利用DSC研究异氰酸酯与纤维素的反应机理

doi:10.11707/j.1001-7488.20050319

Scientia Silvae Sinicae ›› 2005, Vol. 41 ›› Issue (3): 115-120.doi: 10.11707/j.1001-7488.20050319

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The DSC Study on the Reaction Mechanism of Isocyanate with Cellulose

Gao Zhenhua,Gu Jiyou,Li Zhiguo

College of Material Science and Engineering, Northeast Forestry University Harbin150040

Received:2003-12-30 Revised:1900-01-01 Online:2005-05-25 Published:2005-05-25

Abstract

Abstract:

The paper studied the reaction mechanism of isocyanate with cellulose containing different moisture content (MC) by DSC analysis of isothermal scanning and temperature_increased scanning. The isothermal DSC analysis showed that the Ruleless Coring Mechanism, Diffusion Mechanism and Phase Interface Mechanism would control the reaction of isocyanate and cellulose with different MC. The key effects of complicated mechanism rest with water transference and fast reaction of isocyanate and water. A mechanism function that will describe ideally the temperature_increased reaction of isocyanate and cellulose with different MC was brought forward.

Key words: isocyanate, cellulose, moisture content, DSC analysis, reaction mechanism

Gao Zhenhua;Gu Jiyou;Li Zhiguo. The DSC Study on the Reaction Mechanism of Isocyanate with Cellulose[J]. Scientia Silvae Sinicae, 2005, 41(3): 115-120.

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The DSC Study on the Reaction Mechanism of Isocyanate with Cellulose

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