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林业科学 ›› 2004, Vol. 40 ›› Issue (2): 142-147.doi: 10.11707/j.1001-7488.20040225

• 论文及研究报告 • 上一篇    下一篇

利用FTIR对苯基异氰酸酯与不同含水率纤维素反应的研究

顾继友 高振华 李志国 李晓萍 隋淑娟   

  1. 东北林业大学材料科学与工程学院,哈尔滨150040
  • 收稿日期:2003-06-25 修回日期:1900-01-01 出版日期:2004-03-25 发布日期:2004-03-25

The FTIR Study on the Reaction of Benzyl Isocyanate and Cellulose with Different Moisture Content

Gu Jiyou,Gao Zhenhua,Li Zhiguo,Li Xiaoping,Sui Shujuan   

  1. College of Material Science and Engineering,Northeast Forestry University Harbin150040
  • Received:2003-06-25 Revised:1900-01-01 Online:2004-03-25 Published:2004-03-25

摘要:

通过FTIR红外光谱对苯基异氰酸酯与醇、水、不同含水率纤维素反应产物的研究,确定了产物的红外光谱吸收峰的归属。研究发现:异氰酸酯与绝干纤维素羟基反应产物是氨基甲酸酯,随着纤维素含水率的增加,异氰酸酯与纤维素的反应越来越低,与水反应的比例越来越高;当纤维素含水率为9.78%时,异氰酸酯绝大部分与水反应生成取代脲

关键词: 苯基异氰酸酯, 纤维素, 含水率, 竞争反应, 红外光谱

Abstract:

The paper studied the results of benzyl isocyanate with n-propanol, water and cellulose with different moisture content (MC) by FTIR, in which the IR bands were identified. The reaction product of isocyanate and cellulose carbamate. With MC of cellulose increasing, the reaction of isocyanate and cellulose decreases while the reaction of isocyanate with water increases. When the MC of cellulose is 9.78%, most of isocyanate reacts with water absolutely and forms dibenzylurea.

Key words: Benzyl isocyanate, Cellulose, Moisture content, Competitive reaction, IR spectroscopy