Fabrication, surface characterization and electrical properties of hydrogen irradiated nanocomposite materials

IF 2.7 4区材料科学 Q3 CHEMISTRY, PHYSICAL Surface Innovations Pub Date : 2023-08-07 DOI:10.1680/jsuin.23.00030

N. Alsaif, A. Atta, E. Abdeltwab, M. Abdel-Hamid

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Abstract

Flexible PVA/PANI/Ag nanocomposite consisting of polyaniline (PANI) and silver nanoparticles (AgNPs) with Polyvinyl alcohol (PVA) were successful fabricated using casting method to applied in storage energy devices. The surface characteristics of the composite films were analyzed using XRD, DSC, and FTIR techniques. The estimated crystallite size of AgNPs is 11.7 nm increased to 15.3 nm by enhancing Ag from 2% to 4%. In addition, the morphology of the films is investigated utilizing SEM. The conductivity σdc is improved from 4.8x10−11 S.cm−1 for PVA to 1.3x10−10 S.cm−1 for PVA/PANI and to 1.2x10−9 S.cm−1 for PVA/PANI/Ag. Furthermore, by increasing the temperature value, the electrical resistance is reduced, besides, the activation energy is modified with addition of PANI and Ag in PVA matrix. The PVA/PANI/Ag are irradiated with hydrogen fluence 0.4x1018, 0.8x1018, and 1.2x1018 ions/cm2. The σac is enhanced from 2.67x10−9 S/cm for PVA/PANI/Ag to 2.02x10−8 S/cm for 0.4x1018 ions/cm2 and to 3.95x10−6 S/cm 1.2x1018 ions/cm2. Moreover, the dielectric constant increased of 0.43 for PVA/PANI/Ag to 0.56, 1.23, and 4.18 when are exposed to 0.4x1018, 0.8x1018, and 1.2x1018 ions.cm−2, respectively. The results showed modifications in electrical characteristics of the the irradiated composite, which open the way for applying these samples in wide range of dielectric applications.

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氢辐照纳米复合材料的制备、表面表征及电学性能

采用浇铸法制备了由聚苯胺（PANI）和银纳米粒子（AgNPs）与聚乙烯醇（PVA）组成的柔性PVA/PANI/Ag纳米复合材料，并将其应用于储能器件。利用XRD、DSC和FTIR技术对复合膜的表面特性进行了分析。AgNP的估计晶粒尺寸为11.7 nm增加到15.3 通过将Ag从2%增强到4%。此外，利用扫描电镜对薄膜的形貌进行了研究。电导率σdc由4.8x10−11提高 S.cm−1（PVA）至1.3x10−10 S.cm−1适用于PVA/PANI和1.2x10−9 PVA/PANI/Ag的S.cm−1。此外，通过提高温度值，电阻降低，此外，在PVA基体中添加PANI和Ag可以改变活化能。PVA/PANI/Ag用氢通量0.4x1018、0.8x1018和1.2x1018照射离子/cm2。σac从2.67x10−9增强 PVA/PANI/Ag的S/cm为2.02x10−8 S/cm，适用于0.4x1018 离子/cm2至3.95x10−6 S/cm 1.2x1018 此外，当暴露于0.4x1018、0.8x1018和1.2x1018时，PVA/PANI/Ag的介电常数从0.43增加到0.56、1.23和4.18 离子。cm−2。结果表明，辐照复合材料的电学特性发生了变化，这为这些样品在广泛的介电应用中开辟了道路。

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来源期刊

Surface Innovations CHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS

CiteScore

5.80

自引率

22.90%

发文量

期刊介绍： The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace. Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.