Issue 12, 2013
From the journal:

Journal of Materials Chemistry A

Facile extraction of thermally stable cellulose nanocrystals with a high yield of 93% through hydrochloric acidhydrolysis under hydrothermal conditions

Houyong Yu,a   Zongyi Qin,*a   Banglei Liang,b   Na Liu,b   Zhe Zhoub  and  Long Chen*b  

* Corresponding authors

a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China
E-mail: phqin@dhu.edu.cn
Fax: +86 21 67792855
Tel: +86 21 67792861

b College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
E-mail: happyjack@dhu.edu.cn

Abstract

A facile approach for extracting cellulose nanocrystals (CNCs) was presented through hydrochloric acid hydrolysis of cellulose raw materials under hydrothermal conditions. The influences of preparation parameters, such as reaction time, reaction temperature, and acid-to-cellulose raw material ratio, and different neutralization methods on the yield, microstructure and properties were studied. A high yield of up to 93.7%, crystallinity of 88.6%, and a maximum degradation temperature (Tmax) of 363.9 °C can be achieved by combining hydrochloric acid hydrolysis under hydrothermal conditions and neutralization with ammonia, compared with only 30.2%, 84.3% and 253.2 °C for sulfuric acid hydrolysis, respectively. More importantly, good stability of aqueous CNC suspensions can also be obtained due to the existence of ammonium groups, which can easily be removed through simple heat treatment before using the CNCs.

Graphical abstract: Facile extraction of thermally stable cellulose nanocrystals with a high yield of 93% through hydrochloric acid hydrolysis under hydrothermal conditions

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Article information

DOI
https://doi.org/10.1039/C3TA01150J
Article type
Paper
Submitted
19 Nov 2012
Accepted
22 Jan 2013
First published
22 Jan 2013

J. Mater. Chem. A, 2013,1, 3938-3944

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Facile extraction of thermally stable cellulose nanocrystals with a high yield of 93% through hydrochloric acid hydrolysis under hydrothermal conditions

H. Yu, Z. Qin, B. Liang, N. Liu, Z. Zhou and L. Chen, J. Mater. Chem. A, 2013, 1, 3938 DOI: 10.1039/C3TA01150J

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