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Glycerol assisted pretreatment of lignocellulose wheat straw materials as a promising approach for fabrication of sustainable fibrous filler for biocomposites

Journal Article (2021)
Author(s)

Hamayoun Mahmood (University of Engineering & Technology Lahore)

Saqib Mehmood (University of Engineering & Technology Lahore)

Ahmad Shakeel (TU Delft - Rivers, Ports, Waterways and Dredging Engineering, University of Engineering & Technology Lahore)

Tanveer Iqbal (University of Engineering & Technology Lahore)

Mohsin Ali Kazmi (University of Engineering & Technology Lahore)

Abdul Rehman Khurram (University of Engineering & Technology Lahore)

Muhammad Moniruzzaman (Universiti Teknologi Petronas)

Research Group
Rivers, Ports, Waterways and Dredging Engineering
Copyright
© 2021 Hamayoun Mahmood, Saqib Mehmood, A. Shakeel, Tanveer Iqbal, Mohsin Ali Kazmi, Abdul Rehman Khurram, Muhammad Moniruzzaman
DOI related publication
https://doi.org/10.3390/polym13030388
More Info
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Publication Year
2021
Language
English
Copyright
© 2021 Hamayoun Mahmood, Saqib Mehmood, A. Shakeel, Tanveer Iqbal, Mohsin Ali Kazmi, Abdul Rehman Khurram, Muhammad Moniruzzaman
Research Group
Rivers, Ports, Waterways and Dredging Engineering
Issue number
3
Volume number
13
Pages (from-to)
1-13
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Abstract

Glycerol pretreatment is a promising method for the environmentally-friendly transformation of lignocellulosic materials into sustainable cellulose-rich raw materials (i.e., biopolymer) to fabricate biocomposites. Here, a comparison of aqueous acidified glycerol (AAG) pretreatment of wheat straw (WS) with alkaline, hot water, and dilute acid pretreatments on the thermal and mechanical characteristics of their fabricated composite board is presented. A comparison of total energy expenditure during WS pretreatment with AAG and other solutions was estimated and a comparative influence of AAG processing on lignocellulosic constituents and thermal stability of WS fiber was studied. Results imply that AAG pretreatment was superior in generating cellulose- rich fiber (CRF) as compared to other pretreatments and enhanced the cellulose contents by 90% compared to raw WS fiber. Flexural strength of acidic (40.50 MPa) and hot water treated WS composite (38.71 MPa) was higher compared to the value of 33.57 MPa for untreated composite, but AAG-treated composites exhibited lower values of flexural strength (22.22 MPa) compared to untreated composite samples. Conversely, AAG pretreatment consumed about 56% lesser energy for each kg of WS processed as compared to other pretreatments. These findings recognize that glycerol pretreatment could be a clean and new pretreatment strategy to convert agricultural waste into high-quality CRF as a sustainable raw material source for engineered biocomposite panels.