北京林业大学学报2016，Vol.38Issue(5)：120-125,6.DOI:10.13332/j.1000--1522.20150320
碱木质素改性及其纤维制备研究
Modification and fiber preparation of soda lignin
摘要
Abstract
In order to improve the melting property of soda lignin and prepare soda lignin-based fibers by melt-spinning, soda lignin isolated from black liquor was heated with polyethylene glycol-400 (PEG-400) at different mass ratios and then poured into water with different stirring time, followed by filtration and drying. The thermostability and viscosity as well as melt-spinning property of treated soda lignin were determined. The conclusions are obtained as follows. 1 ) Within the same stirring time, there was little effect of mass ratio on the ash content, but lignin content decreased with the increase of mass ratio;at the same mass ratio, longer stirring time resulted in the less ash content and higher lignin content. 2 ) The decomposition temperature of soda-lignin increased after the treatment with PEG-400 , but it decreased with the increasing mass ratio or stirring time. 3 ) Poor melting properties were observed from the soda-lignin treated by PEG-400 at the mass ratios of 1∶1 and 1∶2 , while the soda-lignin treated by PEG-400 at the mass ratio of 1∶3 showed good melting property. Especially for the stirring time of 2 h, soda-lignin exhibited stable melting property and could be processed into lignin-based fibers with the average diameter of 30±4. 8μm by melt-spinning at the temperature of 228℃.关键词
碱木质素/聚乙二醇/熔融性能/纤维Key words
soda lignin/polyethylene glycol-400/melting property/fiber分类
农业科技引用本文复制引用
薛凤莲,林剑,赵广杰,张扬,来雅婷..碱木质素改性及其纤维制备研究[J].北京林业大学学报,2016,38(5):120-125,6.基金项目
浙江省林业工程重中之重一级学科开放基金项目(2014lygcy010)。 （2014lygcy010）
