摘要
由N 乙烯基吡咯烷酮与丙烯酸 β 羟基丙酯共聚物 /聚 (丙烯酸 )所得的互穿网络水凝胶P(NVP co β HPA) /PAA具有温度及pH双重敏感特性 .在酸性条件下 ,由于P(NVP)与PAA间络合作用 ,随温度升高迅速退胀 ;在碱性条件下 ,凝胶的溶胀率远大于酸性条件下的溶胀率 。
A new IPN hydrogel poly( N vinyl pyrrolidone co β hydropropyl acrylate)/ poly(acrylic acid) was synthesized,and its temperature and pH sensitive behavior was studied.In acidic medium the swelling ratio (SR) of this hydrogel slumps suddenly and drops quickly with temperature rising due to the hydrogen bond formation between PNVP and PAA.In alkaline medium,the SR of the IPN hydrogel rises as the temperature is raised.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2001年第3期329-332,共4页
Acta Polymerica Sinica