摘要
LiCl/DMAc可作为纤维素的溶剂。笔者利用在线红外技术实时跟踪碱活化纤维素在LiCl/DMAc中的溶解过程。结果表明,LiCl/DMAc可以在一定程度上破坏纤维素中氢键,实现对纤维素的溶解,无中间衍生物产生,最终溶液中纤维素主要以多聚体形式存在。同时,检测出LiCl/DMAc对纤维素的高温预溶解与室温溶解过程,且此过程可逆。
In this study,the dissolution process of alkaline-activatedcellulosein LiCl/DMAc is online-monitored by FTIR.The results show that LiCl/DMAc can dissolve the cellulose by destroying the hydrogen bonding among cellulose molecules without generation of any intermediate products.Cellulose in the solution is mainly present in the form of polymers.At the same time,the pre-dissolution process at high temperature and dissolution process at room temperature for cellulose in LiCl/DMAc can be detected,which is found to be a reversible process.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第6期159-161,共3页
Modern Chemical Industry
