FAU study shows that the cross-linking between the polymer molecules is a key fracture in soft fracture mechanics

Soft materials like rubber or silicone tear easily under tensile stress. In SoftFrac we are looking for ways to make such materials more stable. In a current study, we have shown that it depends, at least partly, on how stable the crosslinked bonds are between the polymer molecules. If the crosslinks are too loose, this is just as detrimental to stability as if they are too strong. Our study also used complex computer simulations. The findings may contribute towards developing high-tech plasters for securely closing wounds without stitches. Stable soft materials are also of interest for robotics or for creating stretchable electronics in items of clothing, known as wearables.

Link to the FAU Outreach article: https://www.fau.eu/2024/12/20/news/researchers-aim-to-make-soft-elastic-material-more-tear-resistant/