CAJ | 학술논문

采用N-异丙基丙烯酰胺(NIPA)与N-乙烯基-2-吡咯烷酮(NVP)为共聚单体，以N,N-亚甲基双丙烯酰胺(BIS)为交联剂，过硫酸钾(KPS)为引发剂，通过化学交联的方法在水溶液中制备出 P(NIPA-co-NVP)共聚物水凝胶。分别探讨了单体配比、交联剂用量等实验条件对水凝胶的温敏特性和溶胀性能的影响。利用傅里叶红外(FT-IR)对共聚物水凝胶的结构进行了表征。通过实验可知：当交联剂 BIS 和引发剂 KPS 分别为单体用量的5%和0.8%，制备的水凝胶具有较高的转化率、较好的机械强度和共聚性质。共聚物水凝胶中NVP含量越高，溶胀率越大，升温时溶胀率下降程度越大，自然条件下脱水速率越快；BIS 用量越大，溶胀率越小，保水率越高，需要更长时间达到溶胀平衡。
채용N-이병기병희선알(NIPA)여N-을희기-2-필각완동(NVP)위공취단체，이N,N-아갑기쌍병희선알(BIS)위교련제，과류산갑(KPS)위인발제，통과화학교련적방법재수용액중제비출 P(NIPA-co-NVP)공취물수응효。분별탐토료단체배비、교련제용량등실험조건대수응효적온민특성화용창성능적영향。이용부리협홍외(FT-IR)대공취물수응효적결구진행료표정。통과실험가지：당교련제 BIS 화인발제 KPS 분별위단체용량적5%화0.8%，제비적수응효구유교고적전화솔、교호적궤계강도화공취성질。공취물수응효중NVP함량월고，용창솔월대，승온시용창솔하강정도월대，자연조건하탈수속솔월쾌；BIS 용량월대，용창솔월소，보수솔월고，수요경장시간체도용창평형。
Using NIPA and NVP as comonomers, BIS as crosslinking agent and KPS as initiator, copolymer hydrogel was prepared in water by the chemical cross-linking method. The influence of some experimental conditions like mo-nomer ratio and crosslinking agent dosage on the temperature sensitiveness and swelling property of prepared hydrogel was investigated. What’s more, the structure of copolymer hydrogel was also characterized by FT-IR. The results show that, when BIS dosage and KPS dosage are 5% and 0.8% of monomers, prepared copolymer hydrogel has higher con-version rate, better mechanical property and copolymerization property; the higher the NVP content in copolymer hy-drogel, the bigger the copolymer hydrogel swelling ratio, the larger the swelling ratio decline degree during heating, and the faster the dehydration rate in the natural conditions. On the other hand, the bigger BIS dosage, the smaller the swelling ratio, the higher the water retention, and the longer the time to reach the swelling equilibrium .