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Amaral-Labat, G.
Grishechko, L. I.
Lenz e Silva G.F.B.
Kuznetsov, B. N.
Fierro, V.
Pizzi, A.
Celzard, A.
2018-02-07T07:29:12Z
2018-02-07T07:29:12Z
2017
Amaral-Labat, G. Rubber-like materials derived from biosourced phenolic resins [Текст] / G. Amaral-Labat, L. I. Grishechko, Lenz e Silva G.F.B., B. N. Kuznetsov, V. Fierro, A. Pizzi, A. Celzard // Journal of Physics: Conf. Series. — 2017. — Т. 879.
http://iopscience.iop.org/issue/1742-6596/879/1
http://elib.sfu-kras.ru/handle/2311/69870
The present work describes new gels derived from cheap, abundant and non-toxic wood bark extracts of phenolic nature, behaving like elastomers. Especially, we show that these materials might be used as rubber springs. Such amazing properties were obtained by a quite simple synthesis based on the autocondensation of flavonoid tannins in water at low pH in the presence of a plasticizer. After gelation and drying, the materials presented elastic properties that could be tuned from hard and brittle to quite soft and deformable, depending on the amount of plasticizer in the starting formulation. Not only the materials containing the relevant amount of plasticizer had stress-strain characteristics in quasi-static and cyclic compression similar to most commercial rubber springs, but they presented outstanding fire retardance, surviving 5 min in a flame at 1000°C in air. Neither flame propagation nor drips were noticed during the fire test, and the materials were auto-extinguishable. These excellent features make these materials potential substitutes to usual organic elastomers.
Rubber-like materials derived from biosourced phenolic resins
Journal Article
Journal Article Preprint
31.15
2018-02-07T07:29:12Z
10.1088/1742-6596/879/1/012013
Институт цветных металлов и материаловедения
Кафедра органической и аналитической химии
Journal of Physics: Conf. Series
Q3


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