Original scientific paper

https://doi.org/10.5552/drvind.2023.0117

Influence of Pre-Impregnation Acetic Anhydride and Heating Time on Mechanical and Physical Properties of Wood-Plastic Composites

Seyyed Khalil Hosseinihashemi orcid.org/0000-0001-6236-0376 ; Department of Wood Science and Paper Technology, Karaj Branch, Islamic Azad University, Karaj, Iran
Mohammad-Ali Akhoundi orcid.org/0009-0009-4485-6170 ; Department of Wood Science and Paper Technology, Karaj Branch, Islamic Azad University, Karaj, Iran
Younes Shirmohammadli orcid.org/0000-0002-4695-1368 ; Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, New Zealand
Nadir Ayrilmis orcid.org/0009-0009-4485-6170 ; Department of Wood Mechanics and Technology, Forestry Faculty, Istanbul University-Cerrahpasa, Bahcekoy, Sariyer, Istanbul

Abstract

This research aimed to assess the influence of different pre-impregnation times (PITs) (60, 180, and 300 min), heating or reaction times (H/RTs) (60, 90, and 120 min), and chemical modification of wood flour (WF) on the mechanical and physical properties of wood-plastic composites (WPCs). The study employed acetylated beech (Fagus orientalis L.) flour as the filler and polypropylene (PP) as the matrix phase producing of WPC samples through melt compounding and injection molding. The resulting composites underwent testing for their physical and mechanical properties. The findings revealed that WPCs derived from acetylated wood with PITs of 60 min and H/RTs of 60 min exhibited the highest mechanical properties, except for the bending modulus. Moreover, the lowest water absorption (WA) was observed in the PITs-H/RTs combination of 60-120 min, while the lowest thickness swelling (TS) occurred in the PITs-H/RTs combination of 300-60 min. The simultaneous utilization of pre-impregnation and reaction times demonstrated a synergistic effect on the physical and mechanical properties. Consequently, the chemical modification of wood flour and the application of suitable reaction times improved the interfacial adhesion, thereby enhancing the overall performance of the WPCs.

Keywords

WPCs; wood flour; acetylation; chemical modification; mechanical properties

Hrčak ID:

311419

URI

https://hrcak.srce.hr/311419

Publication date:

15.12.2023.

Article data in other languages: croatian

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