Greeting, I am currently study on TPU for coatings. The healing capabilities of TPU is from the presence of the hydrogen bonding in the structure or with the other as well? Is there a other key factor (structure/bonding) that need to be considered which contributed to the healing properties? Based on my literature study that what the input that I gained from previous paper. I am also utilize the AI website in order to give the general ideas regarding the issue.

"Self-Healing Ability: The dynamic nature of hydrogen bonding, coupled with TPU's ability to soften and reform, contributes to its self-healing ability. The material can recover from damage by allowing hydrogen bonds to reestablish and polymer chains to reorganize."_ statement from Ai website.

Is there any other suggestion for testing/characterization that can identify on the healing properties that can be proved such as using FTIR. Hope can give a picture on what I would like to discuss with your expert/experience. Lets start the discussion :)