG)分子量和含量对共聚酯结晶性的影响。研究表明，PEIT与PEG之间发生了共聚反应，IPA的引入使PET结晶性能下降，晶粒尺寸减少，结晶度降低。引入PEG后，当PEG分子量和含量较低时，共聚酯结晶性能提高；当PEG含量较高时，在PEG分子量不变的情况下，随着PEG含量的增加，结晶性能下降；若PEG重量含量相同，PEG分子量越高，结晶性能越好。
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| 关 键 词： | 共聚酯 PEIT－PEG 结晶性能 结晶结构 聚对苯二甲酸乙二醇酯 聚乙二醇 改性纤维 |
| 文章编号： | 1008-9357(2003)02-0219-06 |
| 修稿时间： | 2002年6月27日 |
Study on the Crystalline Properties of Poly(ethylene terephthalate-co-isophthalate) -Poly ( ethylene glycol) ( PEIT-PEG) Copolyester |
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| LI Xin,LIU Run-tao,GU Li-xia.Study on the Crystalline Properties of Poly(ethylene terephthalate-co-isophthalate) -Poly ( ethylene glycol) ( PEIT-PEG) Copolyester[J].Journal of Functional Polymers,2003,16(2):219-224. |
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| Authors: | LI Xin LIU Run-tao GU Li-xia |
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| Abstract: | The crystalline properties of PEIT-PEG copolymers is studied by PLM, Wide-angle X-ray and FTIR. The effect of IPA. the molecular weight and content of PEG on the crystalline properties is discussed in detail. The results show that copolymerization happened between PEIT and PEG. Adding IPA decreases the crystalline properties, crystal size and crystallinity of copolymers. Adding PEG improves the crystalline properties of copolymers when the molecular weight and content of PEG are both low. At high content of PEG, if the molecular weight of PEG is invariable, the cry-atalline properties decreases with increasing the content of PEG and if the weight fraction of PEG is invariable, the crystalline properties increases with increasing the molecular weight of PEG . |
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| Keywords: | PEIT-PKG copolymer cryatalline structure crystalline property |
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