标题:Structural differences of the soluble oligomers and insoluble polymers from acid-catalyzed conversion of sugars with varied structures
作者:Xu, Qing; Hu, Xun; Shao, Yuewen; Sun, Kai; Jia, Peng; Zhang, Lijun; Liu, Qing; Wang, Yi; Hu, Song; Xiang, Jun
作者机构:[Xu, Qing; Hu, Xun; Shao, Yuewen; Sun, Kai; Jia, Peng; Zhang, Lijun] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China.; [Wang 更多
通讯作者:Hu, X;Hu, Xun
通讯作者地址:[Hu, X]Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China.
来源:CARBOHYDRATE POLYMERS
出版年:2019
卷:216
页码:167-179
DOI:10.1016/j.carbpol.2019.04.012
关键词:Sugars; Acid-catalyzed conversion; Insoluble polymers; Soluble; oligomers; Structures
摘要: galactose > beta-cyclodextrin > maltose > sucrose > fructose > glucose > raffinose. Increasing temperature enhanced transformation of soluble oligomers into insoluble ones. Morphologies of the carbon materials were closely related to sugar structures. Diameters of carbon materials (microsphere form) obtained from the disaccharides and oligosaccharides were larger than that of monosaccharides. Furthermore, the microspheres from oligosaccharides had a higher affinity to each other, resulting from continued polymerization as some reactive functionalities were retained in carbon materials. In addition, graphite structure was formed in the carbon materials, even at 160 degrees C.">In this paper, acid-catalyzed conversion of nine sugars (xylose, glucose, fructose, galactose, sucrose, maltose, lactose, raffinose, and beta-cyclodextrin) with different sizes, steric structures and functionalities were investigated and impacts of the varied sugars on structures of resulting polymers were focused. Under similar reaction conditions, the yields of the carbon materials (insoluble polymers) formed followed the order: xylose " lactose > galactose > beta-cyclodextrin > maltose > sucrose > fructose > glucose > raffinose. Increasing temperature enhanced transformation of soluble oligomers into insoluble ones. Morphologies of the carbon materials were closely related to sugar structures. Diameters of carbon materials (microsphere form) obtained from the disaccharides and oligosaccharides were larger than that of monosaccharides. Furthermore, the microspheres from oligosaccharides had a higher affinity to each other, resulting from continued polymerization as some reactive functionalities were retained in carbon materials. In addition, graphite structure was formed in the carbon materials, even at 160 degrees C.
收录类别:EI;SCIE
资源类型:期刊论文
TOP