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Opening Furan for Tailoring Properties of Bio-based Poly(Furfuryl Alcohol) Thermoset
Guillaume Falco1, Nathanael Guigo1, Luc Vincent1
1Université Côte d'Azur, Université Nice-Sophia Antipolis, Institution, Institut de Chimie de Nice, UMR CNRS 7272, 06108, Nice Cedex 02, France.
Abstract:
This work shows how furan ring-opening reactions were controlled by polymerization conditions to tune the cross-link density in bio-based poly(furfuryl alcohol) (PFA). The influence of water and isopropyl alcohol (IPA) on the polymerization of furfuryl alcohol, and particularly on furan ring-opening, was investigated by means of 13 C NMR and FT-IR spectroscopy. Results indicated that formation of open structures were favored in the presence of solvents, thus leading to modification of the thermo-mechanical properties compared to PFA cross-linked without solvent. Dynamic mechanical analyses showed that when slightly more open structures were present in PFA it resulted in an important decrease of the cross-link density. Despite lower glass-transition temperature and lower elastic modulus for PFA polymerized with solvent, the thermal stability remains very high (>350 °C) even with more open structures in PFA.
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