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Tannin based foams modified to be semi-conductive: Synthesis and characterization
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. SP Tecnical Research Institute of Sweden, Stockholm, Sweden .ORCID iD: 0000-0003-3201-5138
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry. KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center.
KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center. SP Tecnical Research Institute of Sweden, Stockholm, Sweden .
2015 (English)In: Progress in organic coatings, ISSN 0300-9440, E-ISSN 1873-331X, Vol. 78, 488-493 p.Article in journal (Refereed) Published
Abstract [en]

The objective of this study was to modify highly insulative and lightweight biorenewable foam thermosets to be semi-conductive for primarily building material applications. The foams were formed and then posttreated with in-situ polymerization of polyaniline, both doped and undoped, adsorbing and possibly absorbing (observed by SEM-EDX) to the foam structure at levels of 100-120 wt%. The modified tannin foams were shown to be semi-conductive in comparison to the highly insulative structure prior to polyaniline modification. While the 50% protonated polyaniline modified foams, or doped foams, had a higher conductivity than the undoped polyaniline modified foams, the acid used in fabrication of the foams provided some degree of conductivity to the undoped PANI modified foams. Moreover, the modified foams had an increased volume of 15% after modification, were more sensitive to moisture, and the polyaniline did not affect the degradation temperature of the foams.

Place, publisher, year, edition, pages
2015. Vol. 78, 488-493 p.
Keyword [en]
Wood modification, Pulsed electric field, Polyaniline, Impregnation, Postia placenta
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-159983DOI: 10.1016/j.porgcoat.2014.06.013ISI: 000347754000062Scopus ID: 2-s2.0-84919463558OAI: oai:DiVA.org:kth-159983DiVA: diva2:790796
Note

QC 20150225

Available from: 2015-02-25 Created: 2015-02-12 Last updated: 2017-12-04Bibliographically approved

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Johansson, Mats

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