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Effect of three tree species on UV weathering of wood flour-HDPE composites

  • Van Dinh Nguyen
  • Tat Thang Nguyen
  • Aihong Zhang
  • Jianxiu Hao
  • Weihong WangEmail author
Original Paper
  • 7 Downloads

Abstract

Eucalyptus urophylla, Acacia mangium, and Pinus caribaea are the primary species for the wood industry in Vietnam. Wood residues of these species were used to reinforce high-density polyethylene (HDPE) composites. The flexural or bending property, impact strength and surface color were evaluated after exposure to accelerated ultraviolet weathering up to 2000 h. The weathered surface was characterized by scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. The results indicate that A. mangium/HDPE composites had the lowest color change and least fading, and remained stable after 1500 h exposure. FTIR spectroscopy showed that the oxidation of the composites increased in parallel with duration of exposure by assessing the concentration of carbonyl groups on the surfaces. SEM showed that all three species reinforced composites exhibited similar severe cracks after 1000 h; however, at the end of the weathering test, E. urophylla and P. caribaea composites were more severely cracked than A. mangium composites. A. mangium also had the highest flexural strength, impact strength and crystallinity during weathering. A. mangium is the most preferable among the three species to reinforce HDPE.

Keywords

Eucalyptus urophylla Acacia mangium Pinus caribaea Polyethylene Weathering Color Mechanical property 

Notes

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Copyright information

© Northeast Forestry University 2019

Authors and Affiliations

  • Van Dinh Nguyen
    • 1
  • Tat Thang Nguyen
    • 1
  • Aihong Zhang
    • 1
  • Jianxiu Hao
    • 1
  • Weihong Wang
    • 1
    Email author
  1. 1.Key Laboratory of Biobased Material Science & Technology (Ministry of Education)Northeast Forestry UniversityHarbinChina

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