摘要
纤维素降解产物一般为平均聚合度(DPw^-)150以上的纤维素链段或是小分子产物,但对纤维素降解为低聚合度葡聚糖的研究较少.本实验采用磷酸降解棉纤维的方法制备了DPw^-为100~140、60~100和7的不同低聚合度的葡聚糖.并且针对DPw^-为10—60葡聚糖难以获得的问题,考察了这一范围内的葡聚糖迅速降解为水溶性葡聚糖的动力学.从而得到了一种从棉纤维中制备低聚合度葡聚糖的新方法.
At present, the average degree of polymerization ( DPw^- ) of products from cellulose degradation were cellulose segment with above DPw^- 150 or small molecules in general, but the study on the production of low DPw^- glucans from cellulose was less discussed. In this experiment, the different low DPw^- glucans from cotton cellulose degraded by phosphoric acid were prepared. To solve the problem that DPw^- 10 - 60 glucans were hard to be obtained, the kinetics about DPw^-10 - 60 glucans degradation to water-soluble glucans rapidly was studied. This experiment has provided a new method for preparation of low polymerization degree glucans from cotton cellulose.
出处
《河北工业大学学报》
CAS
2015年第2期62-67,共6页
Journal of Hebei University of Technology
基金
天津市自然科学基金(13JCQNJC05000)
国家自然科学基金(21176055)
河北省自然科学青年基金(B2015202306)
关键词
棉纤维
磷酸
聚合度
葡聚糖
动力学
cotton cellulose
phosphoric acid
polymerization degree
glucans
kinetics