Synthesis and Thiol-Ene Photopolymerization of Bio-Based Hybrid Aromatic-Aliphatic Monomers Derived from Limonene, Cysteamine and Hydroxycinnamic Acid Derivatives.

ABSTRACT: Three novel bio-based monomers were synthesized through an amidation reaction involving allylated derivatives of coumaric, ferulic and phloretic acid and a diamine obtained from a thiol-ene coupling reaction between limonene and cysteamine. The monomers containing the enone bond of the cinnamic moiety underwent photoisomerization and photocycloaddition reactions upon UV light irradiation. All three monomers were photocured via thiol-ene photopolymerization using a glycerol-derived trifunctional thiol, resulting in fully bio-based poly(amide-thioether)s. The polymers derived from monomers that contain the enone bond exhibited glass transition (T_g) temperatures of 85 °C when a stoichiometric ratio of the thiol was used, whereas polymers in which an excess of thiol was used exhibit

SUBMITTER: Acosta Ortiz R 

PROVIDER: S-EPMC11644351 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature