Stabilisation of cis-1,4-polybutadiene against photo-oxidation and singlet oxygen oxidation by hindered phenols |
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| Authors: | JF Rabek B Rånby J Arct |
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| Institution: | Department of Polymer Technology, The Royal Institute of Technology, Stockholm, Sweden;Institute of Organic and Polymer Technology, Technical University, Wroclaw, Poland |
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| Abstract: | The hindered phenols, 1,6-di-methylphenol, 2,4,6-tri-methylphenol, 2,6-di-tert-butylphenol and 2,4,6-tri-tert-butylphenol, were examined for their stabilising effect in free radical photo-oxidative and singlet oxygen oxidative degradation of cis-1,4-polybutadiene in solution. The stabilising activity was found to be a complex function of the ability of the hindered phenols to react with free radicals and singlet oxygen. Steric hindrance has an obvious effect on the stabilising activity of phenols. |
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