Wettability of welded wood-joints investigated by the Wilhelmy method: part 2. Effect of wollastonite additive-Reference-Cited by-同舟云学术

Wettability of welded wood-joints investigated by the Wilhelmy method: part 2. Effect of wollastonite additive

Published:2020-07-20 Issue:1 Volume:75 Page:79-86
ISSN:1437-434X
Container-title:Holzforschung
language:en
Short-container-title:

Author:

Vaziri Mojgan¹,Karlsson Olov¹,Abrahamsson Lars²,Moghaddam Maziar Sedighi³,Sandberg Dick¹

Affiliation:

1. Luleå University of Technology , Wood Science and Engineering , Forskargatan 1 , 931 87, Skellefteå , Sweden

2. Vattenfall AB, BA Generation, BU Fuel , Engineering Projects , Evenemangsgatan 13 , 169 79, Solna , Sweden

3. RISE Research Institutes of Sweden AB , Box 5607 , SE-114 86, Stockholm , Sweden

Abstract

Abstract The effect of wollastonite on the wetting properties of welded Scots pine-joints was studied using the multicycle Wilhelmy plate method and by observation of the chemical composition of the welded joints. Welding pine with wollastonite for 5 s resulted in a decrease in the water uptake and the swelling, and an increase in the contact angle of the welded joint compared to welded wood without wollastonite. High-performance liquid chromatography and gas chromatography/mass spectrometry showed the presence of dehydration products such as furfural, 5-hydroxymethylfurfural, and levoglucosan in methanol extracts from welded joints of specimens welded with and without wollastonite. Phenols were also found by analysis using the Folin-Ciocalteu method and High-performance liquid chromatography. The importance of such compounds in relation to the wetting properties of the welded joint is discussed.

Funder

Svenska Forskningsrådet Formas

Publisher

Walter de Gruyter GmbH

Subject

Biomaterials

Link

https://www.degruyter.com/document/doi/10.1515/hf-2019-0310/pdf

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