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Spherical shape poly(M‐POSS) micro/nano hybrid latex particles: One‐step synthesis and characterization
Author(s) -
Kibar Güneş
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49241
Subject(s) - materials science , chemical engineering , ostwald ripening , thermogravimetric analysis , emulsion polymerization , polyvinylpyrrolidone , polymerization , scanning electron microscope , fourier transform infrared spectroscopy , nanoparticle , sodium dodecyl sulfate , radical polymerization , polymer chemistry , polymer , nanotechnology , composite material , chemistry , organic chemistry , engineering
This research introduces for the first time a simple one‐step synthesis method based on emulsion polymerization to obtain spherical shape poly(Methacryl‐Polyoctahedral Silsesquioxanes) “poly(M‐POSS)” micro/nano hybrid latex particles through a free radical mechanism. The polymerization parameters such as the ultrasound source, the amount of surfactant sodium dodecyl sulfate (SDS) and the addition of the cosurfactants SDS/polyvinylpyrrolidone K30 (PVP‐K30), and SDS/polyvinyl alcohol (PVA) in emulsion medium were investigated. The morphological, chemical, thermal, and crystalline properties of poly(M‐POSS), as a function of these parameters, were analyzed by means of scanning electron microscope, Fourier‐transform infrared spectroscopy, thermogravimetric analysis, and X‐ray diffraction, respectively. The ultrasound source was found to have no significant effect on the fınal properties of the particles. However, the addition of a cosurfactant plays a major role in the distribution and coagulation of the latex particles. The addition of PVA as a cosurfactant significantly decreased the coalescence behavior of the latex particles, whereas the addition of PVP‐K30 caused Ostwald ripening effect in over‐micron size particles. As a result, the poly(M‐POSS) micro/nano particles were obtained in spherical shape in the size range between 0.2 and 20 μm. They possess both organic and inorganic parts with thermal resistance up to 400°C, which potentially serve as coating or filler additive materials.