Preparation of Photocoated Polysiloxane Nanoparticles from 3-Mercaptopropyl Trimethoxysilane with Furan Substitues by the Photoinitiated Thiol-Ene Reaction

Adstract -Using one-pot synthesis, polysiloxane nanoparticles were successfully prepared from 3-mercaptopropyl trimethoxysilane. Next, the nanoparticles were photo-coated with furfuryl methacrylate by photo-initiated Thiol-Ene reaction for grafting furan substitutes on the surface of inorganic cores. In this process, polysiloxane core/poly(furfuryl methacrylate) shell nanoparticles were prepared at different irradiation times, and then their characteristic, morphological and thermal properties were investigated. Fourier transform infrared and solid-state C-13 and Si-29 nuclear magnetic resonance spectroscopies confirmed the successful photo-coating of the surfaces of nanoparticles. The size of coated nanoparticles prepared by irradiation for 24 h was measured as 186 nm in ethanol by dynamic light scattering, while the average diameter of 100 randomly selected pristine nanoparticles were determined at 42.8 nm by transmission electron microscopy. The coated polysiloxane nanoparticles were investigated by X-ray photoelectron spectroscopy and scanning electron microscopy, which revealed that they have the spherical core-shell structure.

Automated summary

This study successfully synthesized polysiloxane nanoparticles and coated them with furfuryl methacrylate through a photo-initiated reaction, forming a core-shell structure. The successful coating of the nanoparticles' surface was confirmed using various analytical techniques, and the coated nanoparticles were found to have a larger size. The morphology and structure of the coated polysiloxane nanoparticles were evaluated.