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- 저자 : Ahmed G. El-Shamy (검색결과 1 건)
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Bandar A. Al-Asbahi,Saif M.H. Qaid,Ahmed G. El-Shamy 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.100 No.-
How to gain excellent bendable, easily-processable,flexible and high conducting materials withmaintaining their brilliant electromagnetic shielding functions has become a great challenge, whichhinders its potential applications. In this regard, a polymeric nanocomposite based on telluride (Te)nanorods embedded into poly(3,4-ethylene-dioxythiophene):poly (styrenesulphonate) (Te/PEDOT:PSS)films have been applied for the electromagnetic interference (EMI) wave shielding for thefirst time. Te/PEDOT:PSS shields with high Te dispersion, excellent adhesion property, good distribution, highcompatibility and high anisotropic conductivity (s// = 87.87 5 and s?= 36. 78 3 S/cm at 20 wt.%) havea brilliant shielding effectiveness SET = 60.88 dB at 12 GHz for 20 wt.%. The dielectric constants of theshields show an exponential decay behavior with the giga-hertz frequency regime (1 12 GHz). The e0 > 1improves with increasing the Te content due to the growth in the interfacial polarization and the freecharge carrier’s concentrations inside the shield. The main mechanism beyond shielding effectiveness isthe absorption. The impact of 0.1 M of various functionalized (benzene BSA, p-toluene TSA and ChomporCSA) sulfonic acid on the s//, s? and SET values has significantly studied by treating the (20 wt.% Te/PEDOT:PSS) shield with these acids. It has been found that the increase in the anisotropicsBSA > sTSA > sCSA is reflected by the increase in SET (BSA) > SET (TSA) > SET (CSA) due to the planarstructure of BSA and TSA acids. This study offers an excellent bendable, easily-processable,flexible,conducting and brilliant absorber of EM wave based on Te/PEDOT:SS nanocomposite that can be rankedas one of the highest shields. Finally, it has been expected that this nanocomposite to be applied inbiological, EM shields, wearable and electronic devices at an affordable cost.
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