Thiol-yne elastomers are unique because mechanical properties can be tuned independently from monomer composition through changes in polymerization solvent polarity and pKa of catalyst. This effect can be understood through the controllable ratio of cis to trans alkenes present in the backbone of the polymer. In this work, a series of degradable thiol-yne elastomers was developed from di(3-mercaptopropionate)alkyl esters and alkyl dipropionates. 1,4-cyclohexane dimethanol dipropiolate was found to produce highly crystalline polymers with sub room temperature glass-transition temperatures. Dynamic mechanical analysis was used to probe shape-memory behaviour. This is the first known example that the authors could find of thiol-yne elastomers to exhibit significant crystallinity.

Mechanical properties and degradation of semicrystalline thiol-yne elastomers

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.