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A Study on the Morp...
A Study on the Morphology, Mechanical, and Electrical Performance of Polyaniline-modified Wood - A Semiconducting Composite Material
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- Hassel, Beatriz I. (författare)
- Uppsala universitet,Tillämpad mekanik
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- Trey, Stacy (författare)
- KTH,Wallenberg Wood Science Center,SP Tech Res Inst Sweden, Sweden
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- Leijonmarck, Simon (författare)
- KTH,Tillämpad elektrokemi,Wallenberg Wood Science Center
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- Johansson, Mats (författare)
- KTH,Ytbehandlingsteknik,Wallenberg Wood Science Center
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(creator_code:org_t)
- 2014-07-09
- 2014
- Engelska.
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Ingår i: BioResources. - : BioResources. - 1930-2126. ; 9:3, s. 5007-5023
- Relaterad länk:
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https://doi.org/10.1...
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http://ojs.cnr.ncsu....
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- This study investigated the morphology, electrochemical modification with respect to the wood fiber direction, and mechanical properties of wood modified by in situ polymerization with polyaniline (PANI). This polymerization formed a composite material with applications as an antistatic, electromagnetic, anti-corrosion, and heavy metal purifying materials. The polymer was found throughout the entire structure of the wood and was quantified within the wood cell wall and middle lamella by SEM-EDX. The presence of PANI affected the conductivity of the composite specimens, which was found to be higher in the fiber direction, indicating a more intact percolation pathway of connected PANI particles in this direction. The PANI modification resulted in a small reduction of the storage modulus, the maximum strength, and the ductility of the wood, with decreases in the properties of specimens conditioned in an environment above 66% relative humidity. The in situ-polymerized PANI strongly interacted with the lignin component of the veneers, according to the decrease in the lignin glass transition temperature (T-g) noted in DMA studies.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Nyckelord
- Smart materials
- Electrical properties
- Mechanical properties
- Electron microscopy
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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