Figure 7
From: Magnetic Field Triggered Multicycle Damage Sensing and Self Healing
Model of recoverable strain sensing and self healing in Magpol.
(A) Original: Sample shows high crystallinity, BBS molecules aggregated and nanoparticles form links between the polymer chains. (B) After plastic deformation and failure: a decrease in crystallinity, single BBS molecules formed due to disaggregation (resulting in a colour change). (C) Recovery: shape recovery causes recovery of the original dimensions. Polymer chain entanglement at the failure interface results in self healing BBS aggregates also re-form resulting in recovery of the original colour. Further cycles of strain and recovery follow the same pattern described above.
