Effect of thermal modification on the practical properties of horn beam bark flour-polypropylene composites

Asadpour, Ghasem; Zabihzadeh, Seyyed Majid; Ghorbani, Maryam; Davoudi, Mahmoud

doi:10.22092/ijwpr.2016.105775

Document Type : Research Paper

Authors

¹ Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University

² M.sc graduated, Department of Wood and paper, Faculty of Natural Resources, Sari Agricultural Sciences and Natural Resources University

https://doi.org/10.22092/ijwpr.2016.105775

Abstract

Current research was conducted to investigate the effect of thermal modification on practical properties of horn beam bark flour-polypropylene composites. Wood plastic composites were divided in two levels of control and thermal modification, both levels included of 4 groups in bark fillers; 10, 20, 30 and 40%. Test samples prepared with maleic anhydride-grafted polypropylene as coupling agent by injection molding method. According to the results, bark flour increased water absorption, tensile and bending modulus. High proportion of bark fillers declined mechanical strength. Thermal modification significantly improved physical and mechanical properties of composite. Using lignocellulosic material flour bark hornbeam, tensile modulus and flexural modulus of composite material background had the highest improvement. In comparison between mechanical properties, impact resistance by adding flour bark had the greatest decrease. Thermal modification by increasing the crystallity, hemicellulose degradation, loss of polarity, increased compatibility between the two phases and uniform distribution of bark fillers in polymers, increased mechanical resistance.

Keywords

Main Subjects

Composite wood products

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Iranian Journal of Wood and Paper Science Research

Effect of thermal modification on the practical properties of horn beam bark flour-polypropylene composites

References

References

Volume 31, Summer 2 - Serial Number 55
May 2016
Pages 280-293

Effect of thermal modification on the practical properties of horn beam bark flour-polypropylene composites

References

References

Volume 31, Summer 2 - Serial Number 55May 2016Pages 280-293

Volume 31, Summer 2 - Serial Number 55
May 2016
Pages 280-293