摘要
本文自制1-烯丙基-3-甲基咪唑氯盐([AMIM]Cl)离子液体,并用红外光谱对其进行表征,确定其为目标产物。用5%的NaOH溶液对三种纤维素(竹纤维素桨粕、木纤维素桨粕、微晶纤维素)进行活化,采用油浴加热方式,在一定温度(40℃,60℃,80℃,100℃)下用等量[AMIM]Cl离子液体分别溶解三种纤维素,通过偏光显微镜观察纤维素在离子液体中的溶解过程,加热6h后停止。比较纤维素溶解度。将溶解后的纤维素进行再生,比较再生前后纤维素的性质。结果表明:三种纤维素在[AMIM]Cl中,溶解度最大的是竹纤维素桨粕,可达3.35%。其次是木纤维素桨粕,可达1.46%。最小的是微晶纤维素,1.09%。经红外表征,原纤维素与再生纤维素特征峰值相同,无新官能团生成。
An ionic liquid of 1-allyl-3-methyl imidazol ium ch lor ide sa lt was prepared in th is paper. It was characterized by infrared spectrum. Three kinds of cellulose (bamboo cellulose paddle meal, wood cellulose paddle meal and microcrystalline cellulose) were activated with 5% NaOH solution. The three cellulose were dissolved in the same amount of [AMIM] Cl ionic liquid at a certain temperature(40℃,60℃,80℃,100℃) by oil bath heating. The dissolution of cellulose in ionic liquid was observed by prolarizing microscope. Stop heating for 6 hour. Comparison of Solubility and Properties between cellulose and regenerated Cellulose. Three Cellulose in [AMIM]Cl Ionic liquid, the highest solubility of bamboo cellulose oars can reach 3.35%. Followed by wood cellulose oars, up to 1.46%. The smallest is microcr y stalline cellulose, up to 1.09%.The characteristic peaks of cellulose and regenerated cellulose remained basically unchained after IR characterization.
出处
《科技创新导报》
2019年第16期83-86,共4页
Science and Technology Innovation Herald
基金
承德市科技局项目(项目编号:201804A055)
河北民族师范学院项目(项目编号:PT2017011)
关键词
离子液体
纤维素
温度
再生纤维素
Ionic liquid
Cellulose
Temperature
Regenerated cellulose
