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首页> 外文期刊>Journal of Applied Polymer Science >PREPARATION OF SUPERABSORBENT POLYMERS BY CROSSLINKING ACRYLIC ACID AND ACRYLAMIDE COPOLYMERS
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PREPARATION OF SUPERABSORBENT POLYMERS BY CROSSLINKING ACRYLIC ACID AND ACRYLAMIDE COPOLYMERS

机译：交联丙烯酸和丙烯酰胺共聚物制备超吸收性聚合物

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摘要

High water-absorbent copolymers comprising acrylic acid (AA) and acrylamide (AM) were prepared in the presence of a crosslinking agent, monofunctional aldehyde, by a solution polymerization technique using a redox initiation system. Such copolymers have very high water absorbency and absorbing kinetics to the distilled water. The copolymer formed which absorbed about 900 g water/g dry copolymer was used to study the influence of sodium chloride on the absorption capacity at 24 degrees C. The swelling of this copolymer was studied in alcohol/water mixtures of increasing alcohol content at 294, 304, and 314 K. The main transition for ethanol/water and methanol/ water mixtures is a rapid decrease of the retention capacity of the copolymer at 50-60 vol % ethanol and 55-65 vol % methanol, respectively. Swelling in distilled water at different temperatures (T) and the effect of solvent composition were also studied. Among the variables examined were initiator concentration, polymerization temperature, and amount of AM in the copolymer. (C) 1997 John Wiley & Sons, Inc. [References: 27]
机译：通过使用氧化还原引发体系的溶液聚合技术，在交联剂，单官能醛的存在下，制备包含丙烯酸（AA）和丙烯酰胺（AM）的高吸水性共聚物。这样的共聚物对蒸馏水具有很高的吸水率和吸收动力学。使用形成的吸收了约900 g水/ g干共聚物的共聚物来研究氯化钠对24℃下的吸收容量的影响。研究了该共聚物在294酒精度增加的酒精/水混合物中的溶胀， 304和314K。乙醇/水和甲醇/水混合物的主要转变是共聚物在50-60％（体积）乙醇和55-65％（体积）甲醇中的保留能力迅速降低。还研究了在不同温度（T）下在蒸馏水中的溶胀以及溶剂组成的影响。检查的变量包括引发剂浓度，聚合温度和共聚物中AM的含量。 （C）1997 John Wiley＆Sons，Inc. [参考：27]

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