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Effect of P[MPEGMA-IL] on morphological evolution and conductivity behavior of PLA/PCL blends

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Abstract

Dielectric relaxation spectroscopy (DRS) was used to investigate the effect of morphological evolution on conductivity behavior of PLA/PCL blends containing P[MPEGMA-IL]. The morphology of blends changes from sea-island morphology into co-continuous morphology with increasing P[MPEGMA-IL] content. P[MEPGMA-IL] could mainly localize in PCL domains and expand to the interface layer between the PLA and PCL phase because of the low viscosity of PCL phase and the high affinity of MEPGMA groups for both polymer phases. The dielectric results were discussed in terms of α relaxation that corresponds to normal and segmental mode movement, interfacial polarization that corresponds to interfacial aggregation of charge carriers, and ac conductivity that originates from conductive network of mobile charge carriers. Co-continuous morphology and high ions concentration lead to the enhancement of segment movement and ion conductive channel in PCL phase, which correspond to high conductivity and low activation energy of PLA/PCL/8P[MEGMA-IL] blend.

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Funding

This research was supported by the National Natural Science Foundation of China (51603060) and the Fundamental Research Funds for the Central Universities (JD2016JGPY0001).

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Authors and Affiliations

  1. Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, 230009, China

    Ping Wang, Yiyang Zhou, Pei Xu & Yunsheng Ding

  2. School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei, 230601, China

    Ping Wang

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  1. Ping Wang
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Correspondence to Pei Xu.

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Wang, P., Zhou, Y., Xu, P. et al. Effect of P[MPEGMA-IL] on morphological evolution and conductivity behavior of PLA/PCL blends. Ionics 25, 3189–3196 (2019). https://doi.org/10.1007/s11581-019-02871-3

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  • DOI: https://doi.org/10.1007/s11581-019-02871-3

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