CJCU

Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (12): 1626.

• Articles • Previous Articles    

The Syntheses and Adsorption Properties of Some Aminated Crosslinked Polystyrene with Low Exchange Capacities as the Adsorbents for Gypenosides

MA Jian-Biao, LI Jian-Min, WANG Li-Min, SHI Zuo-Qing, HE Bing-Lin   

  1. Insitilute of Polymer Chemistry, Nankai University, Tianjin, 300071
  • Received:1992-03-28 Revised:1992-06-20 Online:1992-12-24 Published:1992-12-24

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Abstract: In order to develop the new polymeric adsorbents for gypenosides,a highly crosslinked polystyrene-type resin S-008(Ⅰ)was chloromethylated and then aminated with the mixed amines of dimethylamine/trimethylamine or diethanolamine/trimethylamine to afford ten amino resins(Ⅱ-Ⅺ)with low exchange capacities.Their chemical and physical structures were characterized and their adsorption properties were also determined.The results show that some of the resins possess high capacities and good selectivities in the adsorption of gypenosides from an aqueous extract of Gynostemma pentaphyllum(Thunb.)Makino.

Key words: Amino resins, Polymeric adsorbents, Gypenosides

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