作　　者： ; ; ; ;

机构地区： 广西大学

出　　处： 《质谱学报》 2008年第6期356-360,共5页

摘　　要： 利用裂解气相色谱-质谱联用(PyGC-MS)技术分析竹子硫酸盐浆原浆,氧脱木素后纸浆,二氧化氯漂白后纸浆中残余木素。实验结果表明,二氧化氯漂白浆残余木素的热稳定性高于未漂浆和氧脱木素浆残余木素,未漂浆和氧脱木素浆残余木素的热稳定性十分接近,不同温度点的热失重相差甚微。经过氧脱木素和二氧化氯漂白后,木素结构均受到一定程度破坏,其中氧脱木素由于处理条件剧烈,导致木素结构稳定性最差,因此氧脱木素浆残余木素的低沸点裂解碎片的含量最高。 Residual lignin of unbleached kraft bamboo pulp, chlorine dioxide bleached and oxygen delignified pulps were analyzed by PyGC-MS. It was found that the thermal stability of residual lignin of chlorine dioxide bleached was higher than that of unbleached pulp and oxygen delignified pulp. The thermal stability of residual lignin of unbleached pulp was similar to that of oxygen delignified pulp. The structure of residual lignin was destroyed after chlorine dioxide bleaching and oxygen delignification, especially the residual lignin of oxygen delignified pulp. The charge of lower boiling fragments of residual lignin of oxygen delignified pulp was the highest.

关 键 词： 硫酸盐法竹浆 裂解 气相色谱 质谱 二氧化氯漂白 氧脱木素

领　　域： [理学] [理学]