Influence of supercritical carbon dioxide treatment on the physicochemical properties of cellulose extracted from cassava pulp waste

被引：6

作者：

Nanta, Phawinee ^{[1
]}

Kasemwong, Kittiwut ^{[2
]}

Skolpap, Wanwisa ^{[1
,4
]}

Shimoyama, Yusuke ^{[3
]}

机构：

[1] Thammasat Univ, Fac Engn, Dept Chem Engn, Pathum Thani 12120, Thailand

[2] Natl Sci & Technol Dev Agcy, Natl Nanotechnol Ctr, NANOTEC Res Unit, 130 Thailand Sci Pk,Phaholyothin Rd, Khlong Luang 12120, Pathumthani, Thailand

[3] Tokyo Inst Technol, Dept Chem Sci & Engn, Meguro Ku, 2-12-1 S1-33 Ookayama, Tokyo 1528550, Japan

[4] Thammasat Univ, Ctr Clin Engn, Sch Engn, Pathum Thani 12120, Thailand

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2019年 / 154卷

关键词：

Alternative technology; Cellulose; Renewable material; Supercritical carbon dioxide; PRETREATMENT; BIOMASS; ACETYLATION; EXPLOSION; FIBER; WOOD;

D O I：

10.1016/j.supflu.2019.104605

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This study aims at investigating the influence of supercritical carbon dioxide (ScCO2) treatment on the physicochemical properties of cassava-based cellulose. The ScCO2 treatment was performed in a high-pressure vessel by exposing the cellulose to ScCO2 without a co-solvent at variable pressure (P) ranging from 8 MPa to 20 MPa for 60 min. The system temperature (T) was set to 40 degrees C, 60 degrees C and 80 degrees C. Subsequently, a field emission scanning electron microscopy analysis showed that the average fibril diameter of the cellulose was approximately two times less than that of the untreated cellulose. Differential scanning calorimetry and thermogravimetric analyses showed higher temperature shifting of the decomposition peak, which indicated improved thermal stability of the ScCO2-treated celluloses. Additionally, a correlation test revealed that thermal stability of cellulose increased with the pressure of ScCO2. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：9

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