含六碳烷基季铵盐聚合物水凝胶的溶胀性能研究

Swelling Behavior of Hexane-containing Polymers Hydrogels

摘要:

采用紫外辐照方法，以简单易得的丙烯酸二甲胺基乙酯（DMAEA）、正溴己烷为原料，制得丙烯酰氧乙基二甲基己基溴化铵（6CQ），其与2-羟基乙基丙烯酸酯（HEA）反应，制备了四种6CQ与HEA质量比不同的丙烯酸羟乙酯-co-丙烯酰氧乙基二甲基己基溴化铵p（HEA-co-6CQ）季铵盐型水凝胶（命名为N9010，N8020，N7030，N6040）。通过FTIR与1HNMR确证了产物结构。考察了温度、时间及电解质浓度对溶胀行为的影响。结果表明，四种水凝胶中，N6040溶胀性能较好,在5 h即可达溶胀平衡，且在10-50℃时溶胀率无明显变化，对温度依赖性不强；溶胀时间对四种水凝胶溶胀率略有影响，但基本在4 h可以达到溶胀平衡；电解质溶液对水凝胶影响比较大，四种水凝胶的溶胀率均比在去离子水中明显降低。热重分析表明，该类水凝胶样品在低于230 ℃环境温度下非常稳定。

Abstract:

P(HEA-co-6CQ) Polymers Hydrogels of four ratios was prepared by the UV polymerization, Using the tetraethylene glycol dimethacrylate as cross-linking agent. The temperature, time and electrolyte solution’s influence on the swelling behavior were studied. The result showed that the hydrogels has no strong reliance on temperature, and there is no obvious change on the swelling rate between the low temperature and high temperature. Swelling time has a less impact on hydrogels, but it can achieve swelling equilibrium about 4h. The effect of electrolyte solution on hydrogel is relatively large, and the swelling ratio is obviously lower than that in deionized water. The thermogravimetric analysis showed that the hydrogel was stable at 230 ?C. The product structure was characterized by IR and NMR spectra.