Flexible, Robust, and Washable Bacterial Cellulose/Silver Nanowire Conductive Paper for High-Performance Electromagnetic Interference Shielding Effectiveness

2021 ◽  
Author(s):  
Jie Wang ◽  
Xiangbo Zhu ◽  
Peixun Xiong ◽  
Junpin Tu ◽  
Zhiwei Yang ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Electromagnetic Interference ◽  
High Performance ◽  
High Efficiency ◽  
Silver Nanowires ◽  
Silver Nanowire ◽  
Shielding Effectiveness ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Electromagnetic Interference Shielding Effectiveness

Uniformly dispersing silver nanowires (AgNWs) in polymer matrices is of paramount importance for developing high-performance electromagnetic interference (EMI) shielding materials. Herein, a new flexible and robust high-efficiency bacterial cellulose (BC)-based...

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.

Tunable electromagnetic interference shielding ability of MXene/chitosan/silver nanowire sandwich films

2021 ◽  
pp. 2151041
Author(s):  
Wei Wang ◽  
Xiaoyu Bing ◽  
Yutong Zhou ◽  
Miaomiao Geng ◽  
Yanhu Zhan ◽  
...  
Keyword(s):  
Thin Films ◽  
Electromagnetic Interference ◽  
Hybrid Composites ◽  
Core Layer ◽  
Structure Design ◽  
Silver Nanowire ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Electromagnetic Interference Shielding Effectiveness ◽  
Emi Se

The structural design of thin films is attracting attention in academia and industry in attempts to improve electromagnetic interference shielding effectiveness (EMI SE). In this study, MXene/chitosan/silver nanowire (AgNW) sandwich films, in which the AgNW core layer was bordered by two MXene/chitosan layers, were fabricated by vacuum-assisted filtration. Because of the interconnected AgNWs in the core layer and the aligned MXene sheets in the MXene/chitosan layers, the electrical conductivity of the sandwich film reached 11,459.1 S/m. Consequently, the sandwich film exhibited an SE value of 82.3 dB. What is more, when both the AgNW and MXene contents were 33.3%, the sandwich film’s EMI SE divided by its thickness was 26,167 dB/cm, which was much superior to the values reported for inorganic hybrid composites and polymer composites filled with hybrid fillers. Such a simple approach was proved to be an effective way for further structure design of thin films in EMI shielding field.

scholarly journals Facile approach for a robust graphene/silver nanowires aerogel with high-performance electromagnetic interference shielding

RSC Advances ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Xiaoting Liu ◽  
Tianrui Chen ◽  
Hao Liang ◽  
Faxiang Qin ◽  
Hui Yang ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Electrical Properties ◽  
Electromagnetic Interference ◽  
High Performance ◽  
Silver Nanowires ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
High Compressive Strength

We report a facile, eco-friendly approach to prepare the robust graphene/silver nanowires aerogel with high compressive strength and excellent EMI shielding performance due to its unique nanostructure and good electrical properties.

Facile fabrication of ultrathin graphene film with ultrahigh electrical conductivity and superb electromagnetic interference shielding effectiveness

2021 ◽  
Vol 9 (1) ◽  
pp. 214-222
Author(s):  
Xiaojing Liu ◽  
Wenyu Wu ◽  
Bin Guo ◽  
Minghao Cui ◽  
Huaxin Ma ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Self Assembly ◽  
Electromagnetic Interference ◽  
Graphene Film ◽  
Shielding Effectiveness ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Graphene Films ◽  
Facile Fabrication ◽  
Electromagnetic Interference Shielding Effectiveness

Graphene films prepared through a self-assembly of graphene oxide and its derivatives have been recently explored for electromagnetic interference (EMI) shielding applications.

Flexible few-layered graphene/poly vinyl alcohol composite sheets: synthesis, characterization and EMI shielding in X-band through the absorption mechanism

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36498-36506 ◽  
Author(s):  
Sandeep K. Marka ◽  
Bashaiah Sindam ◽  
K. C. James Raju ◽  
Vadali V. S. S. Srikanth
Keyword(s):  
Electromagnetic Interference ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Shielding Effectiveness ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Composite Sheet ◽  
Absorption Mechanism ◽  
X Band ◽  
Electromagnetic Interference Shielding Effectiveness

An excellent electromagnetic interference shielding effectiveness of ∼19.5 dB was measured for a 1 mm thick flexible few-layered graphene (FLG)/PVA composite sheet owing to the formation of network-like features by FLG in the PVA matrix.

Layer-structured silver nanowire/polyaniline composite film as a high performance X-band EMI shielding material

2016 ◽  
Vol 4 (19) ◽  
pp. 4193-4203 ◽  
Author(s):  
Fang Fang ◽  
Yuan-Qing Li ◽  
Hong-Mei Xiao ◽  
Ning Hu ◽  
Shao-Yun Fu
Keyword(s):  
Electrical Conductivity ◽  
Electromagnetic Interference ◽  
High Performance ◽  
Composite Films ◽  
Silver Nanowire ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
X Band ◽  
Pani Composite ◽  
Shielding Material

The superiority of layer-structured Ag-NW/PANI composite films over the plain-structured in electrical conductivity and electromagnetic interference shielding.

Ultrathin, flexible and sandwich-structured PHBV/silver nanowire films for high-efficiency electromagnetic interference shielding

2021 ◽  
Author(s):  
Song Yang ◽  
Yue-Yi Wang ◽  
Ying-Nan Song ◽  
Li-Chuan Jia ◽  
Gan-Ji Zhong ◽  
...  
Keyword(s):  
Electromagnetic Interference ◽  
Sandwich Structure ◽  
High Efficiency ◽  
Silver Nanowire ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding

An ultrathin transparent EMI shielding film with sandwich structure including PHBV, AgNWs and PHBV was fabricated. The AgNW layer encapsulated with PHBV can endow the film with high EMI effectiveness and environment stability.

Lightweight and flexible hybrid film based on delicate design of electrospun nanofibers for high-performance electromagnetic interference shielding

Nanoscale ◽  
2019 ◽  
Vol 11 (17) ◽  
pp. 8616-8625 ◽  
Author(s):  
Li Huang ◽  
Jianjun Li ◽  
Yibin Li ◽  
Xiaodong He ◽  
Ye Yuan
Keyword(s):  
Electromagnetic Interference ◽  
High Performance ◽  
Hybrid Film ◽  
Electrospun Nanofibers ◽  
Light Weight ◽  
Shielding Effectiveness ◽  
Emi Shielding ◽  
Electromagnetic Interference Shielding ◽  
Emi Shielding Effectiveness

High-performance electromagnetic interference (EMI) shielding materials possess features of light weight, flexibility and excellent EMI shielding effectiveness.

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