应用化学 ›› 1998, Vol. 0 ›› Issue (5): 59-61.

• 研究论文 • 上一篇    下一篇

水溶性聚酯的结构和性能

应宗荣1, 吴大诚2   

  1. 1. 南京理工大学高分子材料系 南京210094;
    2. 四川联合大学轻纺学院 成都
  • 收稿日期:1997-12-29 修回日期:1998-05-27 出版日期:1998-10-10 发布日期:1998-10-10

Structure and Properties of Water-Soluble Polyester

Ying Zongrong1, Wu Dacheng2   

  1. 1. Department of Polymer Material, Nanjing University of Science & Technology, Nanjing 210094;
    2. Textile College, Sichuan Union University, Chengdu
  • Received:1997-12-29 Revised:1998-05-27 Published:1998-10-10 Online:1998-10-10

摘要: 由对苯二甲酸二甲酯、间苯二甲酸、间苯二甲酸二甲酯5-磺酸钠与乙二醇等共缩聚合成 的PET型水溶性聚酯(WSP)是一种新型的水溶性聚合物,在化纤、纺织、涂料、粘合剂、电子、油墨等领域有着广泛的应用前景.化纤领域超细纤维新材料的研究、开发和生产,迫切需要一种复合纺丝用的可溶离组分材料,WSP因其结构与性能的特点,特别是可用(热)水溶离的特性,而受到普遍重视.该型水溶性聚酯在国外已研究多年,并在化纤复合纺丝、纺织等领域获 得应用[1,2],有关资料多见于专利.本文对自制的WSP进行结构表征,并研究其热性能、流变 性能和聚电解质效应,为我国水溶性聚酯的开发和应用提供一定的理论基础.

关键词: 水溶性聚酯, 结构表征, 热性能, 结晶性能, 流变性能, 聚电解质效应

Abstract: The molecular structure of a water-soluble polyester prepared by copolycondensation of dimethyl terephthalate, isophthalic acid, dimethyl isophathalate-5-sulfonic sodium with ethylene glycol, etc. and its thermal, crystal and rheological properties, as well as polyelectrolyte effect have been investigated by IR, 1H NMR and rheometric techniques. The water soluble polyester is found to be amorphous with glass temperature being 43.0 ℃ and softing point 129.7 ℃. Its melt has a shear thinning feature and shows a polyelectrolyte effect in solvents with high dielectric constant.

Key words: water-soluble polyester, structure characterization, thermal property, crystal property, rheological property, polyelectrolyte effect