机构地区: 广东工业大学轻工化工学院
出 处: 《功能材料》 2004年第4期524-526,共3页
摘 要: 用自由基聚合法合成了NVP/HEMA和NVP/HEMA/AAm共聚物水凝胶材料,研究了温度、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度随着温度的升高而减少;水凝胶在酸性溶液中溶胀,在碱性溶液中收缩,显现出良好的pH值敏感性;水凝胶的溶胀度随着离子强度的增加而减少。 Hydrogel material was synthesized by copolymerization of NVP, HEMA and AAm. The influence of temperature, pH and ionic intensity was investigated in detail. The result showed that the swelling ratio of the hydrogels decreased with the temperature and ionic intensity increasing. In acid medium, the swelling ratio of the copolymer hydrogels was more than that of in alkaline medium.