Construction and Regulation of Polymer@Silica Microspheres with Double-Shell Hollow Structures
Microspheres with well-defined hollow structures have been attracting interest due to their unique morphology and fascinating properties. Herein, a strategy for morphology and size control of hollow polymer@silica microspheres is proposed. Multilayer core–shell polymer microspheres, containing subst...
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MDPI AG
2025-02-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/30/4/954 |
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| author | Mingxiu Jiang Yuanyuan Yang Jiawei Feng Zhaopan Wang Wei Deng |
| author_facet | Mingxiu Jiang Yuanyuan Yang Jiawei Feng Zhaopan Wang Wei Deng |
| author_sort | Mingxiu Jiang |
| collection | DOAJ |
| description | Microspheres with well-defined hollow structures have been attracting interest due to their unique morphology and fascinating properties. Herein, a strategy for morphology and size control of hollow polymer@silica microspheres is proposed. Multilayer core–shell polymer microspheres, containing substantial carboxyl groups inside, evolve into microspheres with a 304 nm hollow structure after alkali treatment, which are used to construct hollow polymer@silica microspheres by coating the inorganic layer using the layer-by-layer (LBL) and sol–gel methods, respectively. The inorganic shell thickness of hollow polymer@silica microspheres can be adjusted from 15 nm to 33 nm by the self-assembled layers in the LBL method and from 15 nm to 63 nm by the dosage of precursor in the sol–gel method. Compared to the LBL method, the hollow polymer@silica microspheres prepared via the sol–gel method have a uniform and dense inorganic shell, thus ensuring the complete spherical morphology of the microspheres after calcination, even if the inorganic shell thickness is only 15 nm. Moreover, the hollow polymer@silica microspheres prepared via the sol–gel method exhibit improved compression resistance and good opacity, remaining intact at 16,000 psi and providing the corresponding coating with transmittance lower than 35.1%. This work highlights the morphology regulation of microspheres prepared by different methods and provides useful insights for the design of composites microspheres with controllable structures. |
| format | Article |
| id | doaj-art-ad4530e6821f4e77ace2d50d6e7fa6db |
| institution | DOAJ |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj-art-ad4530e6821f4e77ace2d50d6e7fa6db2025-08-20T03:12:22ZengMDPI AGMolecules1420-30492025-02-0130495410.3390/molecules30040954Construction and Regulation of Polymer@Silica Microspheres with Double-Shell Hollow StructuresMingxiu Jiang0Yuanyuan Yang1Jiawei Feng2Zhaopan Wang3Wei Deng4School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, ChinaSchool of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, ChinaMicrospheres with well-defined hollow structures have been attracting interest due to their unique morphology and fascinating properties. Herein, a strategy for morphology and size control of hollow polymer@silica microspheres is proposed. Multilayer core–shell polymer microspheres, containing substantial carboxyl groups inside, evolve into microspheres with a 304 nm hollow structure after alkali treatment, which are used to construct hollow polymer@silica microspheres by coating the inorganic layer using the layer-by-layer (LBL) and sol–gel methods, respectively. The inorganic shell thickness of hollow polymer@silica microspheres can be adjusted from 15 nm to 33 nm by the self-assembled layers in the LBL method and from 15 nm to 63 nm by the dosage of precursor in the sol–gel method. Compared to the LBL method, the hollow polymer@silica microspheres prepared via the sol–gel method have a uniform and dense inorganic shell, thus ensuring the complete spherical morphology of the microspheres after calcination, even if the inorganic shell thickness is only 15 nm. Moreover, the hollow polymer@silica microspheres prepared via the sol–gel method exhibit improved compression resistance and good opacity, remaining intact at 16,000 psi and providing the corresponding coating with transmittance lower than 35.1%. This work highlights the morphology regulation of microspheres prepared by different methods and provides useful insights for the design of composites microspheres with controllable structures.https://www.mdpi.com/1420-3049/30/4/954hollow structuredouble-shell structurecomposite microspheresmorphology controlcompression resistance |
| spellingShingle | Mingxiu Jiang Yuanyuan Yang Jiawei Feng Zhaopan Wang Wei Deng Construction and Regulation of Polymer@Silica Microspheres with Double-Shell Hollow Structures Molecules hollow structure double-shell structure composite microspheres morphology control compression resistance |
| title | Construction and Regulation of Polymer@Silica Microspheres with Double-Shell Hollow Structures |
| title_full | Construction and Regulation of Polymer@Silica Microspheres with Double-Shell Hollow Structures |
| title_fullStr | Construction and Regulation of Polymer@Silica Microspheres with Double-Shell Hollow Structures |
| title_full_unstemmed | Construction and Regulation of Polymer@Silica Microspheres with Double-Shell Hollow Structures |
| title_short | Construction and Regulation of Polymer@Silica Microspheres with Double-Shell Hollow Structures |
| title_sort | construction and regulation of polymer silica microspheres with double shell hollow structures |
| topic | hollow structure double-shell structure composite microspheres morphology control compression resistance |
| url | https://www.mdpi.com/1420-3049/30/4/954 |
| work_keys_str_mv | AT mingxiujiang constructionandregulationofpolymersilicamicrosphereswithdoubleshellhollowstructures AT yuanyuanyang constructionandregulationofpolymersilicamicrosphereswithdoubleshellhollowstructures AT jiaweifeng constructionandregulationofpolymersilicamicrosphereswithdoubleshellhollowstructures AT zhaopanwang constructionandregulationofpolymersilicamicrosphereswithdoubleshellhollowstructures AT weideng constructionandregulationofpolymersilicamicrosphereswithdoubleshellhollowstructures |