利用机械浆生产木质纳米纤维素

Development of nano-ligno-cellulose produced from mechanical pulp

开发了一种可以利用机械浆细小纤维组分生产纳米纤维素的方法,并对木质纳米纤维素粒径分布进行表征。本次研究使用了Crill表征技术,测定TMP纳米纤维素和CTMP纳米纤维素Crill值,作均质化时间的函数。结果显示,TMP-NLC和CTMP-NLC的Crill值都与均质化时间相关。本研究的另一目的是使用木质纳米纤维素作为纸和纸板的增强剂,加入到CTMP和BKP浆料内,结果显示,在手抄片紧度相似的情况下,加入木质纳米纤维素后纸页的Z向强度和其它一些重要的机械性能指标都有所改善。

The objective in this work was to develop a methodology for producing mechanical pulp based nano-ligno-cellulose （NLC） from ifnes fractions. Also there has been a great deal of enthusiasm to evaluate particle size distribution of NLC. In this work the Crill characterisation technique was used. The Crill values of TMP and CTMP based nano-ligno-celluloses were measured as a function of the homogenisation time. Results showed that the Crill value of both TMP-NLC and CTMP-NLC correlated with the homogenisation time. Another objective was to utilize NLC as strength additives in paper and board grades. Laboratory sheets of CTMP and bleached kraft pulp （BKP）, with the addition of their respective NLC, were made in a Rapid K？then sheet former. It was found that handsheets of pulp ifbers blended with NLC improved the z-strength and other important mechanical properties for similar sheet densities.