Improved adhesion property and electromagnetic interference shielding effectiveness of electroless Cu-plated layer on poly(ethylene terephthalate) by plasma treatment

2002 ◽  
Vol 84 (7) ◽  
pp. 1369-1379 ◽  
Author(s):  
Kyung Wha Oh ◽  
Dong Jun Kim ◽  
Seong Hun Kim
Keyword(s):  
Plasma Treatment ◽  
Electromagnetic Interference ◽  
Ethylene Terephthalate ◽  
Adhesion Property ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Electromagnetic Interference Shielding Effectiveness

Polypyrrole and silver particles coated poly(ethylene terephthalate) nonwoven composite for electromagnetic interference shielding

2017 ◽  
Vol 52 (10) ◽  
pp. 1353-1362 ◽  
Author(s):  
Meryem Kalkan Erdoğan ◽  
Meral Karakışla ◽  
Mehmet Saçak
Keyword(s):  
Electromagnetic Interference ◽  
Ethylene Terephthalate ◽  
Electromagnetic Shielding ◽  
Scanning Electron Micrographs ◽  
Silver Particles ◽  
Shielding Effectiveness ◽  
Poly Ethylene Terephthalate ◽  
Ag Particles ◽  
Poly Ethylene ◽  
Electromagnetic Shielding Effectiveness

A conductive polypyrrole/silver/poly(ethylene terephthalate) composite was prepared by the polymerization of pyrrole with AgNO3 oxidant in the presence of poly(ethylene terephthalate) nonwoven. The effect of AgNO3/pyrrole mol ratio and concentrations of the reactants was investigated on the polypyrrole/silver content and surface resistivity of the composite. The deposition of shiny metallic Ag particles was observed on the composite during the polymerization of pyrrole. The weight fraction of the Ag particles in the polypyrrole/silver contents of the composite was determined by thermogravimetric analysis. It was observed from scanning electron micrographs that the morphology of the polypyrrole/silver particles changed with the increase in the polypyrrole/silver contents of the composite. The electromagnetic shielding effectiveness as well as the absorption loss, reflection loss with the values of absorbance and reflectance, showing their contributions to the electromagnetic shielding effectiveness value of the composite were determined within the frequency range of 15–3000 MHz. An absorption dominant shielding was obtained with the value of 13–15.5 desibel for double coated composite.

Electromagnetic interference shielding effectiveness of polypyrrole-silver nanocomposite films on silane-modified flexible sheet

2021 ◽  
pp. 095400832110645
Author(s):  
Karim Benzaoui ◽  
Achour Ales ◽  
Ahmed Mekki ◽  
Abdelhalim Zaoui ◽  
Boudjemaa Bouaouina ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Electromagnetic Interference ◽  
Nanocomposite Films ◽  
Electrical Characteristics ◽  
Shielding Effectiveness ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Silver Nanocomposite ◽  
Electromagnetic Interference Shielding Effectiveness ◽  
Emi Se

The conventional electromagnetic interference (EMI) shielding materials are being gradually replaced by a new generation of supported conducting polymer composites (CPC) films due to their many advantages. This work presents a contribution on the effects of silane surface–modified flexible polypyrrole-silver nanocomposite films on the electromagnetic interference shielding effectiveness (EMI-SE). Thus, the UV-polymerization was used to in-situ deposit the PPy-Ag on the biaxial oriented polyethylene terephthalate (BOPET) flexible substrates whose surfaces were treated by 3-aminopropyltrimethoxysilane (APTMS). X-ray Photoelectron Spectroscopy (XPS) analyzes confirmed the APTMS grafting procedure. Structural, morphological, thermal, and electrical characteristics of the prepared films were correlated to the effect of substrate surface treatment. Thereafter, EMI-SE measurements of the elaborated films were carried out as per ASTM D4935 standard for a wide frequency band extending from 50 MHz to 18 GHz. The obtained results confirmed that the APTMS-treated BOPET film exhibit higher EMI shielding performance and better electrical characteristics compared to the untreated film. In fact, a 32% enhancement of EMI-SE was noted for the treated films compared to the untreated ones. Overall, these results put forward the role played by the surface treatment in strengthening the position of flexible PPy-Ag supported films as high-performance materials in electronic devices and electromagnetic interference shielding applications.

Sign in / Sign up

Export Citation Format

Share Document