Impact of the Ozone on the PHB Supramolecular Structure and Kinetics of Biodegradation
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Wiley
2025
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| author | Polina M. Tyubaeva Ivetta A. Varyan Alexey V. Krivandin Roman R. Romanov Vasiliy А. Merzlikin Anatoly A. Popov |
| author_facet | Polina M. Tyubaeva Ivetta A. Varyan Alexey V. Krivandin Roman R. Romanov Vasiliy А. Merzlikin Anatoly A. Popov Polina M. Tyubaeva Ivetta A. Varyan Alexey V. Krivandin Roman R. Romanov Vasiliy А. Merzlikin Anatoly A. Popov |
| collection | Wiley Open Access |
| contents | Impact of the Ozone on the PHB Supramolecular Structure and Kinetics of Biodegradation Polina M. Tyubaeva Ivetta A. Varyan Alexey V. Krivandin Roman R. Romanov Vasiliy А. Merzlikin Anatoly A. Popov Journal of Applied Polymer Science ABSTRACT An urgent task today is a detailed study of the effect of oxidation of biopolymers on their properties. The purpose of the work was to study the impact of ozone on poly(3‐hydroxybutyrate) (PHB). The manuscript presents DSC, XRD, EPR, FTIR, SEM, AFM and GPC data. It was shown that the microrelief of the PHB films changes after 5 h of ozonation without accumulating new chemical groups on the surface. Also, the crystalline phase remained completely unaffected. All the changes occurred in the amorphous region, which became significantly denser with a decrease in radical mobility by 45%. As a result, the strength of the films increased by 60% with constant elongation. The ozonized films were characterized by a decrease in polydispersity by 41%, an increase in the proportion of medium‐length macromolecules by 80% and an increase in molecular weight by 5%, which shows that ozone reacts most actively with low molecular weight fragments of PHB in the direction of their rupture and with medium‐length chains in the direction of crosslinking. These changes lead to an increase in the degradation period of films in the soil from 200 to 400 days. The prospect of using ozone for surface modification, in particular for controlling the rate of biodegradation, is very attractive due to its simplicity and low cost of implementation. 10.1002/app.70050 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/app.70050 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_app_70050 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2025 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Impact of the Ozone on the PHB Supramolecular Structure and Kinetics of Biodegradation Polina M. Tyubaeva Ivetta A. Varyan Alexey V. Krivandin Roman R. Romanov Vasiliy А. Merzlikin Anatoly A. Popov Journal of Applied Polymer Science Impact of the Ozone on the PHB Supramolecular Structure and Kinetics of Biodegradation Polina M. Tyubaeva Ivetta A. Varyan Alexey V. Krivandin Roman R. Romanov Vasiliy А. Merzlikin Anatoly A. Popov Journal of Applied Polymer Science ABSTRACT An urgent task today is a detailed study of the effect of oxidation of biopolymers on their properties. The purpose of the work was to study the impact of ozone on poly(3‐hydroxybutyrate) (PHB). The manuscript presents DSC, XRD, EPR, FTIR, SEM, AFM and GPC data. It was shown that the microrelief of the PHB films changes after 5 h of ozonation without accumulating new chemical groups on the surface. Also, the crystalline phase remained completely unaffected. All the changes occurred in the amorphous region, which became significantly denser with a decrease in radical mobility by 45%. As a result, the strength of the films increased by 60% with constant elongation. The ozonized films were characterized by a decrease in polydispersity by 41%, an increase in the proportion of medium‐length macromolecules by 80% and an increase in molecular weight by 5%, which shows that ozone reacts most actively with low molecular weight fragments of PHB in the direction of their rupture and with medium‐length chains in the direction of crosslinking. These changes lead to an increase in the degradation period of films in the soil from 200 to 400 days. The prospect of using ozone for surface modification, in particular for controlling the rate of biodegradation, is very attractive due to its simplicity and low cost of implementation. 10.1002/app.70050 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Impact of the Ozone on the PHB Supramolecular Structure and Kinetics of Biodegradation |
| topic | Journal of Applied Polymer Science |
| url | https://onlinelibrary.wiley.com/doi/10.1002/app.70050 |