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Fabrication of Self-Healing Hydrogels with Surface Functionalized Microcapsules from Stellate Mesoporous Silica

Abstract

This report describes a dual-healing method for self-healing hydrogels, 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 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 to the surface of the microcapsules by click chemistry. The functionalized microcapsules have dual-healing functionality of combining multiple hydrogen bonds in the surface and healing agent from the interior. Rheological and tensile tests show that hydrogels with surface functionalized microcapsule have a higher healing efficiency. This method supplies a simple and efficient dual-healing approach by surface functionalized microcapsule, which have a promising application prospect for the design and synthesis of functional self-healing materials.

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Publication details

The article was received on 29 Sep 2018, accepted on 05 Dec 2018 and first published on 06 Dec 2018


Article type: Paper
DOI: 10.1039/C8PY01402G
Citation: Polym. Chem., 2018, Accepted Manuscript
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    Fabrication of Self-Healing Hydrogels with Surface Functionalized Microcapsules from Stellate Mesoporous Silica

    M. Chen, D. Fan, S. Liu, Z. Rao, Y. Dong, W. Wang, H. Chen, L. Bai and Z. Cheng, Polym. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8PY01402G

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