榆树韧皮部抽出物的溶出规律与物理化学特性研究  

Study on Dissolving Out Law and Physical and Chemical Properties of Elm Phloem Extractives

作　　者：武书彬[1,2] 刘江燕[1] 晏群山[1] 孙乾祐[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640 [2]中国科学院广州能源研究所可再生能源与天然气水合物重点实验室,广东广州510641

出　　处：《造纸科学与技术》2011年第1期1-9,共9页Paper Science & Technology

基　　金：国家973计划(2007CB210201);国家863计划(2007AA05Z456)项目;中国科学院可再生能源与天然气水合物重点实验室开放基金项目(课题号0807K1)

摘　　要：本文以榆树韧皮部为原料,采用三种溶剂(超纯水、苯醇溶液、甲苯溶液)分别在不同时间条件下对榆树韧皮部进行抽提,分析不同抽提溶剂和不同抽提时间对抽出物的影响规律。采用红外光谱、热重分析和热解气质联用技术分别对三种抽出物的物理化学特性进行了分析。结果表明,榆树韧皮部抽出物与抽提时间关系复杂,三种抽提物的粒径范围分别为13.5-78.8nm,0.232-0.559nm,13.5-459nm。甲苯抽出物、热水抽出物和苯醇抽出物的主要热失重区间依次变宽;热水抽出物、苯醇抽出物和甲苯抽出物的最终残余固体得率依次减小,而最大失重速率对应的温度则依次升高。三种抽提物的热解产物差别较大。苯醇抽出物和甲苯抽出物的红外谱图基本一致,而与热水抽提物的谱图差别较大。This paper used white elm as the research object. In three solvents （ultra pure water, benzene-alcohol solution, toluene solution） at different time condition for elm phloem extraction, analyses of different extraction sol- vents and different extraction time on extraction were done. FT - IR, thermogravimetry TG and pyrolysis GC - MS of the three extracts physical and chemical characteristics were analyzed. The result indicated the relation between the quantities of the extracts and the times of extraction was very complex. Three kinds of particle size extractives were in the range of 13.5 -78.8nm, 0. 232 -0. 559nm and 13.5 -459nm. The main range of toluene extract hot-water extract and benzene-ethanol extract became broader, successively. The yield of solid of hot-water extract ,benzene-ethanol extract and toluene extract were lower successively, while the temperature of the highest rate of losing weight was higher. The pyrolytic products of the three extracts were different. The FT - IR spectrograms of benzene-ethanol extract and toluene extract were very similar, but different from the spectrogram of hot-water extract.

关 键 词：榆白皮 粒径 TG Py—GC/MS FT—IR 

分 类 号：TS721.1[轻工技术与工程—制浆造纸工程]