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FTIR, BET, and DTA of materials and effects of parameters to isolate cellulose fibers from reed

Le Thi Thanh, Huong1; Tran, Hoang Huu2; Tran Nguyen Minh, An2

Published Aug 19, 2024 on Dryad. https://doi.org/10.5061/dryad.5tb2rbpcz

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Aug 19, 2024 version files 5.95 MB

Abstract

This study focused on fabricating a cellulose aerogel for efficient oil spill clean up, using common reed (Phragmites australis) as the cellulose source. The process involved isolating cellulose from reed via traditional Kraft pulping, considering the effects of key factors on the isolated cellulose content. After a two-stage HP bleaching sequence, the highest cellulose content achieved was 27.2%, with 80% ISO brightness and 1% ash content under mild Kraft pulping conditions of 30% sulfidity, 20% active alkali, sustained cooking at 165°C for 3 hours, and a liquor-to-reed ratio of 8:1. Subsequently, reed-based cellulose aerogel was fabricated via a freeze-drying method using an eco-friendly NaOH/PEG aqueous solvent system, which was then modified with methyltrimethoxysilane (MTMS). The resulting aerogel exhibited remarkable characteristics, including a low density of 0.04 g/cm³, high porosity of 96%, super hydrophobicity with a water contact angle (WAC) of 141°, and a superior crude oil adsorption capacity of 35 g/g. Comprehensive characterizations of the fabricated materials, including SEM, FTIR, TGA/DSC, and WAC measurements, were evaluated. This interdisciplinary study explores the commercial promise of reed-based cellulose aerogel as a sustainable solution for oil spill clean-up efforts.