POLYETHER POLYURETHANE FROM MODIFIED WHEAT STRAW OXYGEN-ALKALINE LIGNIN

作     者：Quanxiao Liu, Huaiyu Zhan, Beihai He State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China Shuhui YangTianjin University of Science and Technology, Tianjin, 300222, P. R. China Jianhua Liu Jianlu Liu, Zhenxing Pang Shandong Haihua Group Co. Ltd., Weifang, Shandong, 262737, P. R. China 

出 版 物：《天津科技大学学报》 (Journal of Tianjin University of Science & Technology)

年 卷 期：2004年第S2期

页      面：82-86页

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

主　　题：modified wheat straw oxygen-alkaline lignin diisocyanate polyethylene glycol polyurethane. 

摘      要：Polyether polyurethane was synthesized from modified wheat straw oxygen-alkaline lignin, polyethylene glycol and two different diisocyanates (diphenylemethane-4, 4’-diisocyanate, tolulene diisocyanate) by solution casting method, its properties were investigated. The results show that modified wheat straw oxygen-alkaline lignin can substitute part of polyethylene glycol to react with diisocyanate to synthesize polyurethane. The molar ratio of NCO to OH and modified wheat straw oxygen-alkaline lignin content affect the properties of lignin-based polyether polyurethane respectively. The addition of plasticizer in the polyurethane synthesis process improves the properties of synthesized polyurethane, especially the elasticity of polyurethane. The synthesized polyurethane from modified wheat straw oxygen-alkali lignin can be used as both engineering plastic and hard foam plastic in future.