Abstract:

The ESCA study indicated that the C 1S peak of cellulose is only one symmetrical contribution at 285.95 eV. While the C_1S peaks of N,N-dibenzylurea, the reaction resultant of phenyl isocyanate and water, has two contributions at (288.6±0.1)eV and (284.7±0.1)eV corresponding to the carbonyl group and phenyl ring group respectively. With the moisture content (MC) of cellulose increased, the proportion of isocyanate reacted with water is increasing. 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.

Key words: Benzyl isocyanate, Cellulose, Moisture content, Competitive reaction, ESCA analysis