高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (5): 801.

• 论文 • 上一篇    下一篇

聚对苯二甲酸乙二醇酯/聚乙二醇醚插层嵌段共聚物的结晶性能

金小芳1, 王平1, 易国祯2, 杨宇2, 张国耀2   

  1. 1. 北京化工大学材料科学与工程学院, 北京 100029;
    2. 中国纺织科学研究院, 北京 100025
  • 收稿日期:1999-08-22 出版日期:2000-05-24 发布日期:2000-05-24
  • 通讯作者: 张国耀(1939年出生),男,高级工程师,从事高分子结构和性能的研究,近年来集中研究高分子基纳米复合材料.
  • 基金资助:

    国家自然科学基金(批准号:59873021)

Crystallization Behavior of Polyethylene Glycol Terephthalate/Polyethylene Glycol Intercalated Block Copolymers

JIN Xiao-Fang1, WANG Ping1, YI Guo-Zhen2, YANG Yu2, ZHANG Guo-Yao2   

  1. 1. College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
    2. China Textile Academy, Beijing 100025, China
  • Received:1999-08-22 Online:2000-05-24 Published:2000-05-24

摘要: 合成了不同用量、不同分子量的聚乙二醇醚(PEG)或聚丁二醇醚(PTMC)与聚对苯二甲酸乙二醇酯(PET)/蒙脱土(MMT)的嵌段共聚物。研究了MMT在共聚物中的分散状态及PEG或PTMG对PET/MMT插层聚合物结晶性能的影响。结果表明,MMT在共聚物中以纳米尺寸分散;加入PEG或PTMG增强了聚酯链段的柔顺性,使共聚物熔体降温过程的结晶温度提高,冷结晶温度降低,即插层嵌段共聚物的结晶速率提高;在合成的共聚物中,分子量为2000,用量为DMT的6%的PEG对插层共聚物结晶速率的促进作用最大

关键词: 聚对苯二甲酸乙二醇酯/聚乙二醇醚, 蒙脱土, 插层嵌段共聚物, 结晶性能, 纳米复合材料

Abstract: Polyethylene glycol terephthalate/polyethylene glycol(poly tetramethylene glycol)/Montmorillonite intercalated block copolymers, PET/PEG (PTMG)/MMT, were synthesized with different mass fractions and molecular weights of PEG. The dispersion of MMTin copolymer matrixes and the influence of PEGor PTMGon the crystallization behavior of PET/MMTwere studied. It was revealed that MMTlayers were dispersed at nano-scale in PET/PEGmatrixes. PEGor PTMGsegments improved the flexibility of PETmolecular chain, resulting in the decrease of the cold crystallization temperature of the intercalated block copolymers and the increase of the melt crystallization temperature. It meant that the crystallization rate of PET/PEG/MMTwas faster than that of PET/MMT. Among the copolymers we synthesized, PEG-2000 (mass fraction:6%) had the best promoting effect on the crystallization rate of PET/MMT.

Key words: Polyethylene glycol terephthalate/polyethylene glycol(PET/PEG), Montmorillonite, Intercalated block copolymer, Crystallization behavior, Nanocomposite

中图分类号: 

TrendMD: