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Published in: Cellulose 8/2019

27-04-2019 | Note

Preparation of spherical nanocellulose from waste paper by aqueous NaOH/thiourea

Authors: Shaobo Zhang, Feiran Zhang, Liping Jin, Bo Liu, Yi Mao, Yang Liu, Jintian Huang

Published in: Cellulose | Issue 8/2019

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Abstract

Sphere shape nanocellulose with cellulose II type crystal structure was prepared from waste paper by the swelling on aqueous system NaOH/thiourea/urea, a efficient, inexpensive, and less toxic strategy. The crystalline structure of bleached pulp and nanocellulose was performed using XRD. The nanocellulose exhibits the cellulose II type crystal structure. The crystallinity index of the nanocellulose is calculated to be 48.85%, lower than those of bleached pulp (64.42%). The FTIR of the bleached pulp and the nanocellulose were collected. It indicated that lignin and hemicellulose were removed during the dissolution of cellulose. Sphere shape nanocellulose particles were observed by scanning electron microscopy and transmission electron microscopy. The particle size distribution of nanocellulose was determined using dynamic light scattering. It showed an average size of 50 nm. The thermal behaviors of the bleached pulp and nanocellulose were studied by thermo gravimetric. The obtained nanocellulose had better thermal stability than bleached pulp, which have potential applications in transistors and batteries with high thermal stability.

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Literature
go back to reference Shuai Z, Fu CF, Li F, Yu J, Gu L (2009) Direct preparation of a novel membrane from unsubstituted cellulose in NaOH complex solution. Iran Polym J 18:767–776 Shuai Z, Fu CF, Li F, Yu J, Gu L (2009) Direct preparation of a novel membrane from unsubstituted cellulose in NaOH complex solution. Iran Polym J 18:767–776
Metadata
Title
Preparation of spherical nanocellulose from waste paper by aqueous NaOH/thiourea
Authors
Shaobo Zhang
Feiran Zhang
Liping Jin
Bo Liu
Yi Mao
Yang Liu
Jintian Huang
Publication date
27-04-2019
Publisher
Springer Netherlands
Published in
Cellulose / Issue 8/2019
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-019-02434-9

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