Cure kinetics of an acrylated epoxidized hemp oil-based bioresin system

Francucci, Gaston and Cardona, Francisco and Manthey, Nathan W. (2013) Cure kinetics of an acrylated epoxidized hemp oil-based bioresin system. Journal of Applied Polymer Science, 128 (3). pp. 2030-2037. ISSN 0021-8995

Abstract

In this work, the cure kinetics of a novel acrylated epoxidized hemp oil (AEHO)-based bioresin was investigated for the first time by differential scanning calorimetry (DSC) using both isothermal and nonisothermal conditions. This new bioresin was synthesized by the acrylation of a previously epoxidized hemp oil (EHO) bioresin. The curing of the AEHO bioresin showed an autocatalytic behavior with the vitrification phenomenon preventing the conversion reaching unity for all the temperatures studied. It was found that the curing behavior can be modeled with high accuracy using a modified Kamal autocatalytic model that takes into account the vitrification phenomenon. Dynamic activation energies were determined from the Kissinger and Ozawa–Flynn–Wall methods, resulting in 58.87 and 62.02 kJmol−1, respectively. In addition, activation energies associated with the autocatalytic model constants, k1 and k2, were established to be equal to 58.94 and 45.32 kJmol−1, respectively.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published online 13 August 2012. Permanent restricted access to published version in accordance with the copyright policy of the publisher.
Depositing User: Mr Nathan Manthey
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 22 Aug 2012 03:40
Last Modified: 10 Sep 2014 04:57
Uncontrolled Keywords: biopolymers; renewable polymers; differential scanning calorimetry; kinetics; thermosets; resins
Fields of Research (FOR2008): 03 Chemical Sciences > 0307 Theoretical and Computational Chemistry > 030703 Reaction Kinetics and Dynamics
09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030306 Synthesis of Materials
Socio-Economic Objective (SEO2008): B Economic Development > 86 Manufacturing > 8603 Processed Non-Food Agriculture Products (excl. Wood, Paper and Fibre) > 860303 Plant Extracts (e.g. Pyrethrum, Alkaloids, Jojoba Oil)
B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870303 Polymeric Materials (e.g. Paints)
Identification Number or DOI: doi: 10.1002/app.38380
URI: http://eprints.usq.edu.au/id/eprint/21675

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