MICROHARDNESS STUDY ON ITO AND G60 INCORPORATED PI TERNARY COMPOSITE FILMS
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Abstract
Property modification by incorporating metalloid within polymeric matrix to form composite thin films has been the area of immense interest. Indium Tin Oxide (ITO) and Graphene (G60) had attracted considerable attention over the past few years because of their wide range of useful properties including electrical conductivity. Taking this in view ITO and G60 incorporated within PI matrix to develop flexible high temperature resistive composite thin films. PI composite thin films incorporating ITO and G60 at various weight ratios were processed using In-situ Generated Inter chain Crosslinking Moieties (IGICM) approach. The microhardness studies have been carried out on composite thin films at various loads to test the plasticization and hardening effects using Vickers microhardness testing. Microhardness study based on the variation of Vickers hardness number (HV) and applied load (L) for composite thin films. The resultant product was imidized up to 350◦C-370◦C to test the ability of the material to endure high temperatures without affecting the host matrix (PI). Thereafter, water absorption behavior of developed composite thin films was carried out to study the hygroscopic nature of PI because a fraction of moisture within composite thin film can alter its whole set of properties. The synergic improvement in microhardness properties is due to the uniform dispersion of ITO and G60 within the PI matrix in macro/ nano dimension.References
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