Preparation and properties of colloidal silica-filled natural rubber grafted with poly(methyl methacrylate)
| Autor: | Thuong Nghiem Thi, Seiichi Kawahara, Yusof Nurul Hayati, Hanh Nguyen Thi Ha, Huong Dao Van, Ha Cao Hong |
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| Rok vydání: | 2021 |
| Předmět: |
Vinyltriethoxysilane
Materials science Polymers and Plastics Colloidal silica technology industry and agriculture macromolecular substances General Chemistry equipment and supplies Condensed Matter Physics Poly(methyl methacrylate) body regions Contact angle Colloid chemistry.chemical_compound surgical procedures operative Natural rubber Chemical engineering chemistry visual_art Materials Chemistry visual_art.visual_art_medium Copolymer Methyl methacrylate |
| Zdroj: | Polymer Bulletin. 79:6011-6027 |
| ISSN: | 1436-2449 0170-0839 |
| Popis: | Colloidal silica-filled deproteinized natural rubber (DPNR) grafted with poly(methyl methacrylate) (PMMA) (DPNR-graft-PMMA/silica) was prepared and characterized. DPNR-graft-PMMA/silica was prepared by graft copolymerization of NR latex with MMA and tert-butyl hydroperoxide/tetraethylenepentamine as initiators, followed by the addition of silica precursor, i.e., vinyltriethoxysilane (VTES). Various amounts of colloidal silica were introduced by varying VTES concentrations accordingly. The resulting DPNR-graft-PMMA/silica sample was analyzed through Fourier transformed infrared and nuclear magnetic resonance (NMR) spectroscopy. PMMA was successfully grafted on NR particles, and colloidal silica particles productively generated in DPNR-graft-PMMA latex. Properties of DPNR-graft-PMMA/silica, i.e., tensile strength and hardness, were significantly improved than those of DPNR. Low water contact angles of DPNR-graft-PMMA and DPNR-graft-PMMA/silica indicated the polar characteristic of colloidal silica and PMMA particles, enhancing the compatibility of those components in DPNR-graft-PMMA/silica. |
| Databáze: | OpenAIRE |
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