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Semi-renewable Polyamides Containing Disulfide Bonds: Syn-thesis, Degradation, Self-Healing, and Triboelectric Properties

Ecotoxicology 2025
Pavel S. Kulyabin, Tianhuai Xu, Yogeshwar D. More, Harini Sampathkumar, Ketan Pancholi, O Le Page, Chloe Rennie, Lea Hämmerling, Kelly Mônica Marinho e Lima, Eli Zysman Colman, Jin‐Chong Tan, Amit Kumar

Summary

Researchers synthesized novel semi-renewable polyamides containing disulfide bonds using bio-derived fatty acid diamines, then demonstrated that these elastomeric polymers can self-heal and degrade via light or chemical reactions, while also functioning as triboelectric nanogenerators capable of harvesting energy from friction.

We report here the synthesis, degradation, and properties of polyamides containing disulfide bonds. The polyamides have been prepared using a two-step melt polycondensation process from 4,4'-dithiodibutyric acid and bio-derived Pri-amineTM. The degradation of these polymers has been investigated using a combination of tools, such as visible light pho-tocatalysis, UV-mediated degradation, and disulfide-thiol metathesis reactions. The chemical, physical, and mechanical properties of these polymers have also been studied. The disulfide-containing polymers exhibit elastomeric and self-healing properties while showing high thermal stability. Furthermore, the novel application of these unique tribopositive polymers as self-repairable triboelectric nanogenerators for energy harvesting has also been demonstrated.

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