Iroko wood (Milicia excelsa C.C. berg), a good candidate for high-speed rotation-induced wood dowel welding: An assessment of its welding potential and the water resistance of its welded joints

Formation mechanism of wood rotary welding interface by various additives

“…The molecular weight and vertical density distribution of the weld interface of the treated and untreated specime ns were obtained by MALDI-TOF and X-ray density diffraction analyses, and the internal adhesion of the weld was analyzed to comprehensively evaluate the reasons for the enhancement of the wa ter resistance of the wood weld by the addition of wood extractives. Meanwhile (Eyinga Biwôlé et al 2023) used Iroko ((Miliciaexcelsa C. C. berg)) to test the natural cold water durability of thre e Afrotropical woods (iroko (Miliciaexcelsa W.); moabi (Baillonellatoxisperma P.); padauk (Pterocar pussoyauxii Taub)) welded joints of natural cold-water durable wood were carried out as welding material, and the presence of water-resistant organic extractives in them was confirmed by MALDI-TOF analysis to enhance the water resistance of the welded joints, making it clear that Iroko woo d is a good candidate for wood welding technology, which suggests that the analysis of the specie s' extractives composition can provide a solution to the water vulnerability of welded wood and th e selection of additives provides new ideas. (Stucki et al 2023) applied modified lignin for the en hancement of water resistance in wood welding and found that sulfated lignin had the best modific ation effect, and proposed that the main modification mechanisms for the welding process are chai n entanglement, mechanical interlocking and chemical interactions.…”