THERMAL AND MECHANICAL PROPERTIES OF BIOCOMPOSITES BASED ON GREEN PE-HD AND HEMP FIBERS

Authors

  • Silvester Bolka Polymer Technology College, Ozare 19, 2380 Slovenj Gradec, Slovenia
  • Janez Slapnik Polymer Technology College, Ozare 19, 2380 Slovenj Gradec, Slovenia
  • Rebeka Rudolf University of Maribor, Faculty of Mechanical Engineering, Smetanova 17, 2000 Maribor, Slovenia
  • Rajko Bobovnik Polymer Technology College, Ozare 19, 2380 Slovenj Gradec, Slovenia
  • Maja Mešl Polymer Technology College, Ozare 19, 2380 Slovenj Gradec, Slovenia

DOI:

https://doi.org/10.7251/COMEN1701080B

Abstract

Biocomposites of hemp fiber reinforced bio-based high density polyethylene (green PE-HD) were prepared using a maleic anhydride grafted styrene–ethylene/butylene–styrene (SEBS-g-MA) as a compatibilizer. Several compositions of biocomposites were prepared on a tween screw extruder using the full factorial design varying two factors with two levels. The mechanical and thermal properties of test specimens, prepared by injection molding, were investigated by tensile and bending tests, DMA, and ultra-fast differential dynamic calorimetry (Flash DSC). High stiffness and strength of biocomposites in comparison to neat green PE-HD indicate very good compatibility of the constituents. Stiffness of the samples without SEBS-g-MA is slightly higher than that of the samples with SEBS-g-MA. The thermal stability of biocomposites is for all samples drastically higher as compared to neat green PE-HD. The melting (Tm) and crystallization (Tc) temperatures of the biocomposites are shifted to higher temperatures. Incorporation of SEBS-g-MA together with hemp fiber into the matrix enhances strength, stiffness, impact strength and rises thermal stability. The novel biocomposites are suitable for applications such as technical parts, which require higher stiffness and thermal stability as compared to neat green PE-HD.

References

N. Malhotra, K. Sheikh, S. Rani, A Review on Mechanical Characterization of Natural Fiber Reinforced Polymer Composites, Journal of Engineering Research and Studies, Vol. 3 (2012) 75−80.

K. P. Ashik, S. R. Sharma, A review of mechanical properties of natural fiber reinforced hybrid polymer composites, Journal of minerals and materials characterization and engineering, Vol. 4 (2015) 420−426.

D. Chandramohan, K. Marimuthu, A Review of Natural Fibers, Arpapress, Vol. 8−2 (2011) 194−206.

H. Ku, H. Wang, N. Pattarachaiyakoop, M. Trada, A review on the tensile properties of natural fibre reinforced polymer composites, Composites Part B Engineering, Vol. 42−4 (2011) 856−873.

A. G. Facca, M. T. Kortschot, N. Yan, Predicting the elastic modulus of natural fibre reinforced thermoplastics, Composites Part A: Applied Science and Manufacturing, Vol. 37−10 (2006) 1660−1671.

A. N. Inul, A. Ashak, Effect of Fiber Loading and Compatibilizer on Rheological, Mechanical and Morphological Behaviors, Open Journal of Polymer Chemistry, Vol. 2 (2012) 31−41.

S. Mohanty, S. K. Nayak, Mechanical and Rheological Characterization of Treated Jute-HDPE Composites with a Different Morphology, Journal of Reinforced Plastics and Composites, Vol. 25−13 (2006) 1419−1439.

N. Othman, H. Ismail, M. Mariatti, Effect of Compatibilizers on Mechanical and Thermal Properties of Bentonite Filled Polypropylene Composites, Polymer Degradation and Stability, Vol. 91−2 (2006) 1761−1774.

S. Mohanty, S. Verma, S. K. Nayak, Dynamic Mechanical and Thermal Properties of MAPE Treated Jute/HDPE Composites, Composites Science and Technology, Vol. 66−3/4 (2006) 538−547.

A. F. Vargas, V. H. Orosco, F. Rault, S. Giraud, E. Devaux, B. L. López, Influence of Fiber-Like Nano-fillers on the Rheological, Mechanical, Thermal and Fire Properties of Polypropylene: An Application to Multi-Filament Yarn, Composites: Part A, Vol. 41−12 (2010) 1797−1806.

M. Modesti, A. Lorenzetti, D. Bon, S. Besco, Thermal Behavior of Compatibilised Polypropylene Nano-composite: Effect of Proces-sing Condition, Polymer Degradation and Stability, Vol. 91−4 (2006) 672−680.

P. W. Balasuriya, L. Ye, Y. W. Mai, Mechanical Properties of Wood Flake Polyethylene Composites. Part I: Effects of Processing Methods and Matrix Melt Flow Behavior, Composites Part A: Applied Science and Manufacturing, Vol. 32−5 (2001) 619−629.

R. M. Roweel, A. M. Tillman, R. Simonson, A Simplified, Procedure for the Acetylation of Hardwood and Softwood Flakes for Flakeboard Production, J. Wood Chem. Tech, Vol. 6 (1986) 427.

M. Pracella, M. Minhaz-Ul Haque, V. Alvarez, Functionalization, Compatibilization and Properties of Polyolefin Composites with Natural Fibers, Polymers, Vol. 2−4 (2010) 554−574.

O. M. Jazani, A. Arefazer, M. H. Beheshy, Study on the effect of processing conditions on the mechanical properties of PP/PC/SEBS ternary blends using Taguchi experimental analysis, e-Polymers, 117 (2010) 1−14.

R. Huang, X. Xu, S. Lee, Y. Zhang, B.J. Kim, Q. Wu, High Density Polyethylene Composites Reinforced with Hybrid Inorganic Fillers: Morphology, Mechanical and Thermal Expansion Performance, Materials, 6 (2013) 4122−4138.

J. E. K. Schawe, Influence of processing conditions on polymer crystallization measured by fast scanning DSC, Therm Anal Calorim, 116, (2010) 1165−1173.

G. V. Poel, D. Istrate, A. Magon, V. Mathot, Performance and calibration of the Flash DSC 1, a new, MEMS-based fast scanning calorimeter, Therm Anal Calorim, Vol. 110 (2012) 1533−1546.

H. Jena, M. K. Pandit, A. K. Pradhan, Study the Impact Property of Laminated Bamboo-Fibre Composite Filled with Cenosphere, International Journal of Environmental Science and Development, Vol. 3−5 (2012) 456−459.

E. Lezak, Z. Kulinski, R. Masirek, E. Piorkowska, M. Pracella, K. Gadzinowska, Mechanical and thermal properties of green polylactide composites with natural fillers, Macromol. Biosci., Vol. 8 (2008) 1190−1200.

R. Karnani, M. Krishnan, R. Narayan, Biofiber-reinforced polypropylene composites. Polym. Eng. Sci, Vol. 37 (1997) 476−483.

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Published

2018-02-12

Issue

Vol. 8 No. 1 (2017): Contemporary Materials VIII-1

Section

Articles