期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 129, 期 -, 页码 916-926出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2019.02.089
关键词
Self-healing hydrogels; Microcapsules; Mesoporous silica
资金
- National Natural Science Foundation of China [51773086, 51573075, 21808098]
- Key Program for Basic Research of Natural Science Foundation of Shandong Province [ZR2018ZC0946]
- Natural Science Foundation of Shandong Province [ZR2018BB027]
- Project of Shandong Province Higher Educational Science [J16LC20, J18KA080]
In this manuscript, dual network self-healing alginate/guar gum hydrogels with polydopamine-type microcapsules from mesoporous silica nanoparticles were facilely prepared through one-pot method. Glutaraldehyde (GA) was used as a crosslinking agent to crosslink guar gum and sodium alginate, respectively. Metal-ligand interactions as reversible non-covalent bonds make the dual network hydrogels have a high degree of self-healing ability, which FeCl3 center dot 6H(2)O was coordinated with sodium alginate and polydopamine on the surface of microcapsules, respectively. The dual network structure significantly enhances the strength of the hydrogels (up to 7.3 MPa). It has also proved that these hydrogels exhibit excellent self-healing performance at ambient temperatures, which self-healing efficiency can reach to 95.5%. The obtained self-healing hydrogels have a promising application prospect for the design and synthesis of functional self-healing materials. (C) 2019 Elsevier B.V. All rights reserved.
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