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首页> 外文期刊>Journal of Applied Polymer Science >Uptake of zinc, nickel, and chromium by N-isopropylacrylamide polymer gels
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Uptake of zinc, nickel, and chromium by N-isopropylacrylamide polymer gels

机译：N-异丙基丙烯酰胺聚合物凝胶吸收锌，镍和铬

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摘要

Pure N-isopropyl acrylamide (NIPA) polymer gel and NIPA copolymers containing 2-acrylamido-2-methylpropane sulfonic acid (AMPS), 2-acetamidoacrylic acid (AAA), and acrylic acid (AA) were prepared and evaluated with respect to their capability for taking up zinc, nickel, and chromium ions from solutions. AAA-containing NIPA gels were found to take up these metal ions most efficiently. Titration of these gels verified the strong acidic nature of the AMPS-NIPA gel and the weakly acidic nature of the AA-NIPA and AAA-NIPA gels. The ion-exchange capacities, derived from the titration curves, were, however, rather low in all cases. NIPA gels are known to collapse at temperatures about 32 degrees C. This, however, was found to have no effect on the ion-exchange behavior of the gels. (C) 1998 John Wiley & Sons, Inc. [References: 13]
机译：制备了纯的N-异丙基丙烯酰胺（NIPA）聚合物凝胶和包含2-丙烯酸酰胺基-2-甲基丙烷磺酸（AMPS），2-乙酰氨基丙烯酸（AAA）和丙烯酸（AA）的NIPA共聚物，并对其性能进行了评估用于从溶液中吸收锌，镍和铬离子。发现含AAA的NIPA凝胶最有效地吸收这些金属离子。这些凝胶的滴定验证了AMPS-NIPA凝胶的强酸性和AA-NIPA和AAA-NIPA凝胶的弱酸性。然而，从滴定曲线得出的离子交换容量在所有情况下都相当低。已知NIPA凝胶在约32℃的温度下会塌陷。然而，发现这对凝胶的离子交换行为没有影响。 （C）1998 John Wiley＆Sons，Inc. [参考：13]

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