Multiple healing in multi-functional polymer composites

In this work, we investigate the formation of self-healing systems that are able to recover more than once more than one (mechanical or other physical) functionality. To this aim composites were created consisting of a polysulfide thermoset rubber matrix having intrinsic self-healing properties filled with thermally/electrically conductive...

Self-healing and mechanochromism of diarylbibenzofuranone-based dynamic covalent polymers

Covalent bonds with the ability to reach an equilibrium state between combination and dissociation under certain conditions have been studied, and systematic method for controlling the structures of compounds and polymers based on these reversible covalent bonds has been spotlighted as dynamic covalent chemistry. In the present study,...

Studying the healing behavior at a microsopic scale

Research in the field of smart materials that exhibit self-repair mechanisms has greatly expanded over the last few years. This is especially true for polymers and polymer composite materials. One class of self-healing polymer materials is the reversible polymer network systems that use dynamic covalent bonds as a means to repair sustained...

Multiple healing in multi-functional polymer composites

In this work, we investigate the formation of self-healing systems that are able to recover more than once more than one (mechanical or other physical) functionality. To this aim composites were created consisting of a polysulfide thermoset rubber matrix having intrinsic self-healing properties filled with thermally/electrically conductive...

On the healing mechanism of sol-gel derived hybrid materials containing dynamic di-sulfide bonds

Sol-gel technology is increasingly being used in coatings for corrosion protection and adhesion improvement. So far, the self-healing concept in sol-gel coatings has only been approached from extrinsic healing perspective (i.e. use of nano and micro carriers of corrosion inhibitors) [1]. Despite the benefits of this approach, the damaged area...

On the healing mechanism of sol-gel derived hybrid materials containing dynamic di-sulfide bonds

Sol-gel technology is increasingly being used in coatings for corrosion protection and adhesion improvement. So far, the self-healing concept in sol-gel coatings has only been approached from extrinsic healing perspective (i.e. use of nano and micro carriers of corrosion inhibitors) [1]. Despite the benefits of this approach, the damaged area...

Olefin metathesis for effective polymer healing via dynamic exchange of strong carbon-carbon bonds

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Basic research on the self-healing functions of concrete mixed with fly ash

In recent studies, it has been recognized that concrete deterioration is accelerated by the growth of fine cracks of a few micron meters in width induced by dry shrinkage and/or freezing damage. There have been great expectations for research on concrete that self-heals these fine cracks. Recent research (for example, Taniguchi et al. in the 3rd...

Atomic scale simulation of oxide and metal film growth

Improvement of wear resistant and tribological properties of materials is of great technological importance and is the main relevance of the current oxide coatings study. Aluminum oxide is especially interesting because of its very rapid self-repair capacity. As a second subject of this thesis, Cu film growth on Ta, a diffusion barrier material,...