EMI Shielding Characteristics of Electrically Conductive Polymer Blends of PS/PANI in Microwave and IR Region

Shakir, M. Fayzan; Rashid, Iqra Abdul; Tariq, Asra; Nawab, Yasir; Afzal, Ayesha; Nabeel, Muhammad; Naseem, Ahmad; Hamid, Usama

doi:10.1007/s11664-019-07631-7

Cited by 54 publications

(21 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…PAni doped with formic acid was used to prepare polystyrene (PS)/PAni by solution process [130]. Films of around 250 µm was analysed in the frequency range from 9 to 18 GHz.…”

Section: Solution/dispersion Methodologymentioning

confidence: 99%

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

2021

View full text Add to dashboard Cite

The development of sophisticated telecommunication equipment and other electro-electronic devices resulted in a kind of electromagnetic pollution that affects the performance of other equipment as well as the health of human beings. Intrinsically conducting polymers (ICP), mainly polyaniline and polypyrrole, have been considered as promising candidates for applications in efficient electromagnetic interference shielding (EMI) due to their ease of preparation, light weight, good conductivity and corrosion resistance. One of the important advantages of these materials is the capability to interact with the EM radiation through both absorption and reflection mechanisms thus enlarging the field of application. In this context, this review article describes a recent overview of the existing methods to produce intrinsically conducting polymers and their blends for electromagnetic shielding application. Additionally, it highlights the relationship between preparation methods reported in the literature with the structure and properties, such as electrical conductivity, electromagnetic shielding effectiveness (EMI SE), complex permittivity and permeability of these materials. Furthermore, a brief theory related to the electromagnetic mechanism and techniques for measuring the microwave absorbing properties are also discussed.

show abstract

“…PAni doped with formic acid was used to prepare polystyrene (PS)/PAni by solution process [130]. Films of around 250 µm was analysed in the frequency range from 9 to 18 GHz.…”

Section: Solution/dispersion Methodologymentioning

confidence: 99%

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

2021

View full text Add to dashboard Cite

show abstract

“…The physical mechanisms of EMR absorption should be similar to those proposed in [20] since it considered composite films of the same thicknesses (250 μm) and with a similar PANI content (40 mas. %) in a dielectric binder, polystyrene.…”

Section: Emr Absorption Measurementmentioning

confidence: 84%

“…The physical mechanisms of EMR absorption should be similar to those proposed in [20] since it considered composite films of the same thicknesses (250 µm) and with a similar PANI content (40 mas.%) in a dielectric binder, polystyrene. However, a direct comparison of the values of the absorption coefficients is not entirely correct due to the different frequency ranges of measurements (0.05-2 GHz and 9-18 GHz) and different measurement techniques (air-coaxial line and CPW).…”

Section: Emr Absorption Measurementmentioning

confidence: 93%

“…PANI nanofibers coatings showed an efficiency of electromagnetic-interference shielding of up to 63 dB in that same frequency range [19]. Films of conductive polymeric blends of polystyrene and PANI provided a shielding efficiency of up to 45 dB in a frequency range of 9-18 GHz [20]. PANI provided a low-percolation threshold (0.58 wt.%), high-electrical conductivity, and high-shielding efficiency of composites using carbon nanotubes [21].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and Characterization of Polyaniline-Based Composites for Electromagnetic Compatibility of Electronic Devices

et al. 2020

View full text Add to dashboard Cite

Polyaniline-based composites designed to ensure the electromagnetic compatibility of electronic devices were obtained. The surface morphologies of the obtained films were studied using optical and electron microscopy. The electrical resistivity of polyaniline (PANI) films were measured at various thicknesses. For films of various compositions and various thicknesses, the frequency dependencies of the complex dielectric permittivity, in the range of 100–2000 kHz, as well as the electromagnetic radiation (EMR) absorption coefficient in the frequency range 0.05–2 GHz were obtained. It was found that flexible gelatin-PANI composite films with a thickness of 200–400 μm, a bending radius of about 5 cm, and a real part of complex permittivity of not more than 10 provide an EMR absorption coefficient of up to 5 dB without introducing additional EMR absorbing or reflecting fillers. The resulting gelatin-PANI composite films do not possess a through electrical conductivity and can be applied directly to the surface of protected printed circuit boards.

show abstract

“…Farklı polimer malzemelerin fiziksel yöntemlerle harmanlanarak hedef kullanıma yönelik optimum özelliklere sahip yeni polimerik malzemelerin geliştirilmesi hem endüstriyel anlamda hem de bilimsel çalışmalarda ilgi çeken bir konu olmuştur. Polimer harmanlama ile ilgili yapılan çalışmalar incelendiğinde ise bu çalışmalarda genellikle maliyetlerin düşürülmesi [1,2], işlenebilirliğinin artırılması [1,2], mekanik özelliklerin optimizasyonu [3][4][5] ya da UV dayanımı [6,7], elektriksel iletkenlik [8,9], şekil hafıza özelliği [10,11] gibi fonksiyonel özelliklerin sağlanabilmesinin amaçlandığı görülmektedir. Çok fazlı polimer harmanların nihai özellikleri ise kullanılan polimerik bileşimlerin özellikleri kadar bu fazlar arası yapışma/uyum ve oluşan harmanın morfolojik özellikleri tarafından da belirlenmektedir [1,2].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Polioksimetilen (POM) / polipropilen (PP) harmanlarının uyumlaştırılması ve mekanik, reolojik ve katı-hal sünme özelliklerinin incelenmesi

Kaşgöz

2020

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

 PP / POM blends were prepared in different compositions with and without compatibilizer.  Morphological, rheological, solid state creep and viscoelastic properties of blends were examined  Optimum compatibilizer concentration was determined The preparation of polymer blends is one of the most important methods to develop specific-purposes polymeric products. POM/PP blends are also prepared in order to provide a cost advantage in POM based parts production and to eliminate the basic disadvantages of POM, such as releasing of aldehyde gas during processing, low impact, and thermal resistance. In this study, POM/PP blends with and without compatibilizer were prepared and detailed morphological, rheological and mechanical properties of the prepared samples were investigated. Also, changing morphology with sample composition was observed and optimum compatibilizer ratio was determined. Finally, short and long-term creep properties are examined in detail and data on deformations that may occur in the case of long-term uses were inferred. Variation of morphological, mechanical and creep properties of the samples were summarized in the graphical abstract given below. Figure A. Morphological, mechanical and tensile creep properties of the samples Purpose: Compatibilization of PP/POM blends and determination of the optimum compatibilizer ratio Theory and Methods: All samples were prepared as granule form by extrusion method. Morphological, rheological, mechanical and creep tests were carried out by Scanning electron microscope, dynamic rotational rheometer, universal test machine and dynamic mechanic analyzes, respectively. Results: Analyses indicate that co-continues phase morphology could be obtained by the sample of PP-50 containing equal amount of POM and PP. It is also shown that improvements in elastic modulus and creep resistance are the highest in the case of the compatibilizer concentration was 10-15 phr, and improvements in these parameters started to disappear in case of compatibilizer concentration is 20 phr. From these results, it has been concluded that optimum benefit can be achieved with the use of PPgMA at a rate of 10-15 phr. Conclusion: It has been concluded that optimum benefit can be achieved with the use of PPgMA at a rate of 10-15 phr

show abstract

EMI Shielding Characteristics of Electrically Conductive Polymer Blends of PS/PANI in Microwave and IR Region

Cited by 54 publications

References 18 publications

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

Conducting Polymeric Composites Based on Intrinsically Conducting Polymers as Electromagnetic Interference Shielding/Microwave Absorbing Materials—A Review

Synthesis and Characterization of Polyaniline-Based Composites for Electromagnetic Compatibility of Electronic Devices

Polioksimetilen (POM) / polipropilen (PP) harmanlarının uyumlaştırılması ve mekanik, reolojik ve katı-hal sünme özelliklerinin incelenmesi

Contact Info

Product

Resources

About