二乙烯苯-异氰酸三烯丙基酯-丙烯腈共聚物大孔树脂对原花青素的吸附

根据原花青素含有疏水性的苯环和酚羟基的特点,设计合成了含有苯环和酰胺基的大孔二乙烯苯-异氰酸三烯丙基酯-丙烯腈(DTA)共聚物吸附树脂,DTA树脂通过疏水作用和氢键吸附原花青素.比较了DTA吸附树脂和3种商品化吸附树脂ADS-5(非极性)、ADS-8(弱极性)和ADS-17(中极性)对原花青素的吸附性能.结果表明,DTA、ADS-8、ADS-17对原花青素的吸附既包含疏水作用又有氢键参与.在合适的单体和致孔剂配比情况下合成的DTA吸附树脂对原花青素有很好的吸附性能.

ADSORPTION OF PROANTHOCYANIDINS BY MACROPOROUS DIVINYLBENZENE-TRIALLY ISOCYANURATE-ACRYNITILE COPOLYMER RESINS

Polymeric adsorbents for the adsorption of proanthocyanidins were designed and synthesized. Based on the structural character of proanthocyanidins which contain phenyl rings and phenolic hydroxyl groups, macroporous divinylbenzene-trially isocyanurate-acrynitile copolymer (DTA) resins containing phenyl rings and amide groups were synthesized. Hydrophobic interaction and hydrogen bonding were expected to contribute the adsorption of proanthocyanidins on DTA resins. The adsorption of proanthocyanidins on DTA resins and three commercially available polymeric adsorbents, ADS-5 (nonpolar), ADS-8 (slightly polar) and ADS-17 (moderate polar) were compared. It was found that the adsorption of proanthocyanidins on DTA, ADS-8 and ADS-17 was driven by both hydrophobic interaction and hydrogen bonding. DTA resins with proper ratios of monomers and porogens possessed excellent adsorption performance for proanthocyanidins.