X‐ray irradiated LDPE/PP blends with high mechanical and dielectric performance |
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Authors: | Ümit Alkan Mehmet K?l?ç Ya?ar Karabul Mustafa Ça?lar Orhan ?çelli Zeynep Güven Özdemir |
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Affiliation: | 1. Department of Computer Engineering, Istanbul Geli?im University, Istanbul 34215, Turkey;2. Department of Physics, Yildiz Technical University, Istanbul 34220, Turkey;3. Department of Medical Physics, Institute of Health Sciences, Istanbul Medipol University, ?stanbul 34810, Turkey |
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Abstract: | In this study, the influences of polypropylene (PP) additive (varying from 20% to 80% wt) and low dose X‐ray irradiation (changing from 25 to 100 Gy) on the mechanical and dielectric properties of low‐density polyethylene (LDPE) were investigated. LDPE/PP film blends were prepared by hot press technique. While the highest Young modulus and tensile strength were observed for the 20%LDPE/80%PP blend at 25 Gy X‐ray irradiation, the same blend had the highest energy at break and percentage strain at break values for 50 Gy X‐ray exposure. These results also indicated a chain scission in the material. The differential scanning calorimetry curves also indicated a chain scission and crosslinking effects in the blends due to X‐ray irradiation. Hence, the higher concentration of PP additive and exposure of low dose X‐ray resulted in a polymer composite with high mechanical performance. On the other hand, the dielectric investigations revealed that the 25 Gy X‐ray irradiated 20%LDPE/80%PP blend may also attract attention for capacitor applications due to its increased static dielectric constant and reduced dielectric loss. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 46571. |
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Keywords: | blends dielectric properties irradiation mechanical properties thermoplastics |
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