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Effect of gamma irradiation on thermal, mechanical and water absorption behavior of LLDPE hybrid composites reinforced with date pit (Phoenix dactylifera) and glass fiber

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Abstract

Date pit/ glass fiber reinforced LLDPE hybrid composites were compounded by single screw extruder and injection molded into dumbbell specimens. The composites were subjected to thermal gravimetric analysis (TGA), tensile testing, flexural study and water absorption analysis. TGA study confirmed the positive hybrid effects of reinforcements on the thermal stability of LLDPE composites. The decrease in weight loss percentage with the addition of glass fiber authenticated the increase in thermal stability. The maximum tensile strength 20.2 ± 0.8 MPa was obtained with 10% date pit and 20% glass fiber. The water-resistant property of hybrid composites reinforced with high percentage of glass fiber was found to be improved in comparison with virgin. The resulting composites were also exposed to different gamma doses (75 and 150 kGy) and the effect is characterized in terms of thermal and mechanical properties. Irradiation of gamma rays under 75 kGy improved the thermal stability and tensile strength than unirradiated and irradiated samples at higher dose (150 kGy).

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Acknowledgements

Gratefully acknowledge the University Grant Commission (UGC), New Delhi for the Senior Research Fellowship (SRF), award no. 21/06/2015 (i) EU-V. The author also acknowledges the Chairman, Kurukshetra University Kurukshetra for building a path to get engage in research.

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  1. Department of Chemistry, Kurukshetra University, Kurukshetra, Haryana, 136119, India

    Kapil Gulati, Sohan Lal, Suresh Kumar & Sanjiv Arora

  2. Department of Chemistry, Dyal Singh College, Karnal, Haryana, 132001, India

    Kapil Gulati

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Correspondence to Sanjiv Arora.

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Gulati, K., Lal, S., Kumar, S. et al. Effect of gamma irradiation on thermal, mechanical and water absorption behavior of LLDPE hybrid composites reinforced with date pit (Phoenix dactylifera) and glass fiber. Polym. Bull. 78, 7019–7038 (2021). https://doi.org/10.1007/s00289-020-03477-w

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