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In Situ Lignin Sulf...
In Situ Lignin Sulfonation for Highly Conductive Wood/Polypyrrole Porous Composites
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- Mastantuoni, Gabriella G. (author)
- KTH,Glykovetenskap,Wallenberg Wood Science Center,KTH Royal Inst Technol, Sweden; KTH Royal Inst Technol, Sweden
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- Tran, Van Chinh (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten,Wallenberg Wood Science Center
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- Engquist, Isak, 1967- (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Berglund, Lars, 1956- (author)
- KTH,Wallenberg Wood Science Center,Glykovetenskap,KTH Royal Inst Technol, Sweden
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- Zhou, Qi (author)
- KTH,Glykovetenskap,Wallenberg Wood Science Center,KTH Royal Inst Technol, Sweden; KTH Royal Inst Technol, Sweden
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(creator_code:org_t)
- 2022-10-11
- 2023
- English.
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In: Advanced Materials Interfaces. - : Wiley. - 2196-7350. ; 10:1
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Abstract
Subject headings
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- To address the rising need of sustainable solutions in electronic devices, the development of electronically conductive composites based on lightweight but mechanically strong wood structures is highly desirable. Here, a facile approach for the fabrication of highly conductive wood/polypyrrole composites through top-down modification of native lignin followed by polymerization of pyrrole in wood cell wall. By sodium sulfite treatment under neutral condition, sulfonated wood veneers with increased porosity but well-preserved cell wall structure containing native lignin and lignosulfonates are obtained. The wood structure has a content of sulfonic groups up to 343 µmol g−1 owing to in situ sulfonated lignin which facilitates subsequent oxidative polymerization of pyrrole, achieving a weight gain of polypyrrole as high as 35 wt%. The lignosulfonates in the wood structure act as dopant and stabilizer for the synthesized polypyrrole. The composite reaches a high conductivity of 186 S m−1 and a specific pseudocapacitance of 1.71 F cm−2 at the current density of 8.0 mA cm−2. These results indicate that tailoring the wood/polymer interface in the cell wall and activating the redox activity of native lignin by sulfonation are important strategies for the fabrication of porous and lightweight wood/conductive polymer composites with potential for sustainable energy applications.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- composites
- conductivity
- energy
- polypyrrole
- sulfonated wood
- Aromatic compounds
- Lignin
- Polymerization
- Polypyrroles
- Redox reactions
- Sodium compounds
- Sulfur compounds
- Wooden buildings
- Electronics devices
- Lignosulfonates
- Native lignins
- Porous composites
- Sulphonated wood
- Sulphonation
- Sustainable solution
- Wood structure
- Wood
Publication and Content Type
- ref (subject category)
- art (subject category)
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