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Ferroelectric performance of nylons 6-12, 10-12, 11-12, and 12-12

机译：尼龙6-12,112,11-12和12-12的铁电性能

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摘要

Nylons have great potential for electrical applications requiring high polarizability and low dielectric loss. Recently, the narrow single hysteresis loop with relaxor ferroelectricity and the double hysteresis loop due to antiferroelectricity have been reported in nylon random copolymers, terpolymers, and common even-numbered nylons. Although several studies of ferroelectric nylons have been reported, even-even-numbered and odd-even-numbered nylons have not been sufficiently explored. Here, the ferroelectricity of spin-coated even-even-numbered and odd-even-numbered nylons was investigated. A series of even-even-numbered nylons, including nylons 6-12, 10-12, and 12-12, and an odd-even-numbered nylon, nylon 11-12, were polymerized with 1,10-dodecanedicarboxylic acid (12) and four aliphatic diamines with various methylene units, 1,6-hexanediamine (6), 1,10-decanediamine (10), 1,11-undecanediamine (11), and 1,12-dodecanediamine (12). The obtained nylon polymers were spin coated and then subjected to melt-quenching or thermal annealing followed by quenching. From the X-ray diffraction and the electrical hysteresis loop data, the correlation between the ferroelectricity and the crystal parameters of crystallinity and crystallite size of the gamma crystal phase was investigated. Furthermore, the free volume of the nylon samples was estimated to correlate with the ferroelectricity. Temperature-dependent ferroelectricity was investigated for nylon 10-12. At a high temperature, the nylon samples showed a narrow polarization-electric field hysteresis loop and a rhombus-shaped polarization current-electric field hysteresis loop due to the relaxor ferroelectricity. This behaviour was caused by electrically rotating the nanodomains with weakened hydrogen bonds at higher temperatures.
机译：尼龙对需要高偏热性和低介电损耗的电气应用具有很大的潜力。最近，在尼龙随机共聚物，三元共聚物和共聚的偶数尼龙中报道了具有松弛剂铁电性的窄单滞后环和由于消耗性引起的防冻电池。虽然已经报道了几次铁电尼龙研究，但均未充分探索偶数和偶数编号的尼龙。这里，研究了旋涂的偶数和奇数均尼龙的铁电性。一系列偶数均匀的尼龙，包括尼龙6-12,112和12-12，以及奇数偶数尼龙，尼龙11-12与1,10-十二烷二羧酸聚合（12 ）和四种具有各种亚甲基单元的四种脂族二胺，1,6-己二胺（6），1,10-癸二胺（10），1,11-过癸胺（11）和1,12-十二烷二胺（12）。得到的尼龙聚合物被旋涂，然后进行熔融淬火或热退火，然后淬火。从X射线衍射和电磁回路数据中，研究了铁电性与γ晶相的结晶度和微晶尺寸的晶体参数之间的相关性。此外，估计尼龙样品的自由体积与铁电性相关。研究了尼龙10-12的温度依赖性铁电。在高温下，由于松弛剂铁电性，尼龙样品显示出窄极化电磁场滞后回路和菱形偏振电流电磁场滞后环。通过在较高温度下用较弱的氢键电旋转纳米染色液来引起这种行为。

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  • 来源
    《RSC Advances》 |2020年第27期|共11页
  • 作者

    Yanaka Ayumi; Sakai Wataru; Kinashi Kenji; Tsutsumi Naoto;

  • 作者单位

    Kyoto Inst Technol Doctors Program Mat Chem Grad Sch Sci &

    Technol Sakyo Ku Kyoto 6068585 Japan;

    Kyoto Inst Technol Fac Mat Sci &

    Engn Sakyo Ku Kyoto 6068585 Japan;

    Kyoto Inst Technol Fac Mat Sci &

    Engn Sakyo Ku Kyoto 6068585 Japan;

    Kyoto Inst Technol Fac Mat Sci &

    Engn Sakyo Ku Kyoto 6068585 Japan;

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