漆酶/介体系统对马尾松TMP打浆性能及纤维形态的影响  

Effects of Modification of Laccase/Mediator System on Refining Property and Fiber Morphology of Masson Pine TMP

作　　者：彭新文[1] 李新平[2] 张素风[2] 任俊莉[1] 孙润仓[1,3] 

机构地区：[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]陕西科技大学陕西省造纸技术及特种纸品开发重点实验室,陕西西安710021 [3]北京林业大学生物质化学与技术研究所,北京100083

出　　处：《华南理工大学学报（自然科学版）》2010年第4期18-22,29,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(30710103906);国家"973"计划项目(2010CB732201);制浆造纸工程国家重点实验室开放基金资助项目(200815);华南理工大学自然科学青年基金资助项目

摘　　要：研究了漆酶处理对未漂马尾松热磨机械浆打浆性能及纤维形态的影响,发现:漆酶处理能够使未漂马尾松热磨机械浆纤维的胞间层甚至初生壁产生剥蚀,纤维表面木素减少,暴露出更多富含碳水化合物的层结构,纤维更容易吸水润胀,结构更加疏松,更容易分丝帚化,同时在打浆过程中纤维的切断现象也减少;漆酶处理能较大幅度提高浆料的成纸强度,其裂断长、撕裂指数分别提高37.30%和47.33%,松厚度下降20.33%,并使动态接触角下降.结果表明,马尾松热磨机械浆纤维的漆酶改性是一种有效的改性方式,能够降低打浆能耗,改善打浆效果,提高纸页的结合强度.This paper deals with the refining property and fiber morphology of thermo-mechanical pulp（TMP） of masson pine modified with laccase/mediator system.The results indicate that,after the modification with laccase/mediator system,the middle lamella and even the primary wall of the fibers corrodes,the content of lignin on the fiber surface decreases,and more layer structure rich in carbohydrates are exposed to water.Thus,the water absorption of the fibers increases,the softness and swelling of the fibers improve,and the refining property improves to some extent.Moreover,it is found that the breaking length and tearing index of the paper sheet formed by the fibers with laccase modification increase by 37.30% and 47.33%,respectively,the bulk decreases by 20.33%,and the contact angle also decreases.It is thus concluded that the laccase modification is effective in improving the refining property of masson pine TMP and the strength of paper sheet.

关 键 词：漆酶改性 马尾松 热磨机械浆 打浆性能 纤维形态 纸页性能 

分 类 号：Q55[生物学—生物化学] TS743.14[轻工技术与工程—制浆造纸工程]