Property analysis of triglyceride-based thermosets
- 23 November 2004
- journal article
- Published by Elsevier BV in Polymer
- Vol. 46 (1), 61-69
- https://doi.org/10.1016/j.polymer.2004.11.002
Abstract
Triglycerides with acrylate functionality were prepared from various oils and model triglycerides. The triglyceride-acrylates were homopolymerized and copolymerized with styrene. The cross-link densities of the resulting polymer networks were predicted utilizing the Flory–Stockmayer theory. Although the model predictions overestimated the cross-link density, the trends in the cross-link density predictions matched the experimental results. In both cases, the cross-link density was found to increase gradually at low levels of acrylation and then linearly at higher levels of acrylation. The deviation in the experimental results and model predictions were the result of intramolecular cross-linking. Approximately 0.5 and 0.8 acrylates per triglyceride were lost to intramolecular cyclization for homopolymerized triglyceride-acrylates and triglycerides copolymerized with styrene, respectively. The glass transition temperature (Tg) increased approximately linearly with the cross-link density from as low as −50 °C to as high as 92 °C. Simple models accurately predicted the effect of cross-link density on Tg. The tensile strength and modulus of triglyceride-based polymers increased exponentially at low levels of acrylate functionality, but increased linearly at higher levels of acrylate functionality, as predicted by vector percolation theory.Keywords
This publication has 14 references indexed in Scilit:
- Synthesis and characterization of monomers and polymers for adhesives from methyl oleateJournal of Polymer Science Part A: Polymer Chemistry, 2002
- The effect of fatty acid composition on the acrylation kinetics of epoxidized triacylglycerolsJournal of Oil & Fat Industries, 2002
- Development and application of triglyceride‐based polymers and compositesJournal of Applied Polymer Science, 2001
- Current Status of Unsaturated Polyester ResinsJournal of Macromolecular Science, Part C: Polymer Reviews, 2000
- An investigation of vinyl-ester?styrene bulk copolymerization cure kinetics using Fourier transform infrared spectroscopyJournal of Applied Polymer Science, 2000
- Composites from Natural Fibers and Soy Oil ResinsApplied Composite Materials, 2000
- Effect of epoxy–amine stoichiometry on cured resin material propertiesJournal of Applied Polymer Science, 1992
- A New Derivation of Post Gel Properties of Network PolymersMacromolecules, 1976
- Elastically Effective Strand Density in Polymer NetworksMacromolecules, 1968
- Influence of molecular weight and degree of crosslinking on the specific volume and glass temperature of polymersJournal of Polymer Science, 1955