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Effect of ionic liquid segments of copolymer on compatibilization process and dielectric behavior of polylactide/polyvinylidene fluoride blends |
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| Authors: | Ping Wang Zhaopei Cui Xianhai Hu Pei Xu Yunsheng Ding |
| Affiliation: | 1. School of Materials and Chemical Engineering, and Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei, China;2. School of Chemistry and Chemical Engineering, and Anhui Key Laboratory of Advanced Functional Materials and Devices, Hefei University of Technology, Hefei, China;3. School of Materials and Chemical Engineering, and Anhui Province International Research Center on Advanced Building Materials, Anhui Jianzhu University, Hefei, China Anhui Province Engineering Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei, China |
| Abstract: | Biodegradable polylactide (PLA) and polyvinylidene fluoride (PVDF) blends containing the copolymer of PEGMA and 1-vinyl-3-ethylimidazolium bromide (PMI) were prepared, and the effects of ionic liquid segments of PMI on the compatibility of PLA and PVDF were investigated by dielectric relaxation spectroscopy (DRS). PMI can obviously improve the compatibility of PLA and PVDF, compared with the copolymer of PEGMA and vinyl imidazole (PMV). DRS showed that the compatibility of PLA and PVDF was related to the relaxation behavior of the blends, which was identified with Maxwell-Wagner-Sillars (MWS) interfacial polarization. The ε' of PLA/PVDF/PMI blends was much higher than that of PLA/PVDF/PMV blends in the same temperature, resulting from the stimulation of MWS interfacial polarization by the ion mobility of PMI. |
| Keywords: | dielectric properties ionic liquids morphology structure-property relationships |