TY - JOUR
T1 - Thiol-ene photopolymerization meets azide-alkyne click reactions
T2 - P/N/Si-containing, dual curable eugenol-based hybrid coatings
AU - Ozukanar, Ozge
AU - Çakmakçi, Emrah
AU - Daglar, Ozgun
AU - Durmaz, Hakan
AU - Kumbaraci, Volkan
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/8/17
Y1 - 2023/8/17
N2 - The use of bio-based building blocks for the synthesis of polymers is increasing day by day. Among the bio-based building blocks, eugenol is a highly promising monomer for the preparation of thermoset materials. In this study, we combined thiol-ene photopolymerization (TEP) and thermal azide-alkyne cycloaddition click reactions to prepare eugenol-based thermally stable, P-, N-, and Si-containing networks. To this end, we synthesized a P-containing, eugenol-based monomer bearing azide group and a siloxane compound containing an alkyne group. By mixing these monomers with multifunctional thiols and by utilizing a dual-curing strategy, we managed to obtain optically transparent and thermally stable coatings with excellent adhesion to glass substrates. Thermal stability, optical transmittance, pendulum hardness, solvent resistance, and the adhesion performance of the coatings were evaluated. The gel contents of the thermoset materials were found to be over 95%. At 600 °C, the char yields of the dual-cured coatings were found to be over 30%. Coatings were also found to be resistant to acidic and basic conditions as well as solvents.
AB - The use of bio-based building blocks for the synthesis of polymers is increasing day by day. Among the bio-based building blocks, eugenol is a highly promising monomer for the preparation of thermoset materials. In this study, we combined thiol-ene photopolymerization (TEP) and thermal azide-alkyne cycloaddition click reactions to prepare eugenol-based thermally stable, P-, N-, and Si-containing networks. To this end, we synthesized a P-containing, eugenol-based monomer bearing azide group and a siloxane compound containing an alkyne group. By mixing these monomers with multifunctional thiols and by utilizing a dual-curing strategy, we managed to obtain optically transparent and thermally stable coatings with excellent adhesion to glass substrates. Thermal stability, optical transmittance, pendulum hardness, solvent resistance, and the adhesion performance of the coatings were evaluated. The gel contents of the thermoset materials were found to be over 95%. At 600 °C, the char yields of the dual-cured coatings were found to be over 30%. Coatings were also found to be resistant to acidic and basic conditions as well as solvents.
KW - Azide-alkyne click
KW - Dual-curing
KW - Eugenol
KW - Green chemistry
KW - Thiol-ene photopolymerization
UR - http://www.scopus.com/inward/record.url?scp=85161722626&partnerID=8YFLogxK
U2 - 10.1016/j.eurpolymj.2023.112203
DO - 10.1016/j.eurpolymj.2023.112203
M3 - Article
AN - SCOPUS:85161722626
SN - 0014-3057
VL - 195
JO - European Polymer Journal
JF - European Polymer Journal
M1 - 112203
ER -