摘要
采用气相色谱-质谱联用(GC-MS)对APMP废液中酚类物质进行鉴别,同时对不同方式处理的OCC纸浆进行纤维性能分析和成纸物理性能检测。GC-MS分析表明,APMP废液中含有3种酚类物质———对-甲氧基-苯酚、紫丁香醇和松柏醇,并且在其与漆酶共同处理OCC纸浆过程中这些酚类物质参与反应;模型物凝胶色谱(GPC)分析表明,漆酶处理后小分子酚类物质发生了自由基缩合,产物聚合;纤维形态和表面电镜分析表明,聚合的小分子酚类物质以缩合木素的形式迁移到纤维表面,增加纤维表面木素含量,从而提高成纸强度特别是湿环压强度。
This paper studied the working mechanism of natural mediators（phenols derived from small molecule lignin existing in APMP（alkaline peroxide mechanical pulp） waste liquor） in laccase-assisted modification of OCC（old corrugated container） pulp.Using gas chromatography-mass spectrometry（GC-MS） to analysis natural phenolic compounds,the changes of fiber surface morphology and physical properties of the sheet after laccase/natural mediator（existing in APMP waste liquor） system treatment were studied.GC-MS confirmed that APMP waste liquor contained three major phenolic compounds,namely： 4-methoxyphenol,syringol and coniferyl alcohol.These phenolic compounds participated the laccase treatment,thus the lignin content on fiber surface increased therefore the paper strength,especially wet ring crush strength was improved.
出处
《中国造纸学报》
CAS
CSCD
北大核心
2011年第2期16-20,共5页
Transactions of China Pulp and Paper
基金
国家自然科学基金项目(项目编号30771694)
天津市科技计划发展项目(编号06TXTJJC14302)
