Electron beam irradiation method to change polypropylene application: Rheology and thermomechanical properties
Publish place: Polyolefins Journal، Vol: 6، Issue: 1
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_POJ-6-1_005
تاریخ نمایه سازی: 20 خرداد 1398
Abstract:
Irradiation of polymers is one of the most effective and economical methods for modifying their properties and for changing their applications. In this study, an extrusion grade polypropylene (PP) was treated by electron beam irradiation to produce a PP suitable for injection molding. Irradiation was carried out at different doses (0-80 kGy) under atmosphere air and at ambient temperature. Melt flow index (MFI) measurements showed PP samples irradiated in the range of 10 to 40 kGy are suitable to use in injection molding. Electron beam irradiation decreased the viscosity and the shear thinning rheological behavior of PP. The differential scanning calorimetry (DSC) analysis revealed that electron beam irradiation increased the crystallinity percentage and temperature of PP, but decreased the melting temperature. Among all treated samples, the PP20, irradiated at the dose of 20 kGy, showed the highest impact resistance. It had higher Young’s modulus and tensile strength, but lower elongation-at-break in comparison with untreated PP.
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Authors
Fatemeh Hassan
Department of Chemical and Polymer Engineering, Faculty of Engineering, Yazd University, ۸۹۱۵۸۱–۸۴۱۱, Iran.
Mehdi Entezam
Department of Chemical and Polymer Engineering, Faculty of Engineering, Yazd University, ۸۹۱۵۸۱–۸۴۱۱, Iran.
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