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<p>Polydimethylsiloxane (PDMS) is widely used for making flexible waterproof strain sensors, which are often stretched in watery environments. In this study, we used molecular dynamics (MD) simulations to explore the effect of stretching on the anti-permeability of PDMS. The results show that stretching could increase the water permeability of PDMS, however, within a certain simulated time range (250&#xa0;ps), PDMS can still maintain its waterproofing ability within 30% strain. The interaction energy between water molecules and the PDMS substrate increases with strain. These findings provide insight into the performance of PDMS under mechanical stress in aqueous environments.</p> Graphical abstract <p></p>

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Molecular dynamics study of the anti-permeability performance of PDMS under tensile stress

  • 期刊论文

  • 发表日期：

    2025年5月28日

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  • Shilong Cheng,
  • Cheng Zhang,
  • Haolin Dai,
  • Chengji Zheng,
  • Ningbo Liao

摘要

Polydimethylsiloxane (PDMS) is widely used for making flexible waterproof strain sensors, which are often stretched in watery environments. In this study, we used molecular dynamics (MD) simulations to explore the effect of stretching on the anti-permeability of PDMS. The results show that stretching could increase the water permeability of PDMS, however, within a certain simulated time range (250 ps), PDMS can still maintain its waterproofing ability within 30% strain. The interaction energy between water molecules and the PDMS substrate increases with strain. These findings provide insight into the performance of PDMS under mechanical stress in aqueous environments.

Graphical abstract