Surface characterization of corn stalk superfine powder studied by FTIR and XRD

文献类型： 外文期刊

第一作者： Zhao, Xiaoyan

作者： Zhao, Xiaoyan;Chen, Jun;Chen, Fengliang;Wang, Xianchang;Zhu, Qingjun;Ao, Qiang

作者机构：

关键词： Corn stalk; Superfine grinding; Particle size; FTIR; XRD

期刊名称：COLLOIDS AND SURFACES B-BIOINTERFACES （ 影响因子：5.268； 五年影响因子：4.957 ）

ISSN： 0927-7765

年卷期： 2013 年 104 卷

页码：

收录情况： SCI

摘要： Corn stalk superfine powder was ground by a special designed machine. The physical chemical properties of corn stalk powders with particle sizes of >300, 300-150, 150-74,74-37 and <15 mu m were investigated. The particle size distributions of the powders were: d(90)=362, 147, 74,40 and 12 mu m. The size of corn stalk powders was smaller, the surface area (from 1.188 to 2.432 m(2)/g) and bulk density (from 0.103 to 0.1145 g/ml) were greater. Light microscopy (LM) and scanning electron microscopy (SEM) observations revealed the shape and surface morphology of five types of corn stalk powders. FTIR analysis showed that some position of absorbing peaks was shifted as the powder particle size decreased. X-ray diffraction analyses for corn stalk coarse and superfine powders revealed no evident changes in X-ray pattern. However, the crystallinity, intensity of crystal peaks and crystal size of corn stalk powders with particle sizes from >300 to 300-150 mu m dropped, then, as the size of the powders decreased, the crystallinity, intensity of crystal peaks and crystal size increased in some degree. (C) 2012 Elsevier B.V. All rights reserved.

分类号： O648

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