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Formaldehyde-Free Bio-composites Based on Pleurotus ostreatus Substrate and Corn Straw Waste

Authors :
Yalan Yan
Bo Wang
Xin Zhang
Xu Zeng
Jian Zhu
Xiaoe Wang
Yan Li
Shuang Ding
Hong Zhang
Bo Ren
Xiaodong Yang
Source :
BioResources, Vol 19, Iss 3, Pp 4352-4365 (2024)
Publication Year :
2024
Publisher :
North Carolina State University, 2024.

Abstract

Corn straw-based board has great potential for the protection of forest resources, waste recycling, and sustainable economic development. However, corn stalk-based board has poor mechanical properties due to its short fiber length and poor water resistance because of the presence of numerous hydrophilic hydroxyl functional groups in its structure. Natural mycelium originating from waste Pleurotus ostreatus substrate is a hydrophobic bio-adhesive. In the present study, formaldehyde-free corn stalk/P. ostreatus substrate bio-composites were prepared using the hot-pressing technique without the addition of any chemical adhesive. The mechanical properties and water resistance of the prepared bio-composites were excellent. The highest internal bonding strength (IBS) of 2.16 MPa and the minimum thickness swelling (TS) of 18.3% were observed, which are beyond the national standards for particleboard in China. These bio-composites were prepared using a simple, green, and convenient manufacturing method to promote their popularization and application. The method may, therefore, be used as a novel technical measure to resolve the problem of overuse of forestry resources and waste disposal.

Details

Language :
English
ISSN :
19302126
Volume :
19
Issue :
3
Database :
Directory of Open Access Journals
Journal :
BioResources
Publication Type :
Academic Journal
Accession number :
edsdoj.6c15198d42ac41819f4d1f9b9a2b96ad
Document Type :
article