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Dynamic mechanical properties of high density polyethylene and teak wood flour composites

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Abstract

The dynamic mechanical properties of high density polyethylene (HDPE) and teak wood flour (TWF) composites at varying volume fraction (Φ f) of TWF from 0.00 to 0.32 have been studied. In HDPE/TWF composites, storage modulus (E′) decreased at Φ f = 0.05, then increases with Φ f; however, values were lower than HDPE up to Φ f = 0.16, due to a pseudolubricating effect of filler. Loss modulus (E″) values were higher than HDPE in β and α relaxation regions while in γ relaxation region values were marginally equal to HDPE. Tan δ value decreases with Φ f which may be due to enhanced amorphization and decreased crystallinity of HDPE. In presence of maleic anhydride grafted HDPE (HDPE-g-MAH), E′ values were lower than HDPE/TWF composites. In HDPE/TWF/HDPE-g-MAH, E″ were slightly higher than HDPE/TWF due to slippage of HDPE chains facilitated by the extent of degradation of coupling agent. Tan δ were higher for both systems than the rule of mixture.

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Acknowledgments

Authors are thankful to the Council of Scientific & Industrial Research (CSIR) for research grant and Senior Research Fellowship to one of them (Kamini Sewda).

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  1. Centre for Polymer Science and Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India

    Kamini Sewda & S. N. Maiti

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  1. Kamini Sewda
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Correspondence to S. N. Maiti.

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Sewda, K., Maiti, S.N. Dynamic mechanical properties of high density polyethylene and teak wood flour composites. Polym. Bull. 70, 2657–2674 (2013). https://doi.org/10.1007/s00289-013-0941-0

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