茶籽壳吸附剂的制备与表征  

Preparation and characterization of tea seed shells adsorbent

作　　者：任鹏程[1] 李立祥[1] 易昶寺 马力[1] 

机构地区：[1]安徽农业大学茶叶生物化学与生物技术教育部、农业部重点实验室,安徽合肥230036

出　　处：《食品工业科技》2014年第15期107-111,共5页Science and Technology of Food Industry

基　　金：安徽省高等学校“十五”优秀人才计划项目资助[安徽省教育厅教秘人2005 79号]

摘　　要：为探寻茶籽壳吸附剂的制备工艺,以改性产物对磷酸根的去除效果为指标,考察了物料投加量、各阶段反应温度和时间等因素对改性效果的影响,通过单因素实验与正交实验优选了最佳改性条件为:环氧氯丙烷添加量为30mL,第一阶段反应温度100℃,反应时间为2.5h,二甲胺添加量为40mL,第二阶段反应温度为65℃,反应时间为6h。随后使用傅里叶红外变换光谱(FTIR),扫描电镜(SEM)及全自动比表面积和孔隙分析仪对所得改性产物的成分、表面形态和孔隙结构进行表征。结果表明,经过改性,茶籽壳中的木质素、半纤维素和其他杂质基本被去除,但保留了纤维素的骨架,并且其表面形貌发生很大的变化,比表面积和孔隙结构十分发达。The objective of this study was to find the modification of tea seed shells.The removal of H2PO40 were used to examine the effect of material dosage, reaction temperature and time on the modification.On the basis of signal- factor and orthogonal test, the optimum modification conditions were as follows： 30mL of the epichlorohydrin,40mL of the dimethylamine, 100℃ of the first stage reaction temperature,2.5 hours of the first stage reaction temperature,and 65℃ of the second stage reaction temperature,and 6 hours of the second stage reaction temperature.The composition, morphology and structure of the modified products were characterized by Fourier Transform Infrared（FTIR）, scanning electron microscopy（SEM） and automatic specific surface area and porosity analyzer.The results showed that the morphology of tea seed shells had changed greatly,lignin and hemicellulose were removed and cellulose backbone was retained after modification.

关 键 词：茶籽壳 纤维素 改性 表征 

分 类 号：TS201.1[轻工技术与工程—食品科学]