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Issue 4, 2019
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Fabrication of self-healing hydrogels with surface functionalized microcapsules from stellate mesoporous silica

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Abstract

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.

Graphical abstract: Fabrication of self-healing hydrogels with surface functionalized microcapsules from stellate mesoporous silica

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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
Polym. Chem., 2019,10, 503-511

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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., 2019, 10, 503
    DOI: 10.1039/C8PY01402G

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