کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7223837 | 1470563 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical and electrical characterization of gamma irradiated low density polyethylene/paraffin wax blend
ترجمه فارسی عنوان
ویژگی های نوری و الکتریکی ترکیبات موم پلی اتیلن / پارافین با عایق پرتو گاما
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کلمات کلیدی
پلی اتیلن چگالی کم واکس پارافین، نوری، برق تابش گاما،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
Blends of LDPE/wax in ratios of 100/0, 98/2, 96/4, 94/6, 92/8, 90/10 and 85/15 (w/w) were prepared by melt-mixing method at the temperature of 150â¯Â°C. It was found that increasing the wax content more than 15% leads to phase separation. Optical and electrical properties of pure LDPE, pure paraffin wax and LDPE/paraffin wax blends were studied before and after gamma irradiation. The optical band gap (Egopt) and Urbacht energy (Eu) in the LDPE/paraffin wax blends were determined. The results show a decrease in Egopt and increase in Eu by increasing paraffin wax ratio. The transition energy for electrons is an allowed indirect. The electrical properties including dielectric constant (ε'), dielectric loss (εʺ) and the ac conductivity (Ïac) in the frequency range (50â¯KHz-1â¯MHz) at room temperature were investigated. εâ², εʺ and Ïac increase with increasing paraffin wax ratio. εⲠand εʺ values are higher at low frequencies, while at high frequencies the trend is reversed. Influence of gamma radiation on the optical and electrical properties for the pure samples and LDPE/paraffin wax blends has been evaluated at different gamma irradiation doses (25â¯kGy, 50â¯kGy and 75â¯kGy). It was found that Egopt decreases, while Eu increases with increasing irradiation dose. Also, we report an increase in εâ², εʺ and Ïac with increasing irradiation dose. The results of the optical and electrical characteristics indicate a relation between the amorphous nature of the samples and electrical conductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 164, July 2018, Pages 254-262
Journal: Optik - Volume 164, July 2018, Pages 254-262
نویسندگان
Saleh M. Abdou, H. El-Zahed, H.H. Elnahas, A. Abdeldaym,