Polymers and biopolymers are continuouslysubjected to the action of different stress factors, such asoxygen, heat, UV light, mechanical stress, humidity, etc.,during their processing and service life, undergoing overalloxidative degradation, that causes performance and propertydeterioration. To improve the resistance at high temperaturesand long-term weatherability of the polymers and biopolymers,usually, during their manufacturing, synthetic antioxidantsand UV-light stabilizers are added. In the pastdecade, several concerns related to the impact of the syntheticstabilizers have emerged, and to reduce their negative effect onhuman health and the environment, their replacement withnaturally occurring molecules, having similar protectionabilities, is greatly welcome. It has been demonstrated thatseveral natural polyphenols, vitamins, and carotenoids are efficient and suitable stabilizers for the protection of polymers andbiopolymers from oxidative degradation. Besides, it is worth noting that some natural compounds exhibit concentrationdependentanti-/pro-oxidant activity in biopolymers and polymers, for the rational control of the additive contents. In thisperspective, we briefly analyze the current results related to innovation in considering natural molecules for polymer andbiopolymer protection or pro-oxidation, having potential industrial applications, pointing out some advantages, e.g. protectionactions, and drawbacks, e.g. pro-oxidant and/or plasticizing actions, of these approaches.
|Numero di pagine||15|
|Rivista||ACS SUSTAINABLE CHEMISTRY & ENGINEERING|
|Stato di pubblicazione||Published - 2019|
All Science Journal Classification (ASJC) codes
- Environmental Chemistry
- Chemical Engineering(all)
- Renewable Energy, Sustainability and the Environment