利用低共熔溶剂制备甲壳素纳米晶须  

Preparation of Chitin Nanowhiskers via Deep Eutectic Solvent

作　　者：刘雪芬 卜一帆 吉亚丽[1,2] LIU Xuefen;BU Yifan;JI Yali(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620,China;College of Materials SCIENCE and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学纤维材料改性国家重点实验室,上海201620 [2]东华大学材料科学与工程学院,上海201620

出　　处：《东华大学学报（自然科学版）》2020年第4期584-588,共5页Journal of Donghua University(Natural Science)

摘　　要：低共熔溶剂(deep eutectic solvent,DES)是一种新兴的绿色溶剂,具有可回收利用的优点。利用氯化胆碱与苯磺酸形成的低共熔溶剂作为酸解体系成功制备了甲壳素纳米晶须(chitin nanowhiskers,CNWs),结合酸解时间、反应配比的研究获得了最佳的工艺条件,并通过扫描电子显微镜、红外光谱、Zeta电位以及光学显微镜对CNWs的结构形貌进行了表征。结果表明:当甲壳素与DES的质量配比为1∶20、反应时间为2 h时,可获得形态均匀、长径比为30~40的CNWs,产率达到61.0%;以制备的CNWs为皮克林乳化剂,可获得稳定的水包油型(O/W)皮克林乳液。Deep eutectic solvent(DES)is one of green solvents having advantage of recycling.Herein,chitin nanowhiskers(CNWs)was successfully prepared using a DES as acid dissolution system containing choline chloride and benzene sulfonate,and the optimal preparation condition was obtained by exploring reaction time and reactants ratio.The scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR),zeta potential analysis and optical microscopy were utilized to characterize the structure and morphologies of the prepared CNWs.The results show that the obtained CNWs exhibit uniform morphology,aspect ratio of 3040,and yield of 61.0%if the reaction time is 2 h and the mass ratio of chitin to DES is 1∶20.Furthermore,the prepared CNWs can be as Pickering emulsifier to stabilize O/W Pickering emulsions.

关 键 词：材料学 甲壳素纳米晶须 低共熔溶剂 氯化胆碱 皮克林乳化剂 

分 类 号：TB34[一般工业技术—材料科学与工程]