Application of Alkaline Ionic Liquids in the Pretreatment Process of Eucalyptus Kraft Pulping

BioResources

卷:11

Chao Liu¹  Youming Li¹  Yi Hou²  Junxin Xu²  Songqing Hu³ 

[1] China;

[2] South China University of Technology;

[3] State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China;

关键词: Lignin;    Kraft pulping;    Paper properties;    [Mmim]DMP;   

DOI  :  10.15376/biores.11.4.9036-9046

来源: DOAJ

【 摘 要 】

In order to explore the potential application of green solvent ionic liquids (ILs) in the kraft pulping process, eucalyptus wood was pretreated by [Mmim]DMP before normal pulping. The results showed that materials pretreated shortly by the ionic liquid had a higher yield and viscosity coupled with a lower potassium permanganate value and residual lignin content in the pulp, as a result of the cooking process. It was also inferred that alkaline [Mmim]DMP pretreatment could dissolve lignin effectively from fiber to result in a stronger binding force and more entangled properties. Paper tensile and burst strength were improved by about 40% and 60%, respectively. These results provide a new way for eucalyptus to be utilized in the kraft pulping process.

【 授权许可】

Unknown