Facile preparation of lightweight high-strength biodegradable polymer/multi-walled carbon nanotubes nanocomposite foams for electromagnetic interference shielding

Kuang, Tairong; Chang, Lingqian; Chen, Feng; Yan, Sheng; Fu, Dajiong; Peng, Xiangfang

doi:10.1016/j.carbon.2016.04.052

Cited by 373 publications

(164 citation statements)

References 34 publications

Supporting

Mentioning

157

Contrasting

Order By: Relevance

“…The last few decades have witnessed a huge increase in the use of gigahertz (GHz) electronics and telecommunications devices, which in turn has raised the electromagnetic pollution from these instruments to a level that has never been achieved before , and the main areas of interest includes electronics, communication, aerospace and packaging industries . This in turn justifies the scientific and industrial communities pursuit for novel, low cost, environment friendly and effective electromagnetic interference (EMI) shielding materials for various applications .…”

Section: Introductionmentioning

confidence: 99%

Morphological, dielectric, tunable electromagnetic interference shielding and thermal characteristics of multiwalled carbon nanotube incorporated polymer nanocomposites: A facile, environmentally benign and cost effective approach realized via polymer latex/waterborne polymer as matrix

et al. 2017

View full text Add to dashboard Cite

Recent years have witnessed an increased interest in the designing of composite materials in an uncomplicated and economical route for electromagnetic interference (EMI) shielding applications. Herein we report a simple; user friendly and cost effective method comprising of aqueous emulsion of polypropylene (PP) being used as the polymer matrix to manufacture uniformly and efficiently dispersed multiwalled carbon nanotube (MWCNT) incorporated PP composites with excellent electrical conductivity and EMI shielding potential; making use of non‐conventional fabrication techniques. Scanning electron microscopy (SEM) and field emission SEM (FE‐SEM) analysis revealed the uniform distribution of MWCNT's throughout the PP matrix. The dielectric constant and ac conductivity of the 20 wt% MWCNT incorporated sample showcased few order magnitude increment with the ac conductivity reaching as high as ∼66 S/m. Exemplary EMI shielding effectiveness (EMI SE) of ∼57 dB (S band), ∼47 dB (X band), and ∼44 dB (Ku band) was achieved during this study over a broad range of microwave frequency. The composites illustrated marginally improved thermal stability compared to that of neat PP; and the onset crystallization and crystallization temperatures increased with increasing MWCNT concentration. This simple process can be utilized to prepare fine tuned composites/blends of polypropylene with nanofillers/incompatible polymers easily and effectively. Present work also suggests that designing polymer composites based on matrices dispersed in aqueous media is a promising approach to prepare nanocomposites with high filler loading and tunable properties. POLYM. COMPOS., 39:E1169–E1183, 2018. © 2017 Society of Plastics Engineers

show abstract

Section: Introductionmentioning

confidence: 99%

Morphological, dielectric, tunable electromagnetic interference shielding and thermal characteristics of multiwalled carbon nanotube incorporated polymer nanocomposites: A facile, environmentally benign and cost effective approach realized via polymer latex/waterborne polymer as matrix

et al. 2017

View full text Add to dashboard Cite

show abstract

“…In addition, the measured average thickness of them are 31.5 and 30.8 µm, respectively. Due to the low density and extremely thin thickness, the CNT–cellulose composite films with 10 wt% CNT loadings had pretty high specific EMI SE values of 4205 (MWCNTs) and 7678 dB cm 2 g −1 (SWCNTs), which were much higher than that of MWCNTs/PLLA foam with the same CNT contents and MWCNT–cellulose papers with 13.3 wt% CNT loadings …”

Section: Resultsmentioning

confidence: 98%

High Electromagnetic Interference Shielding Effectiveness of Carbon Nanotube–Cellulose Composite Films with Layered Structures

Xing

Qin

Liu

et al. 2018

Macro Materials & Eng

View full text Add to dashboard Cite

Flexible and electrically conductive carbon nanotube (CNT)–cellulose composite films are fabricated by a green route based on sodium hydroxide/urea aqueous solution. Both single‐walled carbon nanotubes (SWCNTs) and multi‐walled carbon nanotubes (MWCNTs) are investigated as conductive fillers. The microstructure and physical properties of the films are characterized extensively. It is observed that CNTs form layered conductive networks in the cellulose matrices during the drying process. The electromagnetic interference (EMI) shielding effectiveness (SE) of these composite films is also investigated. The results exhibit that the EMI SE of the materials is in accordance with electrical conductivity, which is highly dependent on the CNT loadings. Compared to MWCNT–cellulose composite films, the films with SWCNT show more effectiveness as EMI materials in the frequency range of 12–18 GHz. With SWCNT loading of 10 wt%, the EMI SE can reach 32.5–40 dB. Considering the thickness and density of the material, furthermore, the SWCNT–cellulose film possesses an extremely high specific EMI SE value of about 7678 dB cm2 g−1, which is due to the unique layered structures of CNTs. Thus, these flexible conductive composite films have the potential to be used as high‐efficiency shielding materials against electromagnetic radiation in advanced application fields.

show abstract

“…EMI shielding effectiveness (SE) is an important parameter to evaluate the absolute effectiveness of shielding materials and is strongly dependent on electrical conductivity and thickness of the shielding materials [410]. Materials with high electrical conductivity such as metals, carbon materials and CPs, have been widely used as EMI shielding materials [31,[411][412][413]. Metals have limited applications due to their high mass density, poor flexibility and susceptibility to corrosion.…”

Section: Electromagnetic Interference Shieldingmentioning

confidence: 99%

Recent progress on nanostructured conducting polymers and composites: synthesis, application and future aspects

et al. 2018

View full text Add to dashboard Cite

show abstract

Facile preparation of lightweight high-strength biodegradable polymer/multi-walled carbon nanotubes nanocomposite foams for electromagnetic interference shielding

Cited by 373 publications

References 34 publications

Morphological, dielectric, tunable electromagnetic interference shielding and thermal characteristics of multiwalled carbon nanotube incorporated polymer nanocomposites: A facile, environmentally benign and cost effective approach realized via polymer latex/waterborne polymer as matrix

Morphological, dielectric, tunable electromagnetic interference shielding and thermal characteristics of multiwalled carbon nanotube incorporated polymer nanocomposites: A facile, environmentally benign and cost effective approach realized via polymer latex/waterborne polymer as matrix

High Electromagnetic Interference Shielding Effectiveness of Carbon Nanotube–Cellulose Composite Films with Layered Structures

Recent progress on nanostructured conducting polymers and composites: synthesis, application and future aspects

Contact Info

Product

Resources

About