【摘要】 研制了XDA负载PA膜包络体的复合树脂,并用于茶叶提取液中茶多酚、咖啡碱的分离。通过对复合工艺,如溶剂配比、PA担载量及添加剂加入量的研究,提出了复合树脂制备的优惠工艺条件。该复合树脂具有良好的吸附、洗脱性能。将溶解度参数理论用于脱附剂的选择,实验结果与理论分析相一致。更多还原

【Abstract】 In this paper, composite resins of XDA coated with PA membrane were prepared and applied to the separation of tea-polyphenols and caffeine from tea extract. The effects of such factors as proportion of casting solution,amounts of the supported PA and additive were studied in detail, thus got the optimum compound technology. These composite resins have good adsorption and desorption performances. In addition, theory of solubility parameter was attempted to the concentration selection of desorption solvent, results go well with this theory.更多还原