RESUMO
For the first time, the effectiveness of triazolinedione (TAD) click chemistry onto aliphatic polycarbonates (APC) is demonstrated. Statistic copolymers carrying click-reactive conjugated diene (in a ratio of 10%) are synthesized via organocatalyzed ring-opening polymerization. The highly efficient click reaction of TADs carrying simple butyl and phenyl functions are confirmed by 1 H-NMR and DSC. Network formation using a bivalent TAD is also performed and simply characterized by DSC. This post-polymerization functionalization of biocompatible and biodegradable APC pave the way to easy and versatile "on-demand" materials design.
Assuntos
Cimento de Policarboxilato/química , Triazóis/química , Materiais Biocompatíveis/química , Varredura Diferencial de Calorimetria , Química Click , Teste de Materiais , Estrutura MolecularRESUMO
We report biomass-derived, shape-memory materials prepared via simple reactions, including "grafting from" ATRP and TAD click chemistry. Although the biomass, including plant oils and cellulose nanocrystals, has heterogeneous chemical structures in nature, these materials exhibit excellent multiple shape-memory properties toward temperature, water, and organic solvents, which are comparable to petroleum counterparts. The work presented herein provides burgeoning opportunities to design the next-generation, low-cost, biomass-prevalent, green materials for niche applications.