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Thermal, dynamic mechanical analysis and mechanical properties of polybutylene terephthalate/polyethylene terephthalate blends

Ahmad Saidi, Muhammad Akmal and Hassan, Azman and Wahit, Mat Uzir and Choy, Lai Jau and Anuar, Hazleen (2020) Thermal, dynamic mechanical analysis and mechanical properties of polybutylene terephthalate/polyethylene terephthalate blends. Jurnal Teknologi (Sciences & Engineering), 82 (5). pp. 73-83. E-ISSN 2180–3722

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Abstract

Differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and mechanical tests were conducted to characterize the properties of polybutylene terephthalate/polyethylene terephthalate (PBT/PET) blends. PBT and PET were blended at different PBT/PET ratios (80/20, 60/40, 40/60, 20/80) via twin screw extruder prior to injection molding. DSC characterization showed a single glass transition temperature for all PBT/PET blends indicating that the miscibility occurred in the amorphous region. From DMA results, loss modulus and tan δ also showed a single peak for all PBT/PET blends, confirming the DSC results. At room temperature, PBT/PET 20/80 has the highest storage modulus followed by PBT/PET 80/20 blend. PET has higher tensile strength, flexural strength, Young’s and flexural modulus than PBT but lower in elongation at break and impact strength. PBT/PET 80/20 blend has the highest tensile strength, flexural strength, elongation at break, and impact strength compared to other PBT/PET blends. PBT/PET 80/20 blend can be suggested as an optimum formulation with balanced mechanical properties in terms of stiffness and toughness.

Item Type: Article (Journal)
Additional Information: 4130/82784
Uncontrolled Keywords: Polybutylene terephthalate, polyethylene terephthalate, polymer blend, dynamic mechanical analysis, mechanical and thermal properties
Subjects: T Technology > TS Manufactures > TS195 Packaging
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: Dr Hazleen Anuar
Date Deposited: 10 Sep 2020 10:24
Last Modified: 10 Sep 2020 10:24
URI: http://irep.iium.edu.my/id/eprint/82784

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