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Issue 40, 2017
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Biobased, self-healable, high strength rubber with tunicate cellulose nanocrystals

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Abstract

Cellulose nanocrystals represent a promising and environmentally friendly reinforcing nanofiller for polymers, especially for rubbers and elastomers. Here, a simple approach via latex mixing is used to fabricate biobased, healable rubber with high strength based on epoxidized natural rubber (ENR). Tunicate cellulose nanocrystals (t-CNs) isolated from marine biomass with a high aspect ratio are used to improve both mechanical properties and self-healing behavior of the material. By introducing dynamic hydrogen bond supramolecular networks between oxygenous groups of ENR and hydroxyl groups on the t-CN surface, together with chain interdiffusion in permanently but slightly cross-linked rubber, self-healing and mechanical properties are facilitated significantly in the resulting materials. Macroscopic tensile healing behavior and microscopic morphology analyses are carried out to evaluate the performance of the materials. Both t-CN content and healing time have significant influence on healing behavior. The results indicate that a synergistic effect between molecular interdiffusion and dynamic hydrogen bond supramolecular networks leads to the improved self-healing behavior.

Graphical abstract: Biobased, self-healable, high strength rubber with tunicate cellulose nanocrystals

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Publication details

The article was received on 11 Jul 2017, accepted on 13 Sep 2017 and first published on 14 Sep 2017


Article type: Paper
DOI: 10.1039/C7NR05011A
Citation: Nanoscale, 2017,9, 15696-15706
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    Biobased, self-healable, high strength rubber with tunicate cellulose nanocrystals

    L. Cao, D. Yuan, C. Xu and Y. Chen, Nanoscale, 2017, 9, 15696
    DOI: 10.1039/C7NR05011A

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