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Solid Polymer Electrolytes Based on Polylactic Acid Nanofiber Mats Coated with Polypyrrole
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-12-07 , DOI: 10.1002/mame.202000584 Fernando Gisbert Roca 1 , Abel García‐Bernabé 2 , Vicente Compañ Moreno 2 , Cristina Martínez‐Ramos 1 , Manuel Monleón Pradas 1, 3
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-12-07 , DOI: 10.1002/mame.202000584 Fernando Gisbert Roca 1 , Abel García‐Bernabé 2 , Vicente Compañ Moreno 2 , Cristina Martínez‐Ramos 1 , Manuel Monleón Pradas 1, 3
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The production of electroconductive nanofiber membranes made from polylactic acid (PLA) coated with polypyrrole (PPy) is investigated, performing a scanning of different reaction parameters and studying their physicochemical and dielectric properties. Depending on PPy content, a transition between conduction mechanisms is observed, with a temperature‐dependent relaxation process for samples without PPy, a temperature‐independent conduction process for samples with high contents of PPy and a combination of both processes for samples with low contents of PPy. A homogeneous and continuous coating is achieved from 23 wt% PPy, observing a percolation effect around 27 wt% PPy. Higher wt% PPy allow to obtain higher conductivities, but PPy aggregates appear from 34% wt% PPy. The high conductivity values obtained for electrospun membranes both through‐plane and in‐plane (above 0.05 and 0.20 S cm–1, respectively, at room temperature) for the highest wt% of PPy, their porous structure with high specific surface area and their thermal stability below 140 °C make them candidates for many potential applications as solid polymer electrolytes in, for example, batteries, supercapacitors, sensors, photosensors, or polymer electrolyte membrane fuel cells (PEMFCs). In addition, the biocompatibility of PLA‐PPy membranes expand their potential applications also in the field of tissue engineering and implantable devices.
中文翻译：
基于聚吡咯涂层的聚乳酸纳米纤维毡的固体聚合物电解质
研究了由涂有聚吡咯（PPy）的聚乳酸（PLA）制成的导电纳米纤维膜的生产，进行了不同反应参数的扫描并研究了它们的理化和介电性能。根据PPy的含量，观察到了传导机理之间的过渡，对于不含PPy的样品，温度依赖于弛豫过程;对于含PPy较高的样品，依赖于温度的传导过程;对于含低PPy的样品，这两种过程结合在一起。 PPy。从23 wt％的PPy获得均匀且连续的涂层，观察到大约27 wt％的PPy的渗滤效果。较高wt％的PPy允许获得较高的电导率，但是从34％wt％的PPy中会出现PPy聚集体。–分别在室温下为–1）以实现最高重量百分比的PPy，其具有高比表面积的多孔结构以及140°C以下的热稳定性使其成为许多潜在应用的候选，例如在电池中用作固体聚合物电解质，超级电容器，传感器，光电传感器或聚合物电解质膜燃料电池（PEMFC）。此外，PLA-PPy膜的生物相容性还扩展了其在组织工程和可植入设备领域的潜在应用。
更新日期：2021-02-15
中文翻译：
基于聚吡咯涂层的聚乳酸纳米纤维毡的固体聚合物电解质
研究了由涂有聚吡咯（PPy）的聚乳酸（PLA）制成的导电纳米纤维膜的生产，进行了不同反应参数的扫描并研究了它们的理化和介电性能。根据PPy的含量，观察到了传导机理之间的过渡，对于不含PPy的样品，温度依赖于弛豫过程;对于含PPy较高的样品，依赖于温度的传导过程;对于含低PPy的样品，这两种过程结合在一起。 PPy。从23 wt％的PPy获得均匀且连续的涂层，观察到大约27 wt％的PPy的渗滤效果。较高wt％的PPy允许获得较高的电导率，但是从34％wt％的PPy中会出现PPy聚集体。–分别在室温下为–1）以实现最高重量百分比的PPy，其具有高比表面积的多孔结构以及140°C以下的热稳定性使其成为许多潜在应用的候选，例如在电池中用作固体聚合物电解质，超级电容器，传感器，光电传感器或聚合物电解质膜燃料电池（PEMFC）。此外，PLA-PPy膜的生物相容性还扩展了其在组织工程和可植入设备领域的潜在应用。
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