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Effect of 3D-printed microvascular network design on the self-healing ability of crosslinked polymers
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Postiglione, G., Alberini, M., Leigh, Simon J., Levi, M. and Turri, S. (2017) Effect of 3D-printed microvascular network design on the self-healing ability of crosslinked polymers. ACS Applied Materials & Interfaces, 9 (16). pp. 14371-14378. doi:10.1021/acsami.7b01830 ISSN 1944-8244.
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Official URL: https://doi.org/10.1021/acsami.7b01830
Abstract
This article describes the manufacturing procedure and the characterization of self-healing polymers based on embedded microvascular networks. The samples were realized by resin casting into water soluble PVA molds, fabricated via 3D printing. This approach allowed to exploit the 3D printers peculiar ability in generating controlled geometric patterns for the creation of independent microchannels networks. The two reacting components of a two parts resin could be stored separately within the microstructure. The material self-healing ability resulted from their reaction when a severe damage caused the healing liquids to leak out wetting the sample cross section and diffusing one into the other. The mechanical properties of healed samples were investigated by means of uniaxial tensile tests and compared to those of undamaged samples. The effect of microchannels density and of different network designs onto the self-healing efficiency was determined. The different microstructures used were characterized using computerized X-ray microtomography. The versatility of the fabrication technique presented in this work allows to convert any water resistant resin into a full functional self-healing polymeric composite.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Journal or Publication Title: | ACS Applied Materials & Interfaces | ||||||||
Publisher: | American Chemical Society | ||||||||
ISSN: | 1944-8244 | ||||||||
Official Date: | 26 April 2017 | ||||||||
Dates: |
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Volume: | 9 | ||||||||
Number: | 16 | ||||||||
Page Range: | pp. 14371-14378 | ||||||||
DOI: | 10.1021/acsami.7b01830 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
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