Crosslinking kinetics of the formation of lignin-aminated polyol-based polyurethane foam

被引：31

作者：

Huo, Shu-Ping ^{[1
]}

Nie, Ming-Cai ^{[1
]}

Kong, Zhen-Wu ^{[1
]}

Wu, Guo-Min ^{[1
]}

Chen, Jian ^{[1
]}

机构：

[1] Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat, Key Lab Biomass Energy & Mat, Key & Open Lab Forest Chem Engn,CAF,SFA, Nanjing 210042, Jiangsu, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2012年 / 125卷 / 01期

关键词：

crosslinking; polyurethanes; kinetics; FTIR;

D O I：

10.1002/app.35401

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

FTIR-ATR (Fourier Transform Infrared-Attenuated Total Reflectance) spectroscopic analysis was used to study the kinetics of the formation of the polyurethane foam, which was prepared by reacting a mixture of lignin-aminated polyol (LAP) and glycol (PEG) with diphenylmethane diisocyanates (MDI-50) in the presence of water as blowing agent. The crosslinking reactions were followed by monitoring the change of the absorbance of the NCO group at 2270 cm-1 in FTIR-ATR spectra. The apparent activation energy (Ea) calculated according to n-th order reaction model was 16.44 kJ/mol, and the frequency factor (A') was 2.69 min-1. Furthermore, the crosslinking reaction is approximated to be a first-order reaction. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

引用

页码：152 / 157

页数：6

共 20 条

[1] Influence of lithium chloride on the morphology of flexible slabstock polyurethane foams and their plaque counterparts [J].