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Preparation of polystyrene/EVA/CaCO3 microspheres using a novel one-pot method via a phase inversion emulsion process.
- Source :
- Journal of Reinforced Plastics & Composites; Aug2024, Vol. 43 Issue 15/16, p843-852, 10p
- Publication Year :
- 2024
-
Abstract
- The polymer/nano-inorganics composite microsphere possesses excellent application prospects, but it is difficult to resolve the problem of the aggregation of nano-inorganic particles in polymer and the affinity between inorganics and polymer matrix. In this study, the preparation and characterization of polystyrene (PS)/ethylene vinyl acetate copolymer (EVA)/CaCO<subscript>3</subscript> microspheres fabricated via a novel phase inversion emulsion process are described. By this one-pot method, the PS/EVA/CaCO<subscript>3</subscript> microspheres are obtained by firstly converting styrene monomer containing EVA and nano CaCO<subscript>3</subscript> into droplets dispersed in water with help of emulsifiers and a following polymerization. Because the inorganic nanoparticles are ultrasonically dispersed in liquid monomer mixture before the polymerization, the aggregation of nano-inorganic particles could be prevented to a great extent. The EVA is designed to enhance toughness of polystyrene matrix and increase the affinity between polymer and inorganic particles. The morphological structure of PS/EVA/CaCO<subscript>3</subscript> microspheres is that nano CaCO<subscript>3</subscript> particles are embedded both in the interior and on the surface of the microspheres. The micro-sized PS/EVA/CaCO<subscript>3</subscript> microspheres showed a significantly improved mechanical property and a better heat resistance. This technique also offers the possibility for fabricating many kinds of new and useful polymer/inorganic microspheres with tailored performance by using special monomers and inorganic particles. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 07316844
- Volume :
- 43
- Issue :
- 15/16
- Database :
- Complementary Index
- Journal :
- Journal of Reinforced Plastics & Composites
- Publication Type :
- Academic Journal
- Accession number :
- 178718032
- Full Text :
- https://doi.org/10.1177/07316844231197260