3 research outputs found
Eugenol-Based Siloxane Acrylates for Ultraviolet-Curable Coatings and 3D Printing
To
explore more sustainable, safer UV-curable acrylates, a series
of bio-based acrylates (SIEEA, SIPEEA, and SIDPEEA) are synthesized
from eugenol and siloxanes under mild conditions without any solvent.
The molecular structures of the acrylates are characterized, and the
acrylates exhibit much lower viscosities than a commercial bisphenol
A glycol dimethacrylate (BisGMA) does. The synthesized acrylates can
be well cured under UV radiation to form thin films and thick 3D objects.
The cured acrylates display significantly improved thermal properties
and hydrophobicity and a decreased dielectric constant as low as 3.0
(1 kHz) due to the siloxane backbones. Moreover, they are low in toxicity
with the cytotoxicity value above 80%, which is far lower than that
of BisGMAs. More interestingly, SIEEA is used as a UV-curable ink
and successfully shaped into objects such as chess pieces and a dental
model with a high resolution by 3D printing. To summarize, these eugenol-based
siloxane acrylates can be readily synthesized, showing a good promise
for UV-curable coatings and 3D printing with high thermal stability,
low dielectric constant, and low toxicity