Robust Biocomposite Film of Polylactic Acid and Ferroferric Oxide as a Radar Absorbing Material

IF 1 Q4 CHEMISTRY, MULTIDISCIPLINARY

Indonesian Journal of Chemistry Pub Date : 2023-04-26 DOI:10.22146/ijc.79089

Rafles Sinaga, W. B. Kusumaningrum, Y. Taryana, W. Fatriasari, Zuratul Ain Abdul Hami, L. Suryanegara, H. Holilah, Y. Darma

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Abstract

The polymer/ferroferric oxide (Fe3O4) foam and aerogel composites generally exhibit superior radar absorptivity performance. However, these composites have poor mechanical and thermal properties. This study manufactured a polylactic acid (PLA)/Fe3O4 bio-composite and evaluated the radar absorptivity, thermal, and mechanical properties of radar-absorbing material. The composites were prepared using a solvent casting method to mix PLA and Fe3O4 at varying concentrations, followed by evaporation, oven drying, and hot pressing into a film. Thermogravimetric analysis showed that the decomposition temperature of the PLA/Fe3O4-5% composite occurred at around 306 °C, which shifted to a lower decomposition temperature of PLA. The addition of 25 wt.% Fe3O4 improved the tensile modulus of neat PLA from 2.92 to 3.55 GPa. The vector network analyzer demonstrated that the addition of Fe3O4 at 25% improved the reflection loss of PLA from –5.17 to -25.83 dB at a thickness of 3 mm, with energy absorbed by 99.74% at frequency position 10.58 GHz. These results demonstrated that PLA/Fe3O4 composites have great potential in radar-absorbing practical applications.

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聚乳酸-氧化铁生物复合膜雷达吸波材料研究

聚合物/氧化铁(Fe3O4)泡沫和气凝胶复合材料通常具有优异的雷达吸收性能。然而，这些复合材料具有较差的机械和热性能。本研究制备了聚乳酸(PLA)/Fe3O4生物复合材料，并评估了雷达吸波材料的雷达吸收率、热性能和机械性能。采用溶剂铸造法将PLA和Fe3O4以不同浓度混合，然后蒸发、烘箱干燥、热压成膜制备复合材料。热重分析表明，PLA/Fe3O4-5%复合材料的分解温度在306℃左右，PLA的分解温度较低。25 wt.% Fe3O4的加入使纯PLA的拉伸模量从2.92 GPa提高到3.55 GPa。矢量网络分析仪表明，在厚度为3 mm时，25% Fe3O4的加入使PLA的反射损耗从-5.17 dB提高到-25.83 dB，在10.58 GHz频率处能量吸收提高了99.74%。这些结果表明PLA/Fe3O4复合材料在实际雷达吸波应用中具有很大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Indonesian Journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

2.30

自引率

11.10%

发文量

106

审稿时长

15 weeks

期刊介绍： Indonesian Journal of Chemistry is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including educational chemistry, applied chemistry, and chemical engineering.