Articles written in Bulletin of Materials Science

    • Thermal stability and flame-retardant characteristic of irradiated LDPE and composites


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      Magnesium hydroxide (MH) and alumina trihydrate (ATH) are extensively consumed as fillers in polyolefins to fabricate naturally responsive cables. Halogen-free wires, and especially cross-linked or thermoplastic elastomers, arefurther prevalent in worldwide use. The limited oxygen index (LOI), cone calorimeter, smoke density and thermogravimetry (TGA) experiments explain the thermal decomposition, flame-retardant and physical characteristics of samples. Results from studies of TGA, smoke emission and LOI testers showed that the thermal strength and flame-retardant characteristics of the samples containing MH compared with corresponding specimens containing ATH have superior thermal stability. The flame-retardant and heat resistance characteristics of samples were improved due to irradiation and the development of cross-linking bonds in the polymer framework. The results of the smoke density experiment show that adding MH to low-density polyethylene (LDPE) results in the lowest smoke density associated with LDPE and LDPE/ATH compounds. This study proved that the inclusion of MH and irradiation of specimens caused a greater thermal strength and also a superior flame-retardant polymeric product compared with the inclusion of ATH to similar irradiated specimens. These successes are useful and appropriate specifically for cable companies to deliver halogen-free flame-retardant cable materials.

    • Influence of graphene oxide on the mechanical, thermal and roughness of polyethersulphone


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      Polyethersulphone (PES) is a prominent engineering plastic and its characteristics must be increased because of its promise functions in the aviation, vehicle industries and even sports fields. In this study, PES, and PES/grapheneoxide (GO) composites are organized using extrusion blending methods. In this study, GO loading is suggested to increase PES composites’ mechanical characteristics, dimensional strength and cryogenic engineering applications. The dynamic mechanical analysis displays that the loss and storage modulus of composites successfully increase with the GO inclusion, suggesting that the GO loading causes a powerful interfacial contact among the PES structure. The optimum GO loading for developing overall composite mechanical efficiency is 0.5 wt%. It has been shown that GO inclusion improves the cryogenic mechanical characteristics. Besides, the cryogenic mechanical characteristics of PES and its composites at –70°C have been seen to be much superior to those at room temperature. The impact of GO loadings on the morphology and efficiency of the composites was studied by scanning electron microscopy, X-ray diffraction, Fourier-transform infrared spectroscopy and atomic force microscopy.

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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