丙烯酰胺类共聚物水凝胶的合成及性能研究  

Study on synthesis and the swelling behavior of 2-hydroxyethyl methacrylate hydrogel

作　　者：张翠荣[1] 

机构地区：[1]仲恺农业技术学院,广东广州510225

出　　处：《化学工程师》2005年第5期9-11,28,共4页Chemical Engineer

摘　　要：用自由基聚合法合成了不同摩尔配比的HEMA/AM共聚物水凝胶材料,研究了单体组成、温度、pH值、离子强度等因素对凝胶溶胀性能的影响。结果表明:水凝胶的溶胀速度较快;水凝胶在pH值小于4及pH值大于9的酸、碱溶液中发生水解,导致水凝胶的饱和含水量大幅增加,而在弱酸性溶液中几乎没有变化;水凝胶的饱和含水量对离子强度的变化不够敏感;随着温度的升高水凝胶的饱和含水量略有减少,说明此类水凝胶对温度的敏感性也较弱。Hydrogel material was synthesized by coplymerization of HEMA and AM. The influence of ingredents, temperature,pH and ionic intensity was investigated in detail. The results showed that swelling of hydrogels was very quickly; the equilibrium water contat of the hydrogels increased sharply in the strong acid medium and strong alkaline medium because of the hydrolytic, but it was not obvious to change in weak acid midium. The result also showed that the equilibrium water contat of the hydrogels was not sensitive to the temperature and ionic intensity increasing.

关 键 词：甲基丙烯酸Β-羟乙酯 丙烯酰胺 水凝胶 合成 溶胀 

分 类 号：TQ436.5[化学工程]