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High dielectric poly(vinylidene fluoride) nanocomposite films with MoS2 using polyaniline interlinker via interfacial interaction
Journal of Materials Chemistry C ( IF 6.4 ) Pub Date : 2017-10-31 00:00:00 , DOI: 10.1039/c7tc03593d
Nirmal Maity 1, 2, 3, 4, 5 , Amit Mandal 1, 2, 3, 4, 5 , Arun K. Nandi 1, 2, 3, 4, 5
Affiliation  

A new route for the synthesis of low cost, flexible, high dielectric constant functional polymer nanocomposite is successfully fabricated by introducing molybdenum disulfide (MoS2) into poly(vinylidene fluoride) (PVDF) using polyaniline (PANI) as an interlinker. The strategy adopted is to exfoliate MoS2 (E-MoS2) by simple sonication of bulk MoS2 in N,N′-dimethyl formamide (DMF) and in situ polymerization of aniline with E-MoS2 in water to produce MoS2–PANI showing novel raspberry type morphology. MoS2–PANI shows good dispersion in PVDF matrix implying strong interaction onto the PVDF interface, and it acts as a nucleating agent for PVDF crystallization. Synergistic nucleating effect of MoS2–PANI onto PVDF led to the formation of dominant polar β-phases in the MoS2–PANI/PVDF (MPF) composite films. With 10% filler content, the MPF material shows 86% polar β-phase PVDF due to its good interaction and dispersion of MoS2–PANI. The maximum increment of dielectric constant (ε′) of that sample is 586 at 102 Hz, which is 42 times higher than that of neat PVDF and it can be well explained by interfacial polarization along with the formation of nanocapacitor network in PVDF matrix. This intriguing synthesis method of MoS2–PANI/PVDF nanocomposite will open up new opportunities for fabricating nanostructured polymer composites to produce high dielectric materials.

中文翻译:

使用聚苯胺交联剂通过界面相互作用与MoS 2的高介电质聚偏二氟乙烯纳米复合薄膜

通过使用聚苯胺(PANI)作为交联剂,将二硫化钼(MoS 2)引入聚偏二氟乙烯(PVDF)中,成功地制造了一种低成本,柔性,高介电常数功能聚合物纳米复合材料的合成新路线。采取的策略是去角质的MoS 2(E-MOS 2通过本体的MoS的简单超声处理)2ÑÑ ' -二甲基甲酰胺(DMF),并在原位与E-的MoS苯胺的聚合2在水中,以产生的MoS 2 - PANI表现出新颖的覆盆子型形态。硫化钼2–PANI在PVDF基质中显示出良好的分散性,这意味着在PVDF界面上有很强的相互作用,并且它是PVDF结晶的成核剂。MoS 2 -PANI对PVDF的协同成核作用导致在MoS 2 -PANI / PVDF(MPF)复合膜中形成主要的极性β相。MPF材料具有10%的填料含量,由于其良好的MoS 2 -PANI相互作用和分散性,因此具有86%的极性β相PVDF 。该样品的最大介电常数(ε ′)增量在10 2时为586Hz,是纯PVDF的42倍,可以通过界面极化以及在PVDF基质中形成纳米电容器网络来很好地解释。MoS 2 -PANI / PVDF纳米复合材料的这种有趣的合成方法将为制造纳米结构的聚合物复合材料以生产高介电材料开辟新的机会。
更新日期:2017-11-16
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