A self-healing poly(dimethyl siloxane) elastomer

Michael W. Keller; Scott R. White; Nancy R. Sottos

doi:10.1002/adfm.200700086

A self-healing poly(dimethyl siloxane) elastomer

Michael W. Keller, Scott R. White, Nancy R. Sottos

Research output: Contribution to journal › Article › peer-review

Abstract

Self-healing functionality is imparted to a poly(dimethyl siloxane) (PDMS) elastomer. This new material is produced by the incorporation of a microencapsulated PDMS resin and a microencapsulated crosslinker into the PDMS matrix. A protocol based on the recovery of tear strength is introduced to assess the healing efficiency for these compliant polymers. While most PDMS elastomers possess some ability to re-mend through surface cohesion, the mechanism is generally insufficient to produce significant recovery of initial material strength under ambient conditions. Self-healing PDMS specimens, however, routinely recover between 70-100 % of the original tear strength. Moreover, the addition of microcapsules increases the tear strength of the PDMS. The effect of microcapsule concentration on healing efficiency is also investigated.

Original language	English (US)
Pages (from-to)	2399-2404
Number of pages	6
Journal	Advanced Functional Materials
Volume	17
Issue number	14
DOIs	https://doi.org/10.1002/adfm.200700086
State	Published - Sep 24 2007

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Chemistry
Biomaterials
General Materials Science
Condensed Matter Physics
Electrochemistry

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10.1002/adfm.200700086

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A self-healing poly(dimethyl siloxane) elastomer

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