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Mechanical properties of microcapsules used in a self-healing polymer

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Title: Mechanical properties of microcapsules used in a self-healing polymer
Author(s): Keller, Michael W.; Sottos, Nancy R.
Abstract: The elastic modulus and failure behavior of poly(urea-formaldehyde) shelled microcapsules were determined through single-capsule compression tests. Capsules were tested both dry and immersed in a fluid isotonic with the encapsulant. A shell-theory model for a fluid-filled microcapsule was utilized to extract the modulus of the shell wall material from individual capsule tests. The testing of capsules immersed in a fluid had little influence on mechanical behavior in the elastic regime. The average capsule shell wall modulus was determined to be 3.7 GPa. Capsule diameter was found to have a significant effect on burst strength, with smaller capsules sustaining higher stresses before burst.
Issue Date: 2005-09
Publisher: Department of Theoretical and Applied Mechanics (UIUC)
Series/Report: TAM Reports 1071, (2005)
Genre: Technical Report
Type: Text
Language: English
URI: http://hdl.handle.net/2142/329
ISSN: 0073-5264
Publication Status: published or submitted for publication
Peer Reviewed: is peer reviewed
Date Available in IDEALS: 2007-03-09
Is Version Of: Published as: Michael W. Keller and Nancy R. Sottos, Mechanical properties of microcapsules used in a self-healing polymer. Experimental Mechanics, Vol.46, No. 6, 2006, pp. 725-733. DOI: 10.1007/s11340-006-9659-3. Copyright 2002 Springer Verlag.
 

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  • Theoretical and Applied Mechanics (TAM) Technical Reports
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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