Homogeneous isolation of nanocelluloses by controlling the shearing force and pressure in microenvironment

文献类型： 外文期刊

第一作者： Li, Jihua

作者： Li, Jihua;Wang, Yihong;Wei, Xiaoyi;Wang, Fei;Han, Donghui;Wang, Qinghuang;Wang, Yihong;Han, Donghui;Li, Jihua;Wang, Qinghuang;Kong, Lingxue

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关键词： Dynamic high pressure microfluidization;High pressure homogenization;Homogeneous isolation;Microenvironment;Nanocellulose

期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：9.381； 五年影响因子：8.678 ）

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收录情况： SCI

摘要： Nanocelluloses were prepared from sugarcane bagasse celluloses by dynamic high pressure microflu-idization (DHPM), aiming at achieving a homogeneous isolation through the controlling of shearing force and pressure within a microenvironment. In the DHPM process, the homogeneous cellulose solution passed through chambers at a higher pressure in fewer cycles, compared with the high pressure homogenization (HPH) process. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) demonstrated that entangled network structures of celluloses were well dispersed in the microenvironment, which provided proper shearing forces and pressure to fracture the hydrogen bonds. Gel permeation chromatography (GPC), CP/MAS ~(13)C NMRand Fourier transform infrared spectroscopy (FT-IR) measurements suggested that intra-molecular hydrogen bonds were maintained. These nanocelluloses of smaller particle size, good dispersion and lower thermal stability will have great potential to be applied in electronics devices, electrochemistry, medicine, and package and printing industry.

分类号： O629`Q53

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