摘要
低共熔溶剂因低毒、低成本和生物降解等优良特性,在生物质资源预处理方面具有酸碱预处理无可比拟的优势,因此,作为绿色溶剂逐渐成为近十年的研究热点。本文采用低共熔溶剂结合超声或高压均质处理燕麦秸秆制备微晶纤维素,通过粒径、聚合度、扫描电镜、红外光谱和X射线衍射表征与分析,发现得到的微晶纤维素平均粒径为18.61~26.27μm,平均聚合度在132~366之间,相对结晶度为48.52%~65.51%,具有纤维素Ⅰ晶型。其中低共熔溶剂结合高压均质处理得到的燕麦秸秆微晶纤维素效果最佳,呈现松散的多孔结构。上述研究为燕麦秸秆微晶纤维素的制备提供了一种高效绿色的制备途径。
Deep eutectic solvents have unparalleled advantages compared with acid and base in the pretreatment of biomass resources due to their low toxicity,low cost,and biodegradability.Therefore,as green solvents,they have gradually become a research hotspot in the past decade.In this paper,microcrystalline cellulose was prepared from oat straw by deep eutectic solvents combined with ultrasonic treatment or high-pressure homogenization.Through particle size measurement,polymerization degree determination,scanning electron microscope,infrared spectrometer,X-ray diffraction analysis,microcrystalline cellulose has the crystalline form of celluloseⅠ,the average particle size is 18.61~26.27 um,the average degree of polymerization is 132~366,and the relative crystallinity is 48.52%~65.51%.The deep eutectic solvents combined with high-pressure homogenization has the best effect,and the prepared microcrystalline cellulose has porous and loose structure.An efficient and green preparation method was provided for the preparation of microcrystalline cellulose from oat straw in the above study.
作者
刘艳霞
邱雪娇
刘占英
胡建华
李永丽
朱明达
LIU Yanxia;QIU Xuejiao;LIU Zhanying;HU Jianhua;LI Yongli;ZHU Mingda(School of Chemical Engineering,Inner Mongolia University of Technology,Hohhot,Inner Mongolia 010051,China;Center for Energy Conservation and Emission Reduction in Fermentation Industry in Inner Mongolia 010051,China;Engineering Research Center of Inner Mongolia for Green Manufacturing in Bio-fermentation Industry 010051,China)
出处
《内蒙古工业大学学报（自然科学版）》
2022年第2期120-127,共8页
Journal of Inner Mongolia University of Technology：Natural Science Edition
基金
内蒙古自治区科技重大专项(2019ZD021)
内蒙古工业大学校基金资助项目(RZ1900000301)。
关键词
低共熔溶剂
燕麦秸秆
微晶纤维素
超声
高压均质
deep eutectic solvents
oat straw
microcrystalline cellulose
ultrasound
high pressure homogenization
