Fabrication of self-healing hydrogels with surface functionalized microcapsules from stellate mesoporous silica
| Autor: | Shumin Liu, Zhilu Rao, Hou Chen, Liangjiu Bai, Wenxiang Wang, Mifa Chen, Yanling Dong, Zhenping Cheng, Dechao Fan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Acrylate
Fabrication Materials science Polymers and Plastics Hydrogen bond Organic Chemistry Bioengineering 02 engineering and technology Mesoporous silica 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Ultimate tensile strength Self-healing hydrogels Click chemistry 0210 nano-technology |
| Zdroj: | Polymer Chemistry. 10:503-511 |
| ISSN: | 1759-9962 1759-9954 |
| Popis: | This report describes a dual-healing method for self-healing hydrogels, in which stellate mesoporous silica (STMS) was used to prepare surface-functionalized microcapsules. Firstly, polydopamine (PDA) was wrapped on STMS to obtain a functional microcapsule, which was loaded with healing agents and photoinitiators in STMS. Subsequently, poly(methyl-2-ureido-4[1H]-pyrimidinone-co-butyl acrylate) (P(MAUPy-co-nBA)) was modified on the surface of the microcapsules by click chemistry. The functionalized microcapsules have a dual-healing functionality of combining multiple hydrogen bonds on the surface and the healing agent from the interior. Rheological and tensile tests show that hydrogels with surface functionalized microcapsules have a higher healing efficiency. This method provides a simple and efficient dual-healing approach using surface functionalized microcapsules, which has promising application prospects for the design and synthesis of functional self-healing materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|