PREPARATION OF RIGID POLYURETHANE FOAM FROM LIQUEFIED WHEAT STRAW

摘要：

Wheat straw was liquefied in the mixture of polyethylene glycol and glycerin catalyzed by sulfuric acid at the temperature 130～160℃. The liquefaction products had the hydroxyl number of 250～550mg KOH/g which were suitable to be used as the polyol component to manufacture rigid polyurethane foam. The thermal and mechanical properties of the polyurethane foam are characterized. The mechanical strength of the polyurethane foam was significantly improved by the addition of liquefaction products. The decomposition temperature of the polyurethane foam was found to increase with the addition of liquefied bagasse. It is concluded that the liquefied wheat straw components act as hard segments in polyurethane network formations. The polyurethane foam could be degraded at ambient temperature in the present of microorganism.

关键词： polyurethanes foams liquefied wheat straw

作者: Chen Fangeng Lu Zhuomin

作者单位: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Key Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry, Chines

会议类型: 国际会议

会议名称: The 3rd International Symposium on Emerging Technology of Pulping and Papermaking(ISETPP)(第三届制浆造纸新技术国际研讨会)

会议地点: 广州

会议语种:英文

页码: 873-878

在线出版日期: 2006-11-08（万方平台首次上网日期，不代表论文的发表时间）