Characteristics of the Waste Wood Biomass and Its Effect on the Properties of Wood Sanding Dust/Recycled PP Composite.

Sanita Vitolina,Galia Shulga,Jevgenijs Jaunslavietis,Anrijs Verovkins,Talrits Betkers,Brigita Neiberte

doi:10.3390/polym14030468

Sanita Vitolina, Galia Shulga + Show 4 more

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https://doi.org/10.3390/polym14030468

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Journal: Polymers	Publication Date: Jan 24, 2022
Citations: 7	License type: CC BY 4.0

Affiliation: Latvian State Institute of Wood Chemistry

Abstract

To decrease climate changes, more research focuses on decreasing waste wood biomass (WWB) burning and increasing its conversion into value-added products. The WWB was isolated from model wood processing wastewater with a new hybrid coagulant by the coagulation/flocculation method. This study is aimed to characterize the WWB and to investigate its effect in the composition of a hybrid lignocellulosic filler on the properties of recycled polypropylene (rPP)-based wood–plastic composites (WPCs). The waste biomass contained high-molecular lignin and hemicelluloses substances and represented a finely dispersed powder. It was hydrophobic and was characterized by enhanced thermal stability. To minimize the negative effect of polymer wastes on the environment, recycled polypropylene as a polymer matrix was used with the hybrid filler in fabricating WPC samples. The presence of the coagulated WWB in the hybrid filler composition positively affects the mechanical properties, water uptake and dimensional stability of the composite samples. Such a behavior of the waste biomass showed its function as a compatibilizer, which promoted the interfacial adhesion in the composite system.

Highlights

IntroductionTo achieve socially and environmentally friendly climate and energy policies, waste wood biomass research focuses on decreasing its burning and increasing its conversion into value-added products
Climate instability, land degradation, water scarcity and carbon-intensive energy systems are just some of the socio-environmental challenges the world is facing today.Nowadays, to achieve socially and environmentally friendly climate and energy policies, waste wood biomass research focuses on decreasing its burning and increasing its conversion into value-added products
The wood dust was characterized by elemental analysis (Elementar Analysensysteme GmbH, Langenselbold, Germany), and the wood component composition was characterized according to Klason and Kürschner chemical procedures for lignin [46] and cellulose [47], respectively, as well as hemicelluloses [48]

Summary

Introduction

To achieve socially and environmentally friendly climate and energy policies, waste wood biomass research focuses on decreasing its burning and increasing its conversion into value-added products. Wood–plastic composites (WPCs) are a young generation of (semi)-biocomposites that have attracted increasing research interest in both scientific and industrial areas over the past few decades [2,3]. The use of WPCs is rapidly growing worldwide in the automobile industry and building engineering for the production of consumer goods, domestic and technical materials, etc. Such a type of composite material combines the advantages of both synthetic polymers and lignocellulosic fillers into one whole. Polyolefins (polyethylene, polypropylene) [4,5,6,7], polylactic acid [8,9] and polyvinyl chloride [10], which have a high melting flow index and low softening temperatures, are usually mixed with lignocellulosic materials for fabricating

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