Epoxy-acrylic core-shell particles by seeded emulsion polymerization
| Autor: | Liang Chen, Jui-Ching Lin, Joseph D. Harris, Greg Meyers, Liang Hong, Michael J. Radler |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Emulsion polymerization 02 engineering and technology Epoxy Scanning transmission X-ray microscopy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Surfaces Coatings and Films Biomaterials chemistry.chemical_compound Colloid and Surface Chemistry Chemical engineering chemistry Methacrylic acid visual_art Phase (matter) Microscopy Polymer chemistry visual_art.visual_art_medium Methyl methacrylate 0210 nano-technology Dispersion (chemistry) |
| Zdroj: | Journal of colloid and interface science. 473 |
| ISSN: | 1095-7103 |
| Popis: | We developed a novel method for synthesizing epoxy-acrylic hybrid latexes. We first prepared an aqueous dispersion of high molecular weight solid epoxy prepolymers using a mechanical dispersion process at elevated temperatures, and we subsequently used the epoxy dispersion as a seed in the emulsion polymerization of acrylic monomers comprising methyl methacrylate (MMA) and methacrylic acid (MAA). Advanced analytical techniques, such as scanning transmission X-ray microscopy (STXM) and peak force tapping atomic force microscopy (PFT-AFM), have elucidated a unique core-shell morphology of the epoxy-acrylic hybrid particles. Moreover, the formation of the core-shell morphology in the seeded emulsion polymerization process is primarily attributed to kinetic trapping of the acrylic phase at the exterior of the epoxy particles. By this new method, we are able to design the epoxy and acrylic polymers in two separate steps, and we can potentially synthesize epoxy-acrylic hybrid latexes with a broad range of compositions. |
| Databáze: | OpenAIRE |
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