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Agarose-guar gum assisted synthesis of processable polyaniline composite: morphology and electro-responsive characteristics

机译：琼脂糖-瓜尔胶辅助合成的可加工聚苯胺复合材料：形态和电响应特性

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摘要

The present communication reports the development of processable polyaniline (PANI) in the film form via agarose-guar gum (A-G) assisted in situ polymerization of aniline using potassium dichromate as an oxidant. The network structure of A-G not only provides the mechanical support to polyaniline, but also a microporous template, which allows the reinforcement of PANI into nanostructures with an interpenetrated polymer network between PANI and A-G, as evidenced by optical microscopy and SEM. The FTIR and TGA analysis confirms the formation of an agarose-guar gum-polyaniline composite (AG- PANI) having hydrogen bonding interactions. The A-G-PANI film has better adherence property on the glass substrate as compared with PANI. The A-G- PANI composite shows appreciable DC conductivity in the range of 10(-3)-10(-2) S cm(-1) and electrochemical activity, having oxidation-reduction transitions corresponding to polyaniline. It exhibits both ionic and electronic conductivity as confirmed by EIS. The electro-responsive characteristics exhibited by the novel A-G- PANI composite make it a promising electrode material for the construction of chemical sensors and biosensors.
机译：本来文报道了使用重铬酸钾作为氧化剂通过琼脂糖-瓜尔胶（A-G）辅助苯胺原位聚合的薄膜形式可加工聚苯胺（PANI）的开发。 A-G的网络结构不仅为聚苯胺提供了机械支撑，而且还提供了微孔模板，这可以通过PANI和A-G之间的互穿聚合物网络将PANI增强为纳米结构，这由光学显微镜和SEM证明。 FTIR和TGA分析证实了具有氢键相互作用的琼脂糖-瓜尔胶-聚苯胺复合材料（AG-PANI）的形成。与PANI相比，A-G-PANI膜在玻璃基板上具有更好的粘附性。 A-G-PANI复合材料在10（-3）-10（-2）S cm（-1）范围内表现出可观的直流电导率，并且具有电化学活性，具有与聚苯胺相对应的氧化还原转变。经EIS证实，它既具有离子导电性，又具有电子导电性。新型A-G-PANI复合材料表现出的电响应特性使其成为用于化学传感器和生物传感器构造的有前途的电极材料。

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