Effect of silymarin on thermooxidative degradation of PLA/PHB blends

• Autorzy: Olejnik Olga , Masek Anna

Identyfikatory

DOI

10.15199/28.2020.3.3

Warianty tytułu

PL

Wpływ sylimaryny na proces degradacji termooksydacyjnej mieszanin PLA/PHB

• Języki publikacji: EN

Abstrakty

EN

The effect of antioxidant of natural origin, i.e. silimarine on mechanical properties and thermooxidative degradation of biodegradable polylactide and polyhydroxybutyrate (PLA/PHB) blends obtained by melt mixing in a single-screw extruder (D = 25 mm, L/D = 24) was investigated. The addition of silymarin (0.7, 1.4 and 2.1 wt. %) improves the resistance to thermooxidative degradation of PLA/PHB blends, as evidenced by the value of the aging coeffi cient. Moreover, thanks to its unique properties, silymarin has a stabilizing effect and can be used as a pigment for polymers.

PL

Zbadano wpływ przeciwutleniacza pochodzenia naturalnego, tj. sylimaryny na właściwości mechaniczne oraz degradację termooksydacyjną biodegradowalnych mieszanin polilaktydu i polihydroksymaślanu (PLA/PHB). Mieszaniny otrzymano metodą mieszania w stanie stopionym przy użyciu wytłaczarki jednoślimakowej (D = 25 mm, L/D = 24). Dodatek (0,7; 1,4; 2,1% mas.) sylimariny poprawia odporność na degradację termooksydacyjną mieszanin PLA/PHB, o czym świadczy wartość współczynnika starzenia. Ponadto dzięki swoim wyjątkowym właściwościom sylimaryna ma działanie stabilizujące i może być stosowana jako barwnik do polimerów.

Słowa kluczowe

EN

polylactide; polyhydroxybutyrate; antioxidant; silymarin; biodegradable blends; thermooxidative aging

PL

polilaktyd; polihydroksymaślan; przeciwutleniacz; sylimaryna; mieszaniny biodegradowalne; starzenie termooksydacyjne

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 2020
• Tom: Vol. 41, nr 3
• Strony: 7--11
• Opis fizyczny: Bibliogr. 28 poz., fig., tab.

Twórcy

autor

Olejnik Olga

• Institute of Polymer and Dye Technology, Lodz University of Technology, ul. Stefanowskiego 12/16, 90-924 Lodz

autor

Masek Anna

• Institute of Polymer and Dye Technology, Lodz University of Technology, ul. Stefanowskiego 12/16, 90-924 Lodz

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).