高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (1): 135.

• 论文 • 上一篇    下一篇

由分子间氢键导致的丝素构象转变的FT-IR研究

孙玉宇, 刘永成, 马明华, 邵正中, 陈新, 于同隐   

  1. 复旦大学高分子科学系、化学系, 上海, 200433
  • 收稿日期:1996-10-22 出版日期:1998-01-24 发布日期:1998-01-24
  • 通讯作者: 于同隐
  • 作者简介:孙玉宇,男,25岁,博士研究生.
  • 基金资助:

    国家自然科学基金资助课题(批准号:59603005).

FT-IR Study of Conformation Transition of Silk Fibroin Induced by Intermolecular Hydrogen Bonds

SUN Yu-Yu, LIU Yong-Cheng, MA Ming-Hua, SHAO Zheng-Zhong, CHEN Xin, YU Tong-Yin   

  1. Dept. of Macromolecular Science, Departmemt of Chem., Fudan Univ., Shanghai, 200433
  • Received:1996-10-22 Online:1998-01-24 Published:1998-01-24

摘要: 用FT-IR研究发现,在丙烯腈与丙烯酸甲酯的共聚物(PANMA)与聚L-丙氨酸(PLAL)的共混体系中,丝素(SF)与PANMA的共混体系及SF与聚丙烯酸钠(NA)的共混体系中,含有羰基或其它极性基团的高分子与SF形成强弱不等的氢键.由于氢键的形成,使SF分子不得不调整自身的构象,从而引起其构象转变.讨论了可能的分子间氢键的结构.

关键词: 丝素, FT-IR, 共混, 构象转变

Abstract: FT-IR spectroscopy was used to study the conformation transition of silk fibroin in poly (acrylonitrile-co-methyl acrylate)-poly-L-alanine (PANMA-PLAL) blends, PANMA-silk fibroin(SF) blends, and poly (acrylic acid sodium) (NA)-SF blends. It was found that, in these blends, intermolecular hydrogen bonds will form between the carbonyl group of other polymers and the amide of SF. To form these hydrogen bonds, SFmust change its conformation. The possible structure of the hydrogen bonds and the mechanism of the formation of the hydrogen bonds were also discussed.

Key words: Silk fibroin, FT-IR, Blends, Conformation transition

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