The NewWave project aims to contribute to building a circular economy by introducing sustainable raw materials in different manufacturing lines, replacing toxic chemicals and lowering the environmental footprint of the products. The raw materials are obtained from the thermochemical fractionation of biomass. This process converts biomass residues by fast pyrolysis into Fast Pyrolysis Bio-Oil (FPBO). Subsequently, the FPBO is fractionated based on chemical functionality-yielding into a reactive lignin fraction and a sugar-rich fraction, both being excellent starting materials to produce sustainable, bio-based chemicals. The project is adapting four manufacturing lines: polyols and polyurethane, hydroxymethyl furfural and derivatives, engineered wood panels and modified wood, to substitute traditional fossil-based materials with bio-based resources that are sustainable, nontoxic and fully recyclable. The individual manufacturing lines, as well as the integrated value chain, are assessed in detail on technical, economic, social and environmental performance to ensure the production is truly sustainable. This research focuses on the modification of wood with FPBO to develop an entirely biobased alternative to currently used toxic and fossil-based preservation agents such as copper salts, organic biocide ingredients and creosote. Ten formulations based on FPBO were prepared and characterized in terms of pot life, viscosity, and curing behaviour among others. As a follow-up of screening tests best-performing formulations will be selected and used for modification of larger amounts (ca. 1m3) of wood (Radiata pine, Scots pine, European beech). Samples will be then evaluated in terms of weathering, durability, fire, and mechanical performance. As manufactured products are meant for cladding and decking tests regarding machinability and suitable mounting will be performed. After extensive laboratory tests, new construction products will be manufactured at an industrial scale and used at a demonstration site. Modified wood boards, plywood, and CLT produced in the NewWave manufacturing lines will be used as cladding and construction materials that will be a part of the new InnoRenew CoE building. The performance of the materials, moisture content, and temperature in envelope layers will be monitored in situ, allowing for observing the deterioration of materials and estimating service life regarding functionality and aesthetics. This information will be used for future optimization of the formulation and modification process as well as the scheduling of recommended maintenance actions. The demo site mock-up will provide practical experience in terms of material machinability, application, and behaviour during service life.

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