Abstract
A range of tailor-made amphiphilic block copolymers of acrylic acid as a hydrophilic block and styrene as a hydrophobic block, as well as their homo- and random copolymers, were utilized for colloidal stabilization of silica and silicon nanoparticles in their hydrocarbon suspensions. Silicon-containing nanoparticles were synthesized in plasma discharge under intensive ultrasonic cavitation by decomposition of tetraethoxysilane. The influence of the molecular characteristics and architecture of the applied copolymers on the stabilization effect was examined. Random copolymers of styrene and acrylic acid were shown to provide poor stabilization effects, while diblock and triblock copolymers acted as effective suspension stabilizers. As a result of this study, the optimal molecular structure for diblock copolymers and the optimal molecular architecture for triblock copolymers were established. These findings allowed us to conduct a short reconnaissance study of the structure-dependent stabilization effects, opening prospective routes for tunable compatibilizers with stability varied as a function of composition.
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