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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of Hydrogels by Polymerization of Itaconic Acid–Choline Chloride Deep Eutectic Solvent
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Synthesis of Hydrogels by Polymerization of Itaconic Acid–Choline Chloride Deep Eutectic Solvent

机译：衣康酸-氯化胆碱深共熔溶剂的聚合合成水凝胶

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摘要

Itaconic acid (IA)–choline chloride (CC) deep eutectic solvents (DES) were prepared and characterized by NMR, TGA, and DSC. Poly(itaconic acid–co–bisacrylamide) hydrogels were synthesized by in situ polymerization-crosslinking of the DES. For comparison, the hydrogels were also prepared in water under the same process conditions, that is, temperature, time, initial concentration of the monomer, the initiator, and N,N0-methylenebisacrylamide (BAA) as the cross-linking agent. Chemical structure of the polymers was proved by elemental analysis and FTIR. The values of insoluble gel fraction and water swelling of obtained hydrogels suggest that polymers prepared in DES have higher cross-link density. Preliminary comparative studies of polymerization of IA in water and in DES medium indicated higher polymerization rate resulting from the presence of the choline salt, what might explain properties of the hydrogels prepared in DES. This study shows that DES can be used both as a solvent and catalyst in free-radical polymerization processes.
机译：制备了衣康酸（IA）-氯化胆碱（CC）的低共熔溶剂（DES），并通过NMR，TGA和DSC对其进行了表征。聚衣康酸-双丙烯酰胺水凝胶是通过DES的原位聚合-交联合成的。为了比较，还在相同的工艺条件下，即在温度，时间，单体，引发剂的初始浓度和作为交联剂的N，N0-亚甲基双丙烯酰胺（BAA）的条件下，在水中制备水凝胶。通过元素分析和FTIR证明了聚合物的化学结构。所得水凝胶的不溶性凝胶分数和水溶胀值表明，在DES中制备的聚合物具有较高的交联密度。 IA在水和DES介质中聚合的初步比较研究表明，由于胆碱盐的存在，聚合速率更高，这可以解释DES中制备的水凝胶的性能。这项研究表明，DES可以在自由基聚合过程中同时用作溶剂和催化剂。

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