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Article Dans Une Revue Polymer Degradation and Stability Année : 2018

Controlled degradation of polyisoprene and polybutadiene: A comparative study of two methods

Résumé

Low molar mass carbonyl telechelic cis,1-4 polyisoprene (CTPI) and aldehyde telechelic cis,1-4 polybutadiene (ATPB) were easily prepared by the controlled degradation of high molar mass 1,4-cis polyisoprene (PI) and 1,4-cis polybutadiene (PB) in a molar mass range of 5 000-80 000 g.mol-1. Two methods are compared: the direct one using only the periodic acid (H5IO6) to randomly cleave the chain and a second one where the chain are first epoxidized before being cleaved by the periodic acid. In both cases, a control of the final chain length was observed with nevertheless a better control of the final chain length, dispersity and chain-ends using the 2-steps procedure. Importance of the washing step in order to avoid side reactions on the carbonyl chain-ends is also discussed. 2

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Dates et versions

hal-01870938 , version 1 (24-09-2020)

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Pierre Berto, Stéphane Grelier, Frédéric Peruch. Controlled degradation of polyisoprene and polybutadiene: A comparative study of two methods. Polymer Degradation and Stability, 2018, 154, pp.295 - 303. ⟨10.1016/j.polymdegradstab.2018.06.019⟩. ⟨hal-01870938⟩

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