New approach to hybrid materials: Functional sub-micrometer core/shell particles coated with NiS clusters by γ-irradiation |
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Authors: | Wei-Jun Liu Yan-Mei Wang De Wang Zhi-Cheng Zhang |
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Affiliation: | Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China |
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Abstract: | Functional sub-micrometer core/shell hybrid particles coated with inorganic components have many promising applications as new materials based on their multiphase structures with unusual features. Herein we demonstrate a novel approach to produce such particles with potential applications in the fields of magnetic materials. PSt seed latex was prepared through emulsion polymerization. Core-shell P(St-co-Am) particles with polyacryamide (PAm)-rich shell were formed through interfacial-initiated seeded emulsion polymerization. Then spherical P(St-co-AM)/NiS sub-micrometer composites were successfully prepared by the reaction of nickelous sulfate (NiSO4) and thioacetamide (CH3CSNH2) under 60Co γ-irradiation at ambient temperature and pressure. P(St-co-AM)/NiS hybrid particles were confirmed with electron microscopy, X-ray diffraction and X-ray photo-electron spectroscopy. The properties of P(St-co-Am) hybrid particles were studied with UV-vis spectroscopy, photoluminescence spectroscopy and magnetic hysteresis loop analysis. |
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Keywords: | Core/shell Hybrid Interfacial-initiated polymerization |
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