高分子学报
高分子學報
고분자학보
ACTA POLYMERICA SINICA
2001年
3期
329-332
,共4页
N-乙烯基吡咯烷酮%丙烯酸β-羟基丙酯%刺激响应性%互穿聚合物网络%水凝胶
N-乙烯基吡咯烷酮%丙烯痠β-羥基丙酯%刺激響應性%互穿聚閤物網絡%水凝膠
N-을희기필각완동%병희산β-간기병지%자격향응성%호천취합물망락%수응효
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，且随温度的升高而逐渐增大.
由N-乙烯基吡咯烷酮與丙烯痠β-羥基丙酯共聚物／聚(丙烯痠)所得的互穿網絡水凝膠P(NVP-co-β-HPA)／PAA具有溫度及pH雙重敏感特性.在痠性條件下，由于P(NVP)與PAA間絡閤作用，隨溫度升高迅速退脹；在堿性條件下，凝膠的溶脹率遠大于痠性條件下的溶脹率，且隨溫度的升高而逐漸增大.
유N-을희기필각완동여병희산β-간기병지공취물／취(병희산)소득적호천망락수응효P(NVP-co-β-HPA)／PAA구유온도급pH쌍중민감특성.재산성조건하，유우P(NVP)여PAA간락합작용，수온도승고신속퇴창；재감성조건하，응효적용창솔원대우산성조건하적용창솔，차수온도적승고이축점증대.
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.
