Pro-active networks from degradable acetals (PANDAs) obtained via thiol-ene photopolymerization offer control over network architecture, crosslink chemistry and density, and network structure for tunable degradation profiles. These networks are comprised of degradable acetal linkages, which release aldehyde byproducts upon hydrolysis. These acetals can be incorporated directly into the polymer backbone, resulting into total degradation of the network upon hydrolysis, or as pendant groups to the backbone, leaving an intact network with potentially useful mechanical properties upon degradation. Pendant group and main chain acetal incorporation is achieved either through cyclic and acyclic acetals, respectively. A library of acetals was synthesized for incorporation into networks with pendant and main chain acetal architectures. These networks were characterized for mechanical properties and degradation profiles to elucidate structure-property relationships to explore further network tunability.

Cyclic versus acyclic acetal-based monomers: Using monomer design and thiol-ene photopolymerization to tailor network architecture and degradation profiles

255th National Meeting (2018)

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