Biogenic Straw Aerogel Thermal Insulation Materials
Journal Article
·
· Advanced Engineering Materials
- State Univ. of New York (SUNY), Buffalo, NY (United States); Department of Mechanical and Aerospace Engineering, Department of Chemistry University at Buffalo, The State University of New York Buffalo, NY 14260
- State Univ. of New York (SUNY), Buffalo, NY (United States)
Biogenic wheat straw is a carbon-storing building insulation material. However, the enzymatic hydrolysis ratio of its cellulose is relatively low due to the presence of hemicellulose and lignin hindering its thermal insulation performance. In this work, we report aerogel and straw composites with thermal conductivity of 35 mW m–1 K–1, while high cellulose fiber conversion in straw is obtained by using a hybrid mechanical and chemical process. Furthermore, we show that the in-situ cellulose-reinforced silica aerogel nanocomposites exhibit an optimal thermal conductivity of 32 mW m–1 K–1 by using 50 wt% of aerogel. Moreover, the hydrophobic aerogel-cellulose composites show a low density, high porosity (90 %), high compression modulus (1.9 MPa), superhydrophobicity, and superior reusability. This work provides a cost-effective and facile method to manufacture biogenic composites from agriculture waste materials, promising for carbon-sequestration building insulation applications.
- Research Organization:
- State Univ. of New York (SUNY), Buffalo, NY (United States)
- Sponsoring Organization:
- USDOE; USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- Grant/Contract Number:
- AR0001630
- OSTI ID:
- 1968465
- Alternate ID(s):
- OSTI ID: 1963130
- Journal Information:
- Advanced Engineering Materials, Journal Name: Advanced Engineering Materials Journal Issue: 13 Vol. 25; ISSN 1438-1656
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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