作　　者： ; ;

机构地区： 华南理工大学

出　　处： 《中国造纸学报》 1995年第S1期26-30,共5页

摘　　要： ＯＸＰＸＰ漂白的纸浆其结晶度增加，分子量降低，半漂浆（ＯｐＸＰ漂序）分子量分布范围较窄，全漂浆范围较宽并出现双峰。ＯＸＰＸＰ（或ＯｐＸＰ）漂白中活化剂处理段（Ｘ）羰基的生成是引起聚糖的降解的主要原因，但活化剂处理段本身聚糖的降解较少。Ｈ２Ｏ２漂白化学浆时聚糖有明显降解，这与Ｈ２Ｏ２漂白高得率浆是不同的。 After OXPXP bleaching the pulps have an increase in crystallinity and a decrease in average molecular weight. The molecular weight distribution is found to lie within a comparatively narrow range for semi-bleached pulps (OpXP sequence),but appears to be more extensive with two peak values for the fullbleached pulps. Polysaccharides degradation during OXPXP (orOpXP)bleaching is mainly caused by the production of carbonyl groups in the activating stage,but the degradation is less in this stage itself. The polysaccharides are markedly degraded during H2O2 bleaching of chemical pulps,but not for high yield pulps.

关 键 词： 浆 漂白 聚糖 降解

领　　域： [轻工技术与工程]