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Nanostructured cigarette wrapper encapsulated PDMS‐RGO sandwiched composite for high performance EMI shielding applications
Author(s) -
De Anurima,
Bera Ranadip,
Paria Sarbaranjan,
Karan Sumanta Kumar,
Das Amit Kumar,
Maitra Anirban,
Si Suman Kumar,
Halder Lopamudra,
Ojha Suparna,
Khatua Bhanu Bhusan
Publication year - 2020
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.25536
Subject(s) - materials science , composite number , composite material , nanocomposite , graphene , polydimethylsiloxane , electromagnetic shielding , microwave , electrical conductor , emi , electromagnetic interference , nanotechnology , electronic engineering , physics , quantum mechanics , engineering
Here, we report a unique hybrid sandwich‐type composite structure consisting of waste cigarette wrapper (CW) inserted in polydimethylsiloxane (PDMS) and reduced graphene oxide (RGO) composite matrix that displays a high EMI shielding effectiveness (SE) of ~50.79 dB in the extended Ku‐band. The function of the inserted CW is to facilitate the multiple reflections and heat dissipation as it contains an Al coating. The interior of CW in the composite as well as the three‐dimensional conductive networks of RGO throughout the PDMS matrix facilitates the microwave absorption through conductive dissipation and heat dissipation. Thus, an absorption‐multiple reflection‐absorption pathway is followed due to the combination of three sandwiched layers, that is, PDMS‐RGO, CW, and PDMS‐RGO. The sandwich architecture of the hybrid PDMS nanocomposite containing both CW and RGO displays a superior EMI SE over the nanocomposite that only contains RGO as filler in PDMS matrix. Moreover, the fabricated composite displays a high thermal conductivity which helps to dissipate the radiated microwave energy via a Joule heating effect. Thus, the fabricated lightweight and flexible hybrid composite structure could be an efficient microwave absorber which offers an attractive and cost‐effective alternative approach to metal based conventional EMI shielding materials.