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Hydrophobicity and resistance against microorganisms of heat and chemically crosslinked poly(vinyl alcohol) nanofibrous membranes
Natural Resources Institute Finland (Luke), Finland.
Czech Technical University in Prague, Czech Republic.
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology. (GoFP)ORCID iD: 0000-0003-0883-2306
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology. (GoFP)ORCID iD: 0000-0002-6909-2025
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2019 (English)In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 360, p. 788-796Article in journal (Refereed) Published
Abstract [en]

Poly(vinyl alcohol) (PVA) is a water-soluble, semi-ionic and biocompatible polymer with excellent chemical and thermal stability. The chemical crosslinking of PVA membrane improve its stability towards humidity and water. In the present work, PVA nanofibrous membranes were fabricated using roller electrospinning techniques. The prepared membranes were crosslinked by heat treatment, glutaraldehyde dipping, and glutaraldehyde vapour. Furthermore, octadecyltrichlorosilane (OTS) treatment was used for hydrophobization of the crosslinked membranes. The prepared crosslinked membranes were analysed by scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR). The hydrophobization of PVA nanofibrous membranes were analysed by employing optical goniometer and auto-dynamic vapour sorption (AVS) techniques. Further, the PVA membranes were tested against algae and mould growth at in-vitro laboratory conditions. The SEM and FTIR results revealed significant differences in the morphology of the PVA nanofibrous membranes and in chemical bond formation due to crosslinking treatments. Water contact angle and AVS data confirmed a hydrophobization of PVA membranes by the treatments.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 360, p. 788-796
National Category
Polymer Technologies Other Materials Engineering
Research subject
Chemistry, Organic Chemistry
Identifiers
URN: urn:nbn:se:lnu:diva-79195DOI: 10.1016/j.cej.2018.12.029ISI: 000460964000079Scopus ID: 2-s2.0-85058096376OAI: oai:DiVA.org:lnu-79195DiVA, id: diva2:1270524
Available from: 2018-12-13 Created: 2018-12-13 Last updated: 2019-08-29Bibliographically approved

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Hosseinpourpia, RezaAdamopoulos, Stergios

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