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Liquefied-Wood-Based Polyurethane–Nanosilica Hybrid Coatings and Hydrophobization by Self-Assembled Monolayers of Orthotrichlorosilane (OTS)
Czech Technical University in Prague, Czech Republic.ORCID-id: 0000-0001-6940-3850
University of Ljubljana, Slovenia.
University of Ljubljana, Slovenia.
University of Ljubljana, Slovenia.
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2015 (Engelska)Ingår i: ACS Sustainable Chemistry & Engineering, ISSN 2168-0485, Vol. 3, nr 10, s. 2533-2541Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We have produced hybrid liquefied-wood-based polyurethane (LW-PU) and LW-PU/nanosilica hybrid coatings for wood substrates. The prepared hybrid polyurethane coatings were hydrophobized by self-assembled monolayers of orthotrichlorosilane (OTS) via a sol–gel dipping process. The nanosilica addition into the LW-PU system enhanced the physical properties of coatings like surface hardness and stability toward cold liquids. The OTS hydrophobized coatings were characterized by Fourier transforms infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and thermogravimetric analysis (TGA). The surface became hydrophobic as the contact angle (CA) for the water droplet on a modified hybrid coating was ∼115° and very stable. The FTIR, SEM, and EDS analysis confirmed the formation of OTS monolayers on hybrid coatings.

Ort, förlag, år, upplaga, sidor
USA: American Chemical Society (ACS), 2015. Vol. 3, nr 10, s. 2533-2541
Nyckelord [en]
Liquefied Wood, Polyurethane, Hydrophobisation
Nationell ämneskategori
Polymerteknologi
Forskningsämne
Teknik, Skog och träteknik
Identifikatorer
URN: urn:nbn:se:lnu:diva-64035DOI: 10.1021/acssuschemeng.5b00723OAI: oai:DiVA.org:lnu-64035DiVA, id: diva2:1097023
Tillgänglig från: 2017-05-21 Skapad: 2017-05-21 Senast uppdaterad: 2017-09-05Bibliografiskt granskad

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Kumar, Anuj

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