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Thermal and radiation stability of POSS by the presence of hydrocarbon substituents

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Abstract

The thermal and radiation stabilities of POSS modified with various hydrocarbon substituents are studied by chemiluminescence. The material answers are different in relation with the electronic densities that exist in the modified structures. The oxidative degradation achieved at four γ-doses: 0, 25, 50 and 100 kGy present unlike behavior, because the substituents interact with the frame of silsesquioxanes and the scission of –Si–O–moieties exhibit different levels. The comparison of nonisothermal spectra reveals the generation of hydroperoxides at two different temperatures that demonstrates the induction of degradation by means of the variation of electronic densities.

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Not any financial support sustained this study.

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Authors and Affiliations

  1. INCDIE ICPE CA, Radiation Chemistry, 313 Splaiul Unirii, 030138, Bucharest, Romania

    Traian Zaharescu

  2. ROSEAL SA, 5 A N. Bălcescu St., Ohorheiu Secuiesc, Harghita, Romania

    Traian Zaharescu

  3. Department of Civil Engineering and Architecture, University of Catania and UdR-Catania Consorzio INSTM, Via Santa Sofia 64, 95125, Catania, Italy

    Ignazio Blanco

Authors
  1. Traian Zaharescu
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  2. Ignazio Blanco
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The both authors contributed equally to the planning of study, the preparation and measurements of samples, the result interpretation and the writing of manuscript.

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Correspondence to Traian Zaharescu.

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Zaharescu, T., Blanco, I. Thermal and radiation stability of POSS by the presence of hydrocarbon substituents. J Therm Anal Calorim 148, 12981–12986 (2023). https://doi.org/10.1007/s10973-023-12327-6

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  • DOI: https://doi.org/10.1007/s10973-023-12327-6

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