Effects of processing conditions of poly(methylmethacrylate) encapsulated liquid curing agent on the properties of self-healing composites

Li, Qi and Mishra, Ananta Kumar and Kim, Nam Hoon and Kuila, Tapas and Lau, Kin-tak and Lee, Joong Hee (2013) Effects of processing conditions of poly(methylmethacrylate) encapsulated liquid curing agent on the properties of self-healing composites. Composites Part B: Engineering , 49. pp. 6-15. ISSN 1359-8368

Abstract

A series of microcapsules were prepared by solvent evaporation technique using liquid curing agent, polyetheramine as the core material and poly(methylmethacrylate) as the shell material. The desired morphology, shell wall thickness, curing agent content, and size distribution of microcapsules have been obtained by fine tuning the processing conditions such as reaction temperature, core-shell weight ratio, agitation speed, and emulsifier concentration in the medium. The resulting microcapsules exhibit excellent thermal and curing agent storage stability. Maximum healing efficiency of 93.50% has been obtained with 15 wt.% epoxy containing microcapsules. The microcapsules containing liquid curing agent can efficiently be utilized for the fabrication of epoxy-based self-healing composites.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Elsevier Ltd. Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 19 Jun 2014 23:58
Last Modified: 17 Jul 2014 05:28
Uncontrolled Keywords: thermosetting resin; mechanical properties; thermal analysis; cure
Fields of Research : 03 Chemical Sciences > 0306 Physical Chemistry (incl. Structural) > 030606 Structural Chemistry and Spectroscopy
09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870303 Polymeric Materials (e.g. Paints)
Identification Number or DOI: 10.1016/j.compositesb.2013.01.011
URI: http://eprints.usq.edu.au/id/eprint/25330

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