化学学报 ›› 2008, Vol. 66 ›› Issue (16): 1903-1908. 上一篇    下一篇

研究论文

近红外光谱法研究升温导致的尼龙1010结晶区域的变化

徐 艳 武培怡*

  

  1. (复旦大学高分子科学系 聚合物分子工程教育部重点实验室 上海 200433)

  • 收稿日期:2008-03-03 修回日期:2008-03-31 出版日期:2008-08-28 发布日期:2008-08-28
  • 通讯作者: 武培怡

A Near Infrared Spectroscopic Study of Temperature-induced Changes of Crystalline Domains in a Nylon 1010 Sample

XU, Yan WU, Pei-Yi*   

  1. (Key Laboratory of Molecular Engineering of Polymers (Ministry of Education), Department of Macromolecular Science, Fudan University, Shanghai 200433)
  • Received:2008-03-03 Revised:2008-03-31 Online:2008-08-28 Published:2008-08-28
  • Contact: WU, Pei-Yi

采用近红外光谱技术和二维相关分析法研究尼龙1010膜在升温过程中的结构变化. 为了排除非晶区域酰胺基团的影响, 事先对尼龙1010的样品膜进行了氘代, 并测量了其最终氘代率. 结果证明, 尼龙1010的结晶区域在升温过程中被逐渐破坏, 首先是其主链碳氢结构发生调整, 进一步影响到结合酰胺, 导致氢键作用减弱并最后生成自由胺基.

关键词: 尼龙1010, 氘代, 近红外光谱, 二维相关分析

Near infrared (NIR) spectroscopy in combination with two-dimensional correlation analysis were applied to investigate the heating process of a deuterated nylon 1010 film. To suppress the interference of amide groups in the amorphous phase, the film was placed in heavy water for 4 weeks for deuteration and the deuteration rate was determined. The results indicated that the crystalline domains of nylon 1010 were gradually destroyed upon heating. During the heating process, the methylene groups in the backbone changed earlier than the dissociation process of the intermolecular hydrogen bonding of the amide groups.

Key words: nylon 1010, deuteration, near infrared spectroscopy, two-dimensional correlation analysis