ON THE REACTIVITY OF C60 FULLERENE WITH DIENE RUBBER MACRORADICALS. I. THE CASE OF NATURAL AND SYNTHETIC CIS-1,4-POLYISOPRENE UNDER ANAEROBIC AND THERMOOXIDATIVE DEGRADATION CONDITIONS
作者： Franco Cataldo
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摘要: C60 fullerene has been studied as thermal stabilizer and antioxidant of both natural rubber (cis-1,4-polyisoprene) synthetic cis-1,4-polyisoprene. The study conducted respectively under nitrogen flow air by simultaneous thermogravimetric analysis differential (TGA-DTA) on samples containing known quantities in comparison to a “blank” pure rubber. results show that (in absence oxygen) is cis-1,4-polyisoprene because it reacts with the polyisoprene macroradicals formed thermally-induced chain scission reaction slowing down degradation reaction. Conversely, thermo-oxidative conditions flow) acts an for cis-1,4-polyisoprene, provided heating rate slow (5°/min). At higher rates (20°C/min) does not any effect.
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