High performance elastomer blend based on maleated natural rubber and hydroxyl-terminated polydimethylsiloxane | ||
| Egyptian Journal of Chemistry | ||
| Volume 66, Issue 13, December 2023, Pages 1469-1477 PDF (971.47 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2023.208162.7916 | ||
| Author | ||
| Heba Kandil* | ||
| Polymers and Pigments Department, National Research Centre, Cairo, 12622, Egypt. | ||
| Abstract | ||
| In an attempt to improve the mechanical and thermal properties of natural rubber (NR) in order to expand its range of application, this work aims to prepare a high performance elastomer blend (MNR- PDMS) of it with hydroxyl terminated polydimethylsiloxane (PDMS-OH). The elastomer blend (MNR-PDMS) was prepared by first modifying the surface of NR with maleic anhydride and then blending it with PDMS-OH using a laboratory roll mill. A sulfur-based curing system was used to cure the blend. Different loadings of PDMS-OH (2, 3, 4 phr) were used to determine the optimum one. Fourier transform infrared spectroscopy (FTIR) was used to characterize the structure of MNR-PDMS elastomer blends. The cure characteristics, mechanical and thermal properties of the MNR-PDMS elastomer blends were studied in detail. Moreover, the surface morphologies of the prepared MNR-PDMS elastomer blends were studied using scanning electron microscopy (SEM). The results showed a remarkably improvement in the mechanical and thermal properties of the prepared MNR-PDMS elastomer blends compared to the unmodified vulcanized natural rubber, and 2 phr was the optimal loading to obtain elastomer with superior mechanical properties. | ||
| Keywords | ||
| Natural rubber; Polydimethylsiloxane; Blend; Mechanical properties; Thermal properties | ||
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