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首页> 外文期刊>Journal of Applied Polymer Science >Cryostructuration of polymer systems. XXIV. Poly(vinyl alcohol) cryogels filled with particles of a strong anion exchanger: Properties of the composite materials and potential applications
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Cryostructuration of polymer systems. XXIV. Poly(vinyl alcohol) cryogels filled with particles of a strong anion exchanger: Properties of the composite materials and potential applications

机译：聚合物系统的低温结构化。二十四。填充有强阴离子交换剂颗粒的聚乙烯醇冰凝胶：复合材料的性能和潜在应用

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摘要

A composite material produced from a poly(vinyl alcohol) cryogel with entrapped particles of the strong anion-exchange resin Amberlite is presented. The properties of the composite material depended strongly on whether the resin was used in OH- form or Cl- form. The ion-exchange filler in OH- form caused both a significant reinforcement of the composite material and an increase in the gel fusion temperature. These effects were thought to be associated with the additional ionic bonding between the continuous and disperse phases. Beads 200-600 mum in size were prepared from the composite material and used in expanded-bed ion-exchange chromatography for the capture of the negatively charged solutes benzoate and lactate from the suspension of negatively charged cells. The plausibility of the approach has been demonstrated on model systems composed of yeast cells and benzoate and with a real fermentation broth produced after lactic acid fermentation. (C) 2004 Wiley Periodicals, Inc.
机译：提出了一种由聚乙烯醇冷冻凝胶与强阴离子交换树脂Amberlite截留的颗粒制得的复合材料。复合材料的性能很大程度上取决于树脂是以OH-形式还是Cl-形式使用。 OH-形式的离子交换填料既引起复合材料的显着增强，又引起凝胶熔化温度的升高。这些作用被认为与连续相和分散相之间的额外离子键有关。用该复合材料制备大小为200-600微米的珠子，并将其用于膨胀床离子交换色谱法中，以从带负电的细胞悬浮液中捕获带负电的溶质苯甲酸酯和乳酸酯。在由酵母细胞和苯甲酸盐组成的模型系统上，以及乳酸发酵后产生的真实发酵液中，已经证明了该方法的合理性。 （C）2004年Wiley Periodicals，Inc.

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