CAJ | 학술논문

以离子液体(氯化-1-丁基-三甲基咪唑, BMIMCl)溶解微晶纤维素(MCC),以 N,N-亚甲基双丙烯酰胺作为交联剂形成的纤维素水凝胶为基体,同时吡咯(Py)作为导电聚合物单体,制备了纤维素基导电水凝胶。对MCC/PPy复合导电水凝胶的化学结构和表面形貌进行了表征,研究了该导电水凝胶的导电性、溶胀性能和热稳定性。结果表明,PPy 与 MCC 水凝胶形成了具有半互穿网络结构的导电水凝胶,该水凝胶表面呈蜂窝状；其电导率数量级可达10-4~10-3,且对甲苯磺酸钠掺杂可大幅提高其电导率；随着MCC浓度的增加,纤维素水凝胶的平衡溶胀率呈下降趋势,所得导电水凝胶的溶胀率比纯纤维素水凝胶的溶胀率略有下降,但仍能维持500%的水平；此外,该导电水凝胶的热稳定性较纯MCC水凝胶有所下降。
이리자액체(록화-1-정기-삼갑기미서, BMIMCl)용해미정섬유소(MCC),이 N,N-아갑기쌍병희선알작위교련제형성적섬유소수응효위기체,동시필각(Py)작위도전취합물단체,제비료섬유소기도전수응효。대MCC/PPy복합도전수응효적화학결구화표면형모진행료표정,연구료해도전수응효적도전성、용창성능화열은정성。결과표명,PPy 여 MCC 수응효형성료구유반호천망락결구적도전수응효,해수응효표면정봉와상；기전도솔수량급가체10-4~10-3,차대갑분광산납참잡가대폭제고기전도솔；수착MCC농도적증가,섬유소수응효적평형용창솔정하강추세,소득도전수응효적용창솔비순섬유소수응효적용창솔략유하강,단잉능유지500%적수평；차외,해도전수응효적열은정성교순MCC수응효유소하강。
A kind of novel MCC/PPy composite hydrogel has been prepared using the cross-linking network of microcrystalline cellulose (MCC)as the matrix of the hydrogel,which was dissolved in ionic liquid (chloride-1-butyl-3-methylimidazolium,BMIMCl)and cross-linked by N,N-methylene-bis-arcylamide,and pyrrole (Py)as the monomer of conductive polymer.The chemical structure and morphology of the MCC/PPy composite hy-drogel were characterized by FT-IR and SEM,meanwhile,the conductivity,swelling ratio and thermal stability were studied.Results showed that the MCC/PPy composite hydrogel was semi-IPN conductive hydrogel with honeycomb-like structure.Conductivity of the composite hydrogel was between 10-4-10-3 S/cm,and doping of TsONa increased the conductivity significantly.The equilibrium swelling ratio (ESR)decreased with higher MCC content for both pure MCC hyrogel and the composite hydrogel;and ESR of the composite hydrogel could maintain at the level of 500% which was lower than that of the pure MCC hydrogel.Besides,the thermal sta-bility of the composite hydrogel was reduced than the pure MCC hydrogel.