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Coatings 2015, 5(3), 557-575; doi:10.3390/coatings5030557

Effect of Microwave Cure on the Thermo-Mechanical Properties of Tung Oil-Based/Carbon Nanotube Composites

Chemistry Department, Georgia Southern University, Statesboro, GA 3046, USA
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Academic Editor: Alessandro Lavacchi
Received: 30 July 2015 / Revised: 28 August 2015 / Accepted: 14 September 2015 / Published: 17 September 2015
(This article belongs to the Special Issue Coatings and Sustainability)
View Full-Text   |   Download PDF [968 KB, uploaded 17 September 2015]   |  

Abstract

Tung oil is uniquely reactive among plant-based natural oils due to the series ofconjugated carbon-carbon double bonds in its fatty acid chains. These conjugatedcarbon-carbon double bonds impart a high reactivity towards cationic polymerization in thepresence of other reactive co-monomers, such as divinylbenzene and styrene. An impressivedecrease in the cure time of tung oil-based thermosets has been achieved when the resinsinvestigated were microwaved in the presence of carbon nanotubes (CNTs). However, thefast cure compromised the overall thermo-mechanical properties of the materialsinvestigated. Microwave power, exposure time, and CNT loading effects have been assessedby means of dielectric analysis (DEA), thermogravimetric analysis (TGA), differentialscanning calorimetry (DSC), dynamic mechanical analysis (DMA), and proton nuclearmagnetic resonance (1H NMR) spectroscopy of extracts obtained by Soxhlet extraction.Possible reasons were proposed to explain the overall inferior properties observed wheneverfaster cure rates were achieved. View Full-Text
Keywords: bio-based materials; microwaves; carbon nanotubes; tung oil; cationic polymerization bio-based materials; microwaves; carbon nanotubes; tung oil; cationic polymerization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Smith, M.; Payne, A.; Edwards, K.; Morris, S.; Beckler, B.; Quirino, R.L. Effect of Microwave Cure on the Thermo-Mechanical Properties of Tung Oil-Based/Carbon Nanotube Composites. Coatings 2015, 5, 557-575.

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