Elasticity of Epoxy Networks
Author Information
Author(s): Filippidi Emmanouela, Dhiman Anuj K., Li Benke, Athanasiou Thanasis, Vlassopoulos Dimitris, Fytas George
Primary Institution: University of Crete
Hypothesis
The correlation between the experimental viscoelastic and elastic moduli of epoxy networks remains unclear.
Conclusion
The study shows that the storage modulus increases significantly with cross-link density compared to the longitudinal modulus.
Supporting Evidence
- The storage modulus G' increases significantly with cross-link density.
- The longitudinal modulus M' shows a weaker dependence on cross-link density.
- Brillouin light spectroscopy provides a noncontact method to measure elasticity.
- Different frequency regimes reveal distinct mechanical properties of the networks.
Takeaway
This study looks at how stretchy and strong certain plastics are when they are made with different amounts of a special ingredient called a cross-linker.
Methodology
The study used rheology and Brillouin light spectroscopy to measure the mechanical properties of solvent-free epoxy networks with varying cross-link densities.
Limitations
The study's findings may not be applicable to networks with different chemistries or cross-link densities.
Digital Object Identifier (DOI)
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