高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (7): 1137.

• 论文 • 上一篇    下一篇

两亲性高度枝化聚酯纳米微粒的合成与表征

马荣久1, 周勃1, 沈家骢1, 吴奇2, 吴加辉2, 陈锦晃2   

  1. 1. 吉林大学化学系, 长春 130023;
    2. 香港中文大学化学系, 香港
  • 收稿日期:1995-07-11 出版日期:1996-07-24 发布日期:1996-07-24
  • 通讯作者: 马荣久,男,57岁,副教授.
  • 作者简介:马荣久,男,57岁,副教授.
  • 基金资助:

    国家自然科学基金

Synthesis and Characterization of an Amphiprotic Highly Branched Polyester Nanoparticle

MA Rong-Jiu1, ZHOU Bo1, SHEN Jia-Cong1, WU Qi2, WU Jia-Hui2, CHEN Jin-Huang2   

  1. 1. Department of Chemistry, Jilin University, Changchun 130023;
    2. Department of Chemistry, The Chinese University of Hong Kong, Hong Kong
  • Received:1995-07-11 Online:1996-07-24 Published:1996-07-24

摘要: 用最简单的缩聚反应制备了一系列新的两亲性高度枝化聚酯纳米微粒(HBPN),用激光光散射技术对其在二甲基甲酰胺(DMF)和缓冲溶液(pH=12)中的溶液性质进行了研究。结果表明。HBPN粒径大小原则上可以由聚合时间来控制;在DMF中呈单分子分散,不溶于水,溶于碱性溶液,表面带负电荷;在pH=12的缓冲液中稳定,但会有极少量的缔合。

关键词: 纳米微粒, 表征, 激光光散射

Abstract: The novel amphiprotic highly branched polyester nanoparticles (HBPN) were prepared by a copolymerization(condensation) of pentaerythritol and phthalic anhydride and studied by laser light scattering (LLS) in both of N,N-dimethylformamide(DMF) and buffer solution (pH=12).The results show that the size of HBPN can be controlled basically by the copolymerization time;HBPNis monomolecular dispersion in DMF,unsoluble in water,but can be dissolved and bears negative charges on surface in alkaline solution;a little amount of HBPN aggregated still in pH=12 buffer solution.

Key words: Nanoparticle, Characterization, Laser light scattering

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