聚碳酸乙烯酯代替乙二醇碳酸酯液化玉米秸秆的效果研究  

Ring-opening polymerization of ethylene carbonate to improve the liquefaction of corn stalk

作　　者：曲敬序[1] 刘孝碧[1] 李栋[1] 毛志怀[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《农业工程学报》2006年第9期172-175,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然基金资助项目(30471374)

摘　　要：通过催化液化技术和环状碳酸酯的开环聚合技术的结合,提高秸秆液化产率以及改进液化产物在交联成大分子后存在的生物降解缓慢问题。研究采用L ew is酸盐作催化剂,对乙二醇碳酸酯(EC)进行开环聚合,并利用聚合产物——聚碳酸乙烯酯(PEC)代替传统液化剂EC对玉米秸秆进行了液化。对液化产物的定量分析表明,该新工艺固定液化剂中碳酸酯基团从而将液化产率提高了31.4%。同时,新的液化产物的化学结构中引进了脂肪族碳酸酯,其聚氨酯产品的生物降解速率得到较大提高。Ring-opening polymerization of the ethylene carbonate was conducted to obtain poly ethylene carbonate, which was used to liquefy the corn stalk other than ethylene carbonate（EC）. It was found that the yield of the liquefaction was 31.4% higher that by using EC. The FTIR（Foarier Transform Infrared Spectroscopy） spectra of the liquefied corn stalk showed that the carbonate units were successfully transferred into the new production. As a result, the carbonate product which was biodegradable can make the liquefied production based polyurethane environment-friendly material.

关 键 词：秸秆 液化 生物降解 开环聚合 碳酸乙烯酯 

分 类 号：S216.2[农业科学—农业机械化工程]