Manganese dioxide nanoparticle coated graphene oxide hybrid nanofiller: its effect on structural, thermal, and dielectric properties of polyaniline ternary nanocomposites

IF 2.8 3区化学 Q3 POLYMER SCIENCE

Iranian Polymer Journal Pub Date : 2024-12-08 DOI:10.1007/s13726-024-01432-4

Pooja Mohapatra, Shreelata Behera, Saleja Sahoo, Annada Mishra, Akankshya Panda, Lipsa Shubhadarshinee, Bigyan Ranjan Jali, Aruna Kumar Barick, Priyaranjan Mohapatra

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Abstract

Ocimum sanctum (Tulsi) leaf extract was taken as both reducing and capping agent to synthesize manganese dioxide nanoparticles (MnO₂NPs). The MnO₂NPs coated graphene oxide (MnO₂NPs coated GO) hybrid nanofillers were synthesized using an in situ method. MnO₂NPs coated on GO hybrid nanofillers reinforced polyaniline (PANI) ternary nanocomposites were fabricated by incorporating “MnO₂NPs coated GO hybrid nanofillers” into the polyaniline (PANI) matrix through in situ polymerization. FTIR showed interactions between the components, evidenced by the Mn–O bond and secondary amine group at 507. The absence of the data of ternary nanocomposites is evident due to their insolubility in any solvents. The XRD analysis suggested the successful incorporation of MnO₂NPs-at-GO into the PANI matrix, resulting in reduced crystallinity and strong interfacial interactions without forming any new crystalline phases. The addition of MnO₂NPs-at-GO hybrid nanofillers significantly enhanced the thermal stability of the PANI matrix. SEM revealed changes in nanostructured morphology caused by the presence of MnO₂NPs-at-GO hybrid nanofillers within the PANI matrix by effectively coating MnO₂NPs-at-GO hybrid nanofillers with PANI molecular chains. The dielectric parameters of the PANI/MnO₂-at-GO ternary nanocomposites were significantly altered i.e., both AC conductivity and dielectric permittivity increased, and dielectric loss decreased in comparison with the pristine PANI matrix across the applied frequency region caused by the establishment of interfacial adhesions among MnO₂NPs-at-GO hybrid nanofillers and PANI matrix. This ternary nanocomposite can lead to advanced materials with enhanced structural integrity, thermal stability, and dielectric properties, making them suitable for applications in flexible electronics and energy storage devices. Additionally, these nanocomposites could be utilized in sensors and conductive coatings, benefiting from their improved performance characteristics and multifunctionality.

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二氧化锰纳米颗粒包覆氧化石墨烯杂化纳米填料：对聚苯胺三元复合材料结构、热学和介电性能的影响

以柞树叶提取物为还原剂和封盖剂合成二氧化锰纳米颗粒（MnO2NPs）。采用原位法合成了MnO2NPs包覆氧化石墨烯（MnO2NPs包覆氧化石墨烯）杂化纳米填料。将“MnO2NPs包覆的氧化石墨烯杂化纳米填料”通过原位聚合加入聚苯胺（PANI）基体中，制备了包覆氧化石墨烯杂化纳米填料的MnO2NPs增强聚苯胺（PANI）三元纳米复合材料。FTIR显示了组分之间的相互作用，证明了Mn-O键和仲胺基团在507。由于三元纳米复合材料在任何溶剂中都不溶解，因此没有数据。XRD分析表明，mno2nps - go成功掺入到聚苯胺基体中，导致结晶度降低，界面相互作用强，而没有形成任何新的晶相。MnO2NPs-at-GO杂化纳米填料的加入显著提高了聚苯胺基体的热稳定性。SEM通过有效地将MnO2NPs-at-GO杂化纳米填充物包覆在聚苯胺分子链上，揭示了聚苯胺基体中MnO2NPs-at-GO杂化纳米填充物的纳米结构形态变化。由于MnO2NPs-at-GO杂化纳米填料与PANI基体之间建立了界面粘连，PANI/MnO2-at-GO三元复合纳米材料的介电参数明显改变，即与原始PANI基体相比，在整个应用频率区域内，交流电导率和介电介电常数均增加，介电损耗降低。这种三元纳米复合材料可以产生具有增强结构完整性、热稳定性和介电性能的先进材料，使其适用于柔性电子和储能设备。此外，这些纳米复合材料可用于传感器和导电涂层，受益于其改进的性能特征和多功能性。图形抽象

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来源期刊

Iranian Polymer Journal 化学-高分子科学

CiteScore

4.90

自引率

9.70%

发文量

107

审稿时长

2.8 months

期刊介绍： Iranian Polymer Journal, a monthly peer-reviewed international journal, provides a continuous forum for the dissemination of the original research and latest advances made in science and technology of polymers, covering diverse areas of polymer synthesis, characterization, polymer physics, rubber, plastics and composites, processing and engineering, biopolymers, drug delivery systems and natural polymers to meet specific applications. Also contributions from nano-related fields are regarded especially important for its versatility in modern scientific development.