紫外光谱法检测棉织物中[BMIM]Cl含量  

Determination of[BMIM]Cl content in cotton fabrics by ultraviolet spectroscopy

作　　者：付金凡 谭文丽 季巧 于清源 袁久刚 FU Jinfan;TAN Wenli;JI Qiao;YU Qingyuan;YUAN Jiugang(School of Textile Science and Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China;United Testing Services(Jiangsu)Co.Ltd.,Suzhou 215228,Jiangsu,China)

机构地区：[1]江南大学纺织科学与工程学院,江苏无锡214122 [2]江苏中纺联检验技术服务有限公司,江苏苏州215228

出　　处：《纺织高校基础科学学报》2024年第5期12-19,共8页Basic Sciences Journal of Textile Universities

基　　金：国家自然科学基金面上项目(31771039)。

摘　　要：1-丁基-3-甲基咪唑氯化盐(1-butyl-3-methylimidazolium chloride,[BMIM]Cl)离子液体在纤维素材料的溶解、增塑以及改性加工中有着广泛的应用,但是[BMIM]Cl有一定的生物毒性,因此其含量检测对于棉织物的加工具有重要意义。为了检测棉织物中[BMIM]Cl的含量,文章以水、甲醇、乙醇为溶剂,借助超声波法研究棉织物中[BMIM]Cl的提取情况,通过紫外光谱法对提取液的吸光度进行测量,间接确定织物中[BMIM]Cl的含量。研究结果显示:提取溶剂、提取料液比、提取温度、提取时间、超声功率、提取次数对[BMIM]Cl的提取率都有影响。其中水是[BMIM]Cl提取的较优溶剂,在其他条件相同时,料液比越小、提取温度越高、提取时间越长或者超声功率越大,[BMIM]Cl的提取率就越高,在三次提取后棉织物中[BMIM]Cl的提取率最高可达90%。采用紫外光谱法对织物中的[BMIM]Cl进行检测具有灵敏度较高,方法简单、快速的优点。Ionic liquid 1-butyl-3-methylimidazole chloride([BMIM]Cl)has widespread applications in dissolving,plasticizing,and modifying processing of cellulose materials,but[BMIM]Cl has certain biological toxicity.Therefore the content detection is of great significance for the processing of cotton fabrics.In order to detect the content of[BMIM]Cl in cotton fabrics,the article studied the extraction of[BMIM]Cl in cotton fabrics using ultrasonic method with water,methanol,and ethanol as solvents.Then,the absorbance of the extracted solution was measured by UV spectroscopy,indirectly determining the content of[BMIM]Cl in the fabrics.The results show that the solvent,liquid ratio,temperature,time,ultrasonic power,and number of extractions all affect the extraction rates of[BMIM]Cl.Among them,water is the preferred solvent for[BMIM]Cl extraction.Under the same conditions,the smaller the liquid ratio,the higher the extraction temperature,the longer the extraction time,or the higher the ultrasonic power,the higher the extraction rate of[BMIM]Cl.The extraction rate of[BMIM]Cl in cotton fabrics can reach up to 90%after three times of extraction.The detection of[BMIM]Cl in fabrics by ultraviolet spectroscopy has the advantages of high sensitivity,simplicity and rapidity.

关 键 词：离子液体 1-丁基-3-甲基咪唑氯化盐 纤维素 紫外光谱法 超声波萃取 

分 类 号：TS111[轻工技术与工程—纺织材料与纺织品设计]