Synthesis of polydisulphide via iodine oxidation for self-healing applications

Self-healing materials with scratch-healing capabilities have garnered significant attention in recent years. Among the various reversible bonds investigated as healing mechanisms in polymer materials, dynamic disulphide chemistry has been particularly appealing. This study reports the synthesis of...

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Main Authors: Thuy Thu Truong, Le-Thu T. Nguyen
Format: Article
Language:English
Published: Vietnam Ministry of Science and Technology 2025-07-01
Series:Vietnam Journal of Science, Technology and Engineering
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Online Access:https://vietnamscience.vjst.vn/index.php/vjste/article/view/1294
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author Thuy Thu Truong
Le-Thu T. Nguyen
author_facet Thuy Thu Truong
Le-Thu T. Nguyen
author_sort Thuy Thu Truong
collection DOAJ
description Self-healing materials with scratch-healing capabilities have garnered significant attention in recent years. Among the various reversible bonds investigated as healing mechanisms in polymer materials, dynamic disulphide chemistry has been particularly appealing. This study reports the synthesis of a polydisulphide as a healing segment, incorporating reversible disulphide bonds for self-healing applications. The polydisulphide was synthesised through the oxidation of a telechelic mercaptan compound, employing iodine as the oxidising agent. The resulting polydisulphide was characterised by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR). It was then crosslinked with telechelically acrylate end-capped polycaprolactone and a tetrathiol crosslinker via the thiol-acrylate Michael addition reaction, forming a self-mendable network. The network was further characterised using FT-IR, differential scanning calorimetry, optical microscopy, and tensile testing. Optical microscopy confirmed the network's scratch-healing ability, while tensile testing demonstrated a strength recovery of 62% after scratching and subsequent healing at 100oC for 24 hours.
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spelling doaj-art-b38d16a31a2d40dba421a9298fbe5cdc2025-07-25T10:29:56ZengVietnam Ministry of Science and TechnologyVietnam Journal of Science, Technology and Engineering2525-24612615-99372025-07-01Synthesis of polydisulphide via iodine oxidation for self-healing applicationsThuy Thu TruongLe-Thu T. Nguyen Self-healing materials with scratch-healing capabilities have garnered significant attention in recent years. Among the various reversible bonds investigated as healing mechanisms in polymer materials, dynamic disulphide chemistry has been particularly appealing. This study reports the synthesis of a polydisulphide as a healing segment, incorporating reversible disulphide bonds for self-healing applications. The polydisulphide was synthesised through the oxidation of a telechelic mercaptan compound, employing iodine as the oxidising agent. The resulting polydisulphide was characterised by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR). It was then crosslinked with telechelically acrylate end-capped polycaprolactone and a tetrathiol crosslinker via the thiol-acrylate Michael addition reaction, forming a self-mendable network. The network was further characterised using FT-IR, differential scanning calorimetry, optical microscopy, and tensile testing. Optical microscopy confirmed the network's scratch-healing ability, while tensile testing demonstrated a strength recovery of 62% after scratching and subsequent healing at 100oC for 24 hours. https://vietnamscience.vjst.vn/index.php/vjste/article/view/1294iodineMichael thiol-acrylate additionpolydisulphideselfhealing
spellingShingle Thuy Thu Truong
Le-Thu T. Nguyen
Synthesis of polydisulphide via iodine oxidation for self-healing applications
Vietnam Journal of Science, Technology and Engineering
iodine
Michael thiol-acrylate addition
polydisulphide
selfhealing
title Synthesis of polydisulphide via iodine oxidation for self-healing applications
title_full Synthesis of polydisulphide via iodine oxidation for self-healing applications
title_fullStr Synthesis of polydisulphide via iodine oxidation for self-healing applications
title_full_unstemmed Synthesis of polydisulphide via iodine oxidation for self-healing applications
title_short Synthesis of polydisulphide via iodine oxidation for self-healing applications
title_sort synthesis of polydisulphide via iodine oxidation for self healing applications
topic iodine
Michael thiol-acrylate addition
polydisulphide
selfhealing
url https://vietnamscience.vjst.vn/index.php/vjste/article/view/1294
work_keys_str_mv AT thuythutruong synthesisofpolydisulphideviaiodineoxidationforselfhealingapplications
AT lethutnguyen synthesisofpolydisulphideviaiodineoxidationforselfhealingapplications