Preparation and Characterization of High Amylose Corn Starch-Microcrystalline Cellulose Aerogel with High Absorption

文献类型： 外文期刊

第一作者： Luo, Qi

作者： Luo, Qi;Gao, Fei;Li, Dong;Wu, Min;Huang, Xin;Gao, Fei

作者机构：

关键词： microcrystalline cellulose; high amylose corn starch; dynamic mechanical analyzer

期刊名称：MATERIALS （ 影响因子：3.623； 五年影响因子：3.92 ）

ISSN： 1996-1944

年卷期： 2019 年 12 卷 9 期

页码：

收录情况： SCI

摘要： Microcrystalline cellulose (MCC) aerogels were synthesized, blendingwith high amylose corn starch of different contents based on a NaOH-urea solution, and following by vacuum freeze-drying technology. The microstructure of the aerogel was observed by scanning electron microscopy (SEM) as an interconnected, porous three-dimensional structure, while X-ray diffractogram (XRD) measurements showed that the crystalline form was converted from cellulose I to cellulose II during dissolution and regeneration. Thermogravimetric analysis (TGA) showed that the content of starch had little effect on the thermal stability of the aerogel, whereas the content of starch had great influences on absorption and viscoelastic properties. When the ratio of starch was 10% and 15%, the prepared aerogels presented a low density and abundant pores, which endowed the aerogels, not only with the highest absorption ratio of pump oil and linseed oil (10.63 and 11.44 g/g, respectively), but also with better dynamic viscoelastic properties.

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