Microstructural and thermal properties of fluoroelastomer/acidic surface modified carbon nanotube nanocomposites

Javad Heidarian; Aziz Hassan

doi:10.1002/pc.23532

journal article·2016-12

Microstructural and thermal properties of fluoroelastomer/acidic surface modified carbon nanotube nanocomposites

Javad Heidarian, Aziz Hassan

Polymer Composites· Volume 37· Issue 12

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Source abstract

Abstract

Acid surface modified carbon nanotube (MCNT)‐, carbon nanotube (CNT)‐filled fluoroelastomer (FE), and unfilled‐FE were prepared (MCNT/FE, CNT/FE, and FE). Dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC) showed that the glass transition temperature (T_g) of MCNT/FE is less than that of CNT/FE and FE. The storage modulus of CNT/FE is higher than that of MCNT/FE over the whole temperature range. Storage modulus in rubbery state is higher in the case of MCNT/FE when compared to FE, however, in glassy state, it is slightly higher. For MCNT/FE at glassy and rubbery state, loss modulus is less than that of CNT/FE. Loss modulus in rubbery states is higher in the case of MCNT/FE compared to FE and in glassy states for both are the same. The DSC, DMA, and X‐ray diffraction (XRD) results confirmed that the FE and filler/FE is partially crystalline mostly in γ‐form. MCNT and CNT together with shear and high temperature, induced γ‐crystallinity in the FE, γ‐phase melting of MCNT/FE is higher than that of CNT/FE and FE. Most probably MCNT/FE obeys behaviors of thin films with high surface energy substrate interactions, while in CNT/FE the substrate surface energy is lower. XRD and DSC showed that MCNT causes more γ‐crystallinity in FE compared to others. Tetrafluoroethylene segments crystals have the degree of crystallinity in the order of CNT/FE > MCNT/FE > FE. The γ–phase crystal size is in the order of FE > CNT/FE > MCNT/FE. XRD, DSC, and DMA results for FE and filler/FE confirmed each other. POLYM. COMPOS., 37:3341–3353, 2016. © 2015 Society of Plastics Engineers

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Research context

Ceramics & glasses Nanomaterials

OpenAlex topics: Polymer Nanocomposites and Properties · Silicone and Siloxane Chemistry · Advanced Sensor and Energy Harvesting Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Polymer and Composite Materials Research Laboratory, Department of Chemistry University of Malaya 50603 Kuala Lumpur Malaysia

Funding

University of Malaya

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