Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/24375
Title: Chemical and structural changes in poplar wood upon steam treatment at constant temperature and pressure conditions for different time intervals
Authors: Raghuvanshi S.
Khan H.
Saroha V.
Kadam A.
Dutt, Dharm
Published in: Cellulose Chemistry and Technology
Abstract: Technology advancement has helped in the development of high-throughput equipment for the analysis of raw material in paper industries. In this research, we have used some advanced techniques to analyze the pore size, structural and chemical changes, and cellulose crystallinity of poplar wood pretreated with steam at constant temperature and pressure conditions for different treatment time. Samples were analyzed by the nitrogen adsorption test, Fourier-transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR), X-ray diffraction (XRD), and field scanning electron microscopy (FE-SEM). Slit-shaped pores were formed, with a diameter of 2.12 nm, after 30 minutes of treatment. FTIR results revealed the degradation of the lignin skeleton through the formation of guaiacyl and syringyl units and deformation in the cellulose and hemicelluloses structure. The crystallinity index (CI) increased upon steam treatment for up to 15 min, but after that, a drop in the CI was observed. The crystallite thickness (d200) increased after 15 min of treatment, due to the rearrangement of cellulose chains. However, a further increase in steam treatment duration to 30 min resulted in a decline of d200, followed by an increase in the cellulose II crystalline region and d020. The steam treatment duration of 15-30 min was found to be a critical time interval, which led to increases in the number of mesopores, CI, d200, and the cellulose II region in the poplar wood. © 2021, Publishing House of the Romanian Academy. All rights reserved.
Citation: Cellulose Chemistry and Technology, 55(44843): 961-969
URI: https://doi.org/10.35812/CelluloseChemTechnol.2021.55.82
http://repository.iitr.ac.in/handle/123456789/24375
Issue Date: 2021
Publisher: Publishing House of the Romanian Academy
Keywords: Cellulose
Cellulose crystallinity
Lignin
Mesopores
Steam
ISSN: 5769787
Author Scopus IDs: 57222098621
57211968305
57211668272
56289253100
7005982560
Author Affiliations: Raghuvanshi, S., Department of Paper Technology, Indian Institute of Technology, Uttarakhand, Roorkee, 247667, India
Khan, H., Department of Paper Technology, Indian Institute of Technology, Uttarakhand, Roorkee, 247667, India
Saroha, V., Department of Paper Technology, Indian Institute of Technology, Uttarakhand, Roorkee, 247667, India
Kadam, A., Department of Paper Technology, Indian Institute of Technology, Uttarakhand, Roorkee, 247667, India
Dutt, D., Department of Paper Technology, Indian Institute of Technology, Uttarakhand, Roorkee, 247667, India
Funding Details: ACKNOWLEDGEMENT: The authors wish to thank the Ministry of Human Resources and Development, Government of India, for financial support. The authors are thankful to IIT Roorkee Ministry of Education, India, MoE
Corresponding Author: Dutt, D.; Department of Paper Technology, Uttarakhand, India; email: dharm.dutt@pt.iitr.ac.in
Appears in Collections:Journal Publications [PT]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.