Microwave shielding characteristics of thermoplastic/graphene composites with montmorillonite (bentonite) clay addition for improved thermal stability. Issue 3 (11th February 2022)

• Record Type: Journal Article
• Authors: Joseph, Jomy; Koroth Koyadan, Ajith; Sidpara, Ajay M.; Paul, Jinu
• Is Part Of: Polymer-plastics technology and materials. Volume 61:Issue 3(2022)
• Page Start: 283
• Page End: 295
• Publication Date: 2022-02-11
• Subjects: EMI shielding -- Graphene -- Bentonite -- Hybrid nanocomposites -- Thermal stability; Polymers -- Periodicals; Polymerization -- Periodicals; Plastics -- Periodicals; Plastics; Polymerization; Polymers; Periodicals; 668
• DOI: Https://www.tandfonline.com/doi/10.1080/25740881.2021.1982968
• Languages: English
• ISSNs: 2574-0881

Abstract

ABSTRACT: PMMA/graphene/Bentonite and PVC/graphene/Bentonite hybrid composites were prepared by solution casting method. Thermal stability, electrical conductivity and EMI shielding effectiveness in X-band were studied in detail. PVC composite with 5 wt.% Bentonite exhibited an enormous improvement in the thermal stability compared to the PVC/graphene counterpart. However, increase in Bentonite content in the hybrid composites reduced their electrical conductivity and resulted in lower overall shielding effectiveness in X band. The hybrid nanocomposites were found to have a significantly stronger influence of absorption in the overall shielding effectiveness when compared with respective polymer/graphene composites. The detailed microstructural/mechanical characterization elucidates the underlying mechanisms.