作　　者： ; ; ; ; ;

机构地区： 广西大学轻工与食品工程学院

出　　处： 《中国造纸》 2012年第2期1-5,共5页

摘　　要： 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。 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 GC-MS analysis results showed that there are many chromophore or auxochrome groups of unsaturated bond in the bamboo succus.The contents of methyl benzene,xylene and hydroquinone in the bamboo succus are 75.88%,0.98% and 0.41% respectively,and the three materials have great effects on APMP brightness,especially the hydroquinone,which makes the pulp＇s brightness declines 3.4%ISO.The brightness of unbleached APMP pulp prepared with the bamboo chip pre-extracted with 60% ethanol is 5% 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-carbohydrate and the unsaturated groups of C=O,O—C—O and O=C—O increase on fiber＇s surface,but the content of carbohydrate declines.

关 键 词： 竹沥液 白度

领　　域： [轻工技术与工程]