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Blending poly (3-hydroxybutyrate) with polyethylene glycol (PEG): Thermal behaviour and rheological study

Norfarisha, Achim and Hazlina, Husin and Zulkafli, Hassan (2019) Blending poly (3-hydroxybutyrate) with polyethylene glycol (PEG): Thermal behaviour and rheological study. Journal of Mechanical Engineering and Sciences (JMES), 13 (3). 5294 -5305. ISSN 2289-4659 (print); 2231-8380 (online)

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Poly (3-hydroxybutyrate) (PHB) is a biodégradable polymer which its application in industrial was limited due to sensitive to high processing temperature and poor mechanical properties. The thermal and rheological behavior for blends of PHB extracted from dry weight of Jatropha and Poly (ethylene glycol) (PEG) were investigated. Blends of PHB/PEG (PHB 100, PHB 80, PHB 60 and PHB 50) have been prepared through solution blending method. The thermal using Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) and rheological behavior using Oscillating Disk Rheometer have been investigated. The results indicate all PHb/PEG blends showed decreased at lowest melting temperature crystallinity (Xc). The TGA result showed that PHB 80 less degraded and suggest better thermal stability compared to PHB 60 and PHB 50. Adding PEG to PHB also improved the rheological behavior of PHB. At higher frequency range, PHB 100 showed less dependency on frequency indicating the elastic structure it has compared to PHB 80, PHB 60 and PHB 50.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Polyhydroxybutyrate; Polyethylene glycol; Thermal stability; Rheological behaviour
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 21 Nov 2019 03:36
Last Modified: 21 Nov 2019 03:36
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