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A novel approach to prepare self-healing vulcanized natural rubber using tetramethylthiuram disulfide

Polymer Journal volume 55, pages 1097–1102 (2023)Cite this article

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Abstract

A novel and simple approach was developed in the present work to prepare vulcanized natural rubber with high tensile strength and self-healing capability. Solid rubber from high ammonia natural rubber (HANR) was vulcanized using various contents (1.0, 1.5, 2.0, 2.5, and 3.0 phr) of tetramethylthiuram disulfide (TMTD). The vulcanized HANR samples were characterized with Raman spectroscopy, swelling tests, and tensile tests to determine their disulfide/polysulfide ratio, crosslinking density, and tensile stress and strain recoveries, respectively. The optimum TMTD content for rubber vulcanization was from 1.5 to 2.0 phr, and the temperature to achieve the best self-healing performance was 150 °C, during which the tensile strength obtained was approximately 4–6 MPa, with 50–60% stress recovery and 80–95% strain recovery. High tensile strength and good self-healing performance were observed for vulcanized HANR samples with high amounts of disulfide bonds and low crosslinking densities.

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Acknowledgements

This research is funded by the Vietnam Ministry of Education and Training (MOET) under grant number B2022-BKA-19.

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Authors and Affiliations

  1. School of Chemical Engineering, Hanoi University of Science and Technology, No 1 Dai co Viet, Hanoi, Vietnam

    Thuong Thi Nghiem & Ba Lam Nguyen

  2. Faculty of Engineering, Nagaoka University of Technology, 1603-1, Kamitomioka-machi, Nagaoka, Niigata, 940-2188, Japan

    Ba Lam Nguyen, Luu Thanh Huyen & Seiichi Kawahara

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  1. Thuong Thi Nghiem
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  2. Ba Lam Nguyen
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Correspondence to Thuong Thi Nghiem.

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Nghiem, T.T., Nguyen, B.L., Huyen, L.T. et al. A novel approach to prepare self-healing vulcanized natural rubber using tetramethylthiuram disulfide. Polym J 55, 1097–1102 (2023). https://doi.org/10.1038/s41428-023-00818-0

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