Changes in the supramolecular structures of cellulose after hydrolysis studied by terahertz spectroscopy and other methods

Hong Guo; Mingxia He; Renliang Huang; Wei Qi; Weihua Guo; Rongxin Su; Zhimin He

doi:10.1039/C4RA08314H

Changes in the supramolecular structures of cellulose after hydrolysis studied by terahertz spectroscopy and other methods†

Hong Guo,^a Mingxia He,^b Renliang Huang,^c Wei Qi,^ad Weihua Guo,^a Rongxin Su*^ad and Zhimin He^a

* Corresponding authors

^a State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
E-mail: surx@tju.edu.cn
Fax: +(86)022-27407599
Tel: +(86)022-27407599

^b College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China

^c School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China

^d Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China

Abstract

Hydrogen bonding is one of dominant forces in crystalline cellulose and lignocellulose, however, it is still a big challenge to evaluate the changes in the hydrogen bonding strength. Here, we reported a new method for measuring the changes in the hydrogen bonding strength of cellulose-based materials by terahertz time domain spectroscopy (THz-TDS). Avicel, corncob and their residual substrates after enzymatic hydrolysis were chosen as the targeted cellulose to demonstrate this method. THz adsorption in the range 0.5–2.5 THz and refractive index in the range 0.5–1.0 THz provided a direct signal corresponding to an increase in the hydrogen bonding strength for the residual samples (Avicel and corncob) after enzymatic hydrolysis. The THz results were further compared with those obtained from X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analysis. As a quick and non-invasive technique, THz spectroscopy provides unique information about the changes in the hydrogen bonding strength of cellulose-based materials. Therefore, it is a promising way to directly evaluate the hydrogen bonding strength of cellulosic macromolecules.

Supplementary files

Article information

DOI: https://doi.org/10.1039/C4RA08314H
Article type: Paper
Submitted: 07 Aug 2014
Accepted: 17 Oct 2014
First published: 17 Oct 2014

Download Citation

RSC Adv., 2014,4, 57945-57952

Permissions

Request permissions

Changes in the supramolecular structures of cellulose after hydrolysis studied by terahertz spectroscopy and other methods

H. Guo, M. He, R. Huang, W. Qi, W. Guo, R. Su and Z. He, RSC Adv., 2014, 4, 57945 DOI: 10.1039/C4RA08314H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

RSC Advances

Changes in the supramolecular structures of cellulose after hydrolysis studied by terahertz spectroscopy and other methods†

Abstract

Supplementary files

Article information

Download Citation

Permissions

Changes in the supramolecular structures of cellulose after hydrolysis studied by terahertz spectroscopy and other methods

Social activity

Search articles by author

Spotlight

Advertisements