Production and Characterization of Lignocellulosic Aerogel from Rice Straw

Rahimi, Atefe; Abdolkhani, Ali; Hamzeh, Yahya; Hedjazi, Sahab

doi:10.22092/ijwpr.2019.125265.1524

Document Type : Research Paper

Authors

¹ Faculty of Natural Resources, University of Tehran

² Associate Professorو Department of Wood and Paper Sciences and Technology, Faculty of Natural Resources, University of Tehran, Shahid Chamran Blvd., 31585-4314, Karaj, Iran

³ Professor, Department of Wood and Paper Sciences and Technology, Faculty of Natural Resources, University of Tehran, Shahid Chamran Blvd., 31585-4314, Karaj, Iran

⁴ Associate Professor, Department of Wood and Paper Sciences and Technology, Faculty of Natural Resources, University of Tehran

https://doi.org/10.22092/ijwpr.2019.125265.1524

Abstract

DOR:98.1000/1735-0913.1398.34.124.66.1.9.1580
Rice straw rice is one of the most important lignocellulose wastes in Iran and the world. In this research, rice straw as renewable lignocellulosic materials were used to produce nano-structural lignocellulosic aerogel. For this purpose, rice straw powder was first pre-treated in sodium hydroxide aqueous alkali solution and resulting gel form mixture was transformed into physically bonded lignocellulosic porous and ultra-lightweight aerogel through consecutive processes including freezing-thawing, solvent exchange and freeze-drying. The product properties including apparent density and total porosity were determined, and other physical and chemical properties were evaluated by SEM, FTIR, XRD, nitrogen absorption (BET) and DSC methods. The results showed that a significant amount of the rice straw compounds dissolved in aqueous alkali solution and removed during the subsequent stages of aerogel production. The resulting aerogel showed a nano dimensional structure composed of particles and interconnected nanofibers, which had a great chemical and physical difference from the original rice straw.

Keywords

Main Subjects

Chemical conversion

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Iranian Journal of Wood and Paper Science Research

Production and Characterization of Lignocellulosic Aerogel from Rice Straw

References

References

Volume 34, Issue 1 - Serial Number 66
April 2019
Pages 124-133

Production and Characterization of Lignocellulosic Aerogel from Rice Straw

References

References

Volume 34, Issue 1 - Serial Number 66April 2019Pages 124-133

Volume 34, Issue 1 - Serial Number 66
April 2019
Pages 124-133