Characterization the Reaction of Isocyanate and Cellulose by XPS

编号 zgly0000339005

文献类型 期刊论文

文献题名 Characterization the Reaction of Isocyanate and Cellulose by XPS

学科分类 220.5540;木材学

作者 GAOZhenhua  GUJiyou  LIZhiguo 

作者单位 CollegeofMaterialScienceandEngineerine  NortheastForestryUniv 

母体文献 中国林业科技: 英文版 

年卷期 2004,3(2)

页码 41-48

年份 2004 

分类号 S781.4 

关键词 异氰酸苯酯  纤维素  X-射线光电光谱学  水分含量  竞争作用  木材 

文摘内容 The X-ray photoelectron spectroscopy (XPS) technique was used to study the reaction of phenyl isocyanate and cellulose with different moisture contents (MC). The C1S XPS peak of cellulose is only one symmetrical contribution at 285.95 eV. While the C1S XPS peaks of N,N-dibenzylurea, the reaction resultant of phenyl isocyanate and water, have two contributions at 288.6±9.1 eV and 284.7±0.1 eV corresponding to the carbonyl group and phenyl ring group, respectively. Their area ratio is between 11.88 and 11,98 that is quite neat to the theoretical value of 12.0. With the moisture content (MC) of cellulose increased, the proportion of isocyanate reacted with water increased. When the MC reaches 9.78%, 92.98% of all consumed isocyanate will react with water. By spattering analysis, it reveals that the reaction resultants of benzyl isocyanate distribute mainly on the surface of cellulose。