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- W2023772639 abstract "Abstract Degradation study of trans-1,4-polyisoprene (trans-1,4-PI), that can be produced by the nature, was performed using first and second generation Grubbs and Hoveyda–Grubbs catalysts with olefins (ethylene or 1-octene) as transfer agents in toluene at 60 °C. While first generation Grubbs catalyst afforded low degradation, highlighting the presence of catalyst decomposition and/or inter-chain cross-metathesis reactions, an almost complete metathetic degradation could be reached using the second generation Grubbs catalyst in few minutes. Nevertheless, the synthesis of well-defined polyisoprenes with a targeted molar mass revealed to be difficult with Grubbs catalysts. On the contrary, Hoveyda–Grubbs catalysts were found to be more efficient to control the degradation of trans-1,4-PI. Indeed, regioselective degradation afforded pure trans-1,4-PI with a range of molar mass from 50 000 g/mol to 10 000 g/mol. However, polyisoprenes of lower molar masses (Mn" @default.
- W2023772639 created "2016-06-24" @default.
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- W2023772639 date "2014-01-01" @default.
- W2023772639 modified "2023-10-12" @default.
- W2023772639 title "Metathetic degradation of trans-1,4-polyisoprene with ruthenium catalysts" @default.
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- W2023772639 doi "https://doi.org/10.1016/j.polymdegradstab.2013.10.022" @default.
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