本文二维码信息
二维码（扫一下试试看！）
The Study of Improving the Microstructure and Properties of OCC Fiber by Using Modified Laccase-Glutamic Acid System
  
DOI：10.11980/j.issn.0254-508X.2017.04.001
Key Words:OCC pulp  modified laccase  glutamic acid  pore structure  carboxyl group
Fund Project:国家自然科学基金(NO.31570568)；制浆造纸工程国家重点实验室开放基金(NO.201535)；广东省高层次人才基金(NO.201339)。
Author NameAffiliation
孔凡娇1 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640 
万金泉1,2,* 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640；2.华南理工大学环境与能源学院,广东广州,510006 
马邕文1,2 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640；2.华南理工大学环境与能源学院,广东广州,510006 
王　艳2 2.华南理工大学环境与能源学院,广东广州,510006 
董俊晶1 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640 
Hits: 6405
Download times: 1940
Abstract:In this study the laccase was modified by the reaction between the L-phenylalanine methyl ester hydrochlorides and the carboxyl group(—COOH) of amino acid terminal of laccase. The influence of modified laccase-glutamic acid system on microstructure and physical properties of OCC fiber was investigated. The results showed that the microstructure of fiber treated with modified laccase-glutamic acid changed significantly, and partial fibrillation was observed. And the fiber surface appeared closely laminated structure. The fiber micropores collapsed and expanded to mesopores gradually, and BET specific surface area and average pore size increased. The content of carboxyl groups increased 26.9% compared to the control pulp after modified laccase-glutamic acid treatment by Michael addition reaction between the glutamic acid and lignins. The OCC fiber after modified laccase-glutamic acid treatment had good beating and papermaking performance, while the power consumption decreased.
View Full Text  HTML  View/Add Comment  Download reader