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Influence of preparation conditions on structural and dielectric properties of PVDF–MoS2 nanotubes composite films

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Abstract

Poly(vinylidene fluoride) composite films with MoS2 nanotubes were prepared from solutions using the doctor blade method and dried under various temperatures. While FTIR-ATR and Raman spectroscopy have revealed that composite films dried at room temperature are homogeneous and crystallize mainly in the γ-phase, a decrease in porosity upon addition of MoS2 has been observed using scanning electron microscopy. Dielectric investigations revealed (i) a decrease from ε’ ∼ 7 in pure polymer to ε’ ∼ 4 in composite with 1 wt% of MoS2, and (ii) a slight increase in ε’ and σ’ values upon further addition of MoS2. Films dried at 110 °C were heterogeneous and FTIR-ATR has shown an increase in α-phase content upon addition of 1 wt% of MoS2. In this case, high values of ε’ ∼ 10 that increased slightly upon increasing amount of MoS2 in the film have been measured. By showing a direct relation between structure and dielectric response, it is suggested that the dielectric properties of poly(vinylidene fluoride)–MoS2 nanotubes composites can be tailored by changing the preparation conditions.

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Acknowledgments

This project was financially supported by Slovenian Research Agency under project 1000-11-310181 and programs P1-0099 and P1-0125 and by Ministry of Education, Science and Sport of Republic of Slovenia and European Social Fund under project PR-05648.

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  1. Condensed Matter Physics Department, Jožef Stefan Institute, Jamova cesta 39, 1000, Ljubljana, SI, Slovenia

    Ana Varlec, Andreja Eršte, Vid Bobnar & Maja Remškar

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  1. Ana Varlec
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  2. Andreja Eršte
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Correspondence to Ana Varlec.

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Varlec, A., Eršte, A., Bobnar, V. et al. Influence of preparation conditions on structural and dielectric properties of PVDF–MoS2 nanotubes composite films. J Polym Res 23, 34 (2016). https://doi.org/10.1007/s10965-016-0930-8

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