摘要
采用多种分析手段对杨木P-RC APMP中的溶解和胶体物质(DCS)的特性进行了分析。结果表明,溶解物质(DS)含量占DCS的76.1%。DS的阳电荷需求量占DCS阳电荷需求量的53.0%。DCS的平均粒径为326.7 nm。DS中木素含量占DCS中木素的62.7%。DCS中碳水化合物的主要组分包括木糖、葡萄糖、甘露糖、阿拉伯糖、半乳糖以及葡萄糖醛酸和半乳糖醛酸,其中木糖含量最高,其次是葡萄糖和半乳糖醛酸。DCS的MTBE抽出物中检测到的树脂成分主要为脂肪酸、甘油酯、甾醇酯以及木素衍生物,其中脂肪酸含量较高。DCS中主要含有Na+、K+、Ca2+、Mg2+、Al3+、Fe2+/Fe3+以及硅,其中Na+含量最高。
The characteristics of dissolved and colloidal substances released from Poplar P-RC APMP were analyzed using different methods.The results showed that the content of DS（dissolved substances） from P-RC APMP accounted for about 76.1% of its DCS.The cationic demand of DS accounted for about 53.0% of DCS.The average particle size of DCS from P-RC APMP was 326.7 nm.The lignin content of DS accounted for about 62.7% of DCS.The UV analysis showed that most of the lignin of DCS was in the form of dissolved lignin.The results of GC-MS analysis indicated that the carbohydrates of DCS were mainly composed of xylan,glucose,mannose,arabinose,galactose,glucuronic acid and galacturonic acid,and the content of xylan was the highest followed by glucose and galacturonic acid.The main components of extractives in DCS extracted with methyl tert-butyl ether were fatty acids,sterol ester and glyceride,and simultaneously a lot of lignin-derivatives were also detected by GC-MS.The main metal ions in DCS were Na^＋、K^＋、Ca^2＋、Mg^2＋、Al^3＋、Fe^2＋/Fe^3＋ and Si,and the content of Na^＋ was the highest.
出处
《中国造纸学报》
CAS
CSCD
北大核心
2010年第3期13-18,共6页
Transactions of China Pulp and Paper
基金
山东省中青年科学家科研奖励基金(2006BS02017)
福建省自然科学基金(2010J05105)资助项目
