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Effect of polyvinyl alcohol (PVA)/Si-Al hybrid composites on the mechanical properties of ultra-low density fiberboard (ULDF)
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering. Fujian Agriculture and Forestry University, Fuzhou, China.
Fujian Agriculture and Forestry University, Fuzhou, China.
Fujian Agriculture and Forestry University, Fuzhou, China.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Wood Science and Engineering.ORCID iD: 0000-0001-5872-2792
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2016 (English)In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225Article in journal (Refereed) Submitted
Abstract [en]

The microstructure and properties of ultra-low density fiberboard (ULDF) were affected by the different contents of polyvinyl alcohol (PVA). They were tested by using scanning electron microscope (SEM), Fourier transform infrared spectrometer (FTIR), X-ray diffractometer (XRD), thermogravimetric analyzer (TGA), and microcomputer control electronic universal testing machine, respectively. The SEM result showed that the microstructure of ULDFs was affected by the PVA. The FTIR and XRD results showed that there were two forms between PVA and Si-Al sol. They were combining with chemical bond and physical cross linking. The TGA results revealed that the thermostability of ULDF was decreased with the increasing content of PVA. Combined with the TGA and mechanical properties results, the reasonable content of PVA which was 30% was obtained. Under this condition, the modulus of rupture, modulus of elasticity, and the internal bond strength of ULDF were significantly improved from 0.13, 16.09, and 0.021 MPa to 0.35, 24.86, and 0.038 MPa, respectively.

Place, publisher, year, edition, pages
2016.
National Category
Other Mechanical Engineering
Research subject
Wood Science and Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-4062Local ID: 1ed34ee6-0aea-4bbb-8e9e-8104c93592f0OAI: oai:DiVA.org:ltu-4062DiVA, id: diva2:976924
Note

Upprättat; 2015; 20151105 (aliwan)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-05-02

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Chen, TingjieWang, Alice

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