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Determination of the most efficient form of sulfur for use as a natural rubber curing agent by comparison of physical and thermal attributes of cured rubber

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Abstract

Vulcanization, by creating a three-dimensional cross-linked network, improves the physicalmechanical and thermal properties of elastomers. A popular agent for curing natural rubber (NR) is sulfur. Insoluble sulfur (IS) and rhombic sulfur (RS) are common allotropes of elemental sulfur. In this research, it was observed that the use of the two types of sulfur (IS and RS) gives different results. In terms of cure behavior, tear resistance and hardness, RS-vulcanized NR performed better, whereas in viscosity, tensile strength, aging and compression set, IS-vulcanized NR was better; because of the lack of blooming, IS could replace of rhombic sulfur as the curing agent in certain applications.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Islamic Azad University, Neyshabur Branch, Neyshabur, Iran

    Alireza Motavalizadehkakhky & Hedieh Shahrampour

Authors
  1. Alireza Motavalizadehkakhky
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  2. Hedieh Shahrampour
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Correspondence to Hedieh Shahrampour.

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Motavalizadehkakhky, A., Shahrampour, H. Determination of the most efficient form of sulfur for use as a natural rubber curing agent by comparison of physical and thermal attributes of cured rubber. Pet. Chem. 58, 89–93 (2018). https://doi.org/10.1134/S0965544118010048

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  • DOI: https://doi.org/10.1134/S0965544118010048

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