甘蔗渣液化反应制备植物多元醇的研究

论文编号:CL086  论文字数:11547,页数:25

摘要：通过对甘蔗渣液化反应的研究，以探索一种甘蔗渣新的利用方法。在以硫酸为催化剂的条件下讨论了液化试剂、液固比及反应温度等因素对甘蔗渣液化反应的影响。结果表明，甘蔗渣在PEG#400中的液化率可达到96%，而且其中的木质素全部被液化，所得液化物为聚醚酯多元醇，羟值为160mgKOH／g～30O mg KOH／g，能满足中强度硬质聚氨酯泡沫的要求。

关键词：甘蔗渣；液化反应；多元醇

Abstract: The liquefaction of  bagasse was studied in order to explore a new way for its use．The conditions of bagasse liquefaction，such as liquefaction solvent，liquid solid ratio，reaction temperature were investigated while the sulfuric acid as a catalyst．It indicated that the liquefaction efficiency of 96 could be reached in PEG #400，and the lignin was liquefied completely．The liquefied product is a polyether ester polyol and its hydroxyl value is 160mg KOH／g～300mg KOH／g，which means that the product can be satisfied as a material for moderate intensity polyurethane foam．

Keywords：bagasse; liquefaction; polyol

目录
中文摘要 Ⅰ
英文摘要 Ⅱ
目录 Ⅲ
1绪论 1
 1.1生物降解材料和技术发展 1
 1.2废弃植物原料的开发 4
 1.3液化物所得的多元醇简介 5
 1.3.1聚醚多元醇 5
 1.3.2聚酯多元醇 5
 1.4 聚氨酯的性能及其应用 5
2 实验部分 8
 2.1 原料和仪器 8
 2.1.1 液化实验原料和试剂 8
 2.1.2 液化实验的设备 9
 2.2 实验步骤 9
 2.2.1 液化过程 9
 2.2.2 渣含量的测定 10
 2.2.3液化物酸值和羟值的测定 10
 2.2.4红外光谱的测定 12
3 结果与讨论 13
 3.1 液固比对液化反应的影响 13
 3.2 温度对液化反应的影响 13
 3.3 催化剂对液化反应的影响 14
 3.4 液化试剂对液化反应的影响 15
 3.5液化过程中酸值羟值的变化 16
 3.6红外分析 18
4 总结与展望 19
致谢 20
参考文献 21