Gablier, Alexandra published the artcileRates of transesterification in epoxy-thiol vitrimers, Product Details of C17H28O8S4, the main research area is epoxy thiol vitrimer transesterification elastomer thermal mech property.
Vitrimers, an important subset of dynamically crosslinked polymer networks, have many technol. applications for their excellent properties, and the ability to be re-processed through plastic flow above the so-called vitrification temperature We report a simple and efficient method of generating such adaptive crosslinked networks relying on transesterification for their bond exchange by utilizing the ‘click’ chem. of epoxy and thiols, which also has the advantage of a low glass transition temperature We vary the chem. structure of thiol spacers to probe the effects of concentration and the local environment of ester groups on the macroscopic elastic-plastic transition. The thermal activation energy of transesterification bond exchange is determined for each chem. structure, and for a varying concentration of catalyst, establishing the conditions for the optimal, and for the suppressed bond exchange. However, we also discover that the temperature of elastic-plastic transition is strongly affected by the stiffness (dynamic rubber modulus) of the network, with softer networks having a much lower vitrification temperature even when their bond-exchange activation energy is higher. This combination of chem. and phys. control factors should help optimize the processability of vitrimer plastics.
Soft Matter published new progress about Activation energy. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Product Details of C17H28O8S4.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts