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.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
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
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
laccase modification
masson pine
thermo-chemical pump
refining property
fiber morphology
paper sheet property
