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Controlled synthesis of metallic iron nanoparticles and their magnetic hyperthermia performance in polyaniline composite nanofibers

机译：金属铁纳米粒子的控制合成及其在聚苯胺复合纳米纤维中的磁热疗性能

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摘要

Electrospun magnetic iron/polyaniline nanofibers with applicable heating performance in an. AC magnetic field were developed. A new and low-cost method was introduced to synthesize metallic iron (Fe-0) nanoparticles with uniform size distribution. The Fe-0 nanoparticles were synthesized in an aqueous environment at room temperature with the assistance of polyvinylpyrrolidone and sodium citrate to tailor their particle sizes ranging from 10 to 20 nm. The experimental results showed. that regulating the. free iron ions present in the. solution is critical for obtaining Fe-0 nanoparticles with narrow size distribution. The Fe-0 nanoparticles were subsequently incorporated with conductive polyaniline (PANI) to fabricate Fe-0/PANI/ polycaprolactone nanofibers using an. electrospinning technique. The resultant composite nanofibers have controlled fiber diameters and also show electrochemical redox properties originating from the PANI polymer. The heating performance test concluded that both. eddy current loss from PANI and. Neel relaxation loss of magnetic Fe-0 nanoparticles can contribute to the. power dissipation of the prepared composite nanofibers. The optimal heating performance can be obtained by adjusting the composition of Fe-0 nanoparticles and PANI in nanofibers.
机译：电纺磁铁/聚苯胺纳米纤维，具有适用的加热性能。交流磁场是开发的。引入了一种新的和低成本的方法，以合成具有均匀尺寸分布的金属铁（Fe-0）纳米颗粒。在室温下在室温下在聚乙烯吡咯烷酮和柠檬酸钠的辅助下合成Fe-0纳米颗粒，以定制其粒度范围为10至20nm。实验结果表明。那个调节。自由铁离子存在于。溶液对于获得具有窄尺寸分布的Fe-0纳米颗粒至关重要。随后将Fe-0纳米颗粒用导电聚苯胺（PANI）掺入，使用A.静电纺丝技术。所得复合纳米纤维具有控制的纤维直径，并且还显示出源自PANI聚合物的电化学氧化还原性能。加热性能测试结束了两者。来自Pani和Pani的涡流损失。磁性Fe-0纳米粒子的Neel弛豫损失可能导致磁力Fe-0纳米颗粒。制备的复合纳米纤维的功率耗散。通过在纳米纤维中调节Fe-0纳米颗粒和PANI的组成来获得最佳加热性能。

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