Polyurethane Foams and Bio-Polyols from Liquefied Cotton Stalk Agricultural Waste

被引:23
|
作者
Wang, Qingyue [1 ]
Tuohedi, Nuerjiamali [1 ]
机构
[1] Saitama Univ, Grad Sch Sci & Engn, Saitama, Saitama 3388570, Japan
关键词
liquefaction; cotton stalk; bio-polyol; polyurethane foams; biodegradable; thermal properties; WHEAT-STRAW; LIQUEFACTION; BIOMASS; ALCOHOLS; RESIDUE; WOOD;
D O I
10.3390/su12104214
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Cotton is planted on a large scale in China, especially in the Xinjiang Region. A large amount of agricultural waste from cotton plants is produced annually, and currently poses a disposal problem. In this study the product after liquefaction of cotton stalk powder was mixed with diphenylmethane diisocyanate to prepare polyurethane foams. The effects of the liquefaction conditions on the properties of the polyols and polyurethane foams produced using cotton stalk were investigated. The optimal processing conditions for the liquefied product, considering the quality of the polyurethane foams, were studied as a function of the residue fraction. Bio-polyols with promising material properties were produced using liquefaction conditions of 150 degrees C, reaction time of 90 min, catalyst content of 3 wt.%, and 20 w/w% cotton stalk loading. We investigated the optimal processing conditions for producing bio-foam materials with mechanical properties comparable to those of petroleum-based foam materials. This study demonstrated the potential of cotton stalk agricultural waste for use as a feedstock for producing polyols via liquefaction. It was shown that polyethylene glycol 400 (PEG400) and glycerin can be used as alternative solvents for liquefaction of lignocellulosic biomass, such as cotton stalk, to produce bio-polyol and polyurethane foams.
引用
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页数:13
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