竹沥液主要组分对APMP竹浆白度的影响

摘要

The effect of the main components of bamboo succus on the brightness of alkaline hydrogen peroxide chemical mechanical pulp ( APMP) of Bambusa Chungii was investigated. The CC-MS analysis results showed that there am many chromophore or auxochrome groups of unsaturated bond in the bamboo succus. The contents of methyl benzene, xyiene and hydroquinone. In the: bamboo succus are 75. 88% , 0. 98% and 0. 41 % respectively, and the ihree materials have great effects on APMP brightness, especially the hydroquinone, which makes the pulp's brightness declines 3. 4% ISO. The brightness of unhleachcd APMP pulp prepared with the bamboo chip pre-extraeted with 60% elhamil is 59c ISO higher than the control sample, the brightness of the bleached pulp is 6. 94% ISO higher, and the p. C value is lower. The succus consumes more bleaching agents, and affects the brightness and yellowing of APMP pulp badly. Through XPS analysis, the contents of non-carbohydrale and the unsaturated groups of C =0 , O-C-O and 0 =C-O increase on fiber's surface, but the content of carbohydrate declines.%研究了竹沥液主要组分对粉单竹APMP浆白度的影响.通过GC-MS分析发现,竹沥液成分中不饱和键的发色或助色基团较多,含量较大的为甲苯 二甲苯和对苯二酚.其中甲苯含量为75.88％,二甲苯含量为0.98,％对苯二酚含量为0.41％,这三种物质对纸浆白度的影响都较大,尤其是对苯二酚.通过XPS分析可知,添加甲苯、二甲苯和对苯二酚后,纤维表面含C=O、O-C-O、O-C-O不饱和键基团增加了.