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In situ polymerizat...
In situ polymerization of polyaniline in wood veneers
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- Trey, Stacy (författare)
- KTH,Wallenberg Wood Science Center
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- Jafar Zadeh, Shadi (författare)
- KTH,Yt- och korrosionsvetenskap
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- Johansson, Mats, 1961- (författare)
- KTH,Fiber- och polymerteknologi,Wallenberg Wood Science Center
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- Jafarzadeh, Shadi (författare)
- KTH,Yt- och korrosionsvetenskap
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(creator_code:org_t)
- VTT Technical Research Centre of Finland, 2012
- 2012
- Engelska.
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Ingår i: NWBC 2012 - 4th Nordic Wood Biorefinery Conference. - : VTT Technical Research Centre of Finland. ; 4:3, s. 1760-1769
- Relaterad länk:
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The present study describes the possibility to polymerize aniline within wood veneers to obtain a semi-conducting material with solid wood acting as the base template. It was determined that it is possible to synthesize the intrinsically conductive polymer (ICP) polyaniline in situ within the wood structure of Southern yellow pine veneers, combining the strength of the natural wood structure with the conductivity of the impregnated polymer. It was found that polyaniline is uniformly dispersed within the wood structure by light microscopy and FT-IR imaging. A weight percent gain in the range of 3−12 wt % was obtained with a preferential formation in the wood structure and cell wall, rather than in the lumen. The modified wood was found to be less hydrophilic with the addition of phosphate doped polyaniline as observed by equilibrium water swelling studies. While wood itself is insulating, the modified veneers had conductivities of 1 × 10−4 to 1 × 10−9 S cm−1, demonstrating the ability to tune the conductivity and allowing for materials with a wide range of applications, from anti-static to charge-dispersing materials. Furthermore, the modified veneers had lower total and peak heat releases, as determined by cone calorimetry, because of the char properties of the ICP. This is of interest if these materials are to be used in building and furniture applications where flame retardance is of importance.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Nyckelord
- Aniline
- Conducting polymers
- Infrared imaging
- Refining
- Swelling
- Veneers
- Wooden buildings
- Conducting materials
- Cone calorimetry
- Doped polyaniline
- Flame-retardance
- In-situ polymerization
- Intrinsically conductive polymers
- Southern yellow pines
- Weight percent
- Wood
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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