期刊
ENVIRONMENTAL TECHNOLOGY & INNOVATION
卷 24, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.eti.2021.101874
关键词
Waste bamboo; Leather shavings; Semi-liquefaction; Aerogel; Sound absorbing; Thermal insulation
资金
- Key Laboratory of Leather Chemistry and Engineering (Sichuan University) , China
- Sichuan University-Zigong 2019 Special Fund Project for Science and Technology Cooperation, China [2019 CDZG-10]
This study successfully developed a functional biobased aerogel derived from waste bamboo fibers and gelatin, which exhibited high porosity and excellent sound absorption performance, providing a new way for effectively treating bamboo and leather wastes.
The conversion of biomass waste resources into value-added products is an interesting subject. In this paper, a functional biobased aerogel derived from waste bamboo fibres and gelatin was successfully developed. Hydrochloric acid, phenol, and leather shavings were used as additives, and under the action of microwaves, the waste bamboo was semi-liquefied. Semi-liquefied bamboo (SLB) was dispersed in gelatin (G) solution, and then the solution was cross-linked and freeze-dried to obtain SLB-G aerogels. The prepared SLB-G aerogels possessed high porosity (93.6-95.7 %), low density (26.7-35.3 mg cm(-3)), low thermal conductivity (0.057-0.098 W m(-1) K-1) and excellent sound absorption performance. The results show that SLB is a mixture of bamboo fibres as the key component, showing its compatibility with gelatin solution to produce SLB-G aerogels. Compared with gelatin aerogels alone, SLB-G aerogels have higher thermal stability and mechanical strength, which are important indicators of their application value. The successful development of these aerogels provides a new way to effectively treat bamboo and leather wastes. (C) 2021 Elsevier B.V. All rights reserved.
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