Zhang, Jiancheng published the artcilePreparation of novel UV-cured methacrylate hybrid materials with high thermal stability via thiol-ene photopolymerization, COA of Formula: C17H28O8S4, the main research area is POSS methacrylate thiol ene click reaction photocuring thermomech property.
Methacryloxypropyl-polyhedral oligomeric silsesquioxane (MAP-POSS) was photopolymerized with the tri- or tetra-functional thiol monomer in different stoichiometry. A novel inorganic-organic methacrylate hybrid material with highly cross-linked network and high performance was synthesized by UV-initiated thiol-ene click chem. SEM-EDAX images and XRD diffractograms showed that no agglomeration of MAP-POSS was observed, indicating MAP-POSS dispersed uniformly in the hybrid materials. Real-time FTIR was employed to monitor the conversion of thiol and methacrylate as a function of irradiation time, and highly thiolated monomer could promote the conversion of methacrylate effectively because of stronger chain propagation capability. The TGA indicated that the hybrid materials had high thermal stability of which the onset decomposition temperature rose to 350°, ∼50° higher than that of the traditional UV-cured epoxy acrylate/triethylene glycol dimethacrylate (EA/TEGDMA, 70:30 weight/weight) resin. The highest glass transition temperature (Tg) of the hybrid materials was 76.2°. Compared with traditional EA/TEGDMA resins, the novel hybrid materials consisted of MAP-POSS had fast curing rate, high mech. properties and thermal stability which made the wider practical applications of UV-cured hybrid materials feasible.
Journal of Materials Science published new progress about Click chemistry. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, COA of Formula: C17H28O8S4.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts