کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1891373 | 1533530 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improvement in the degradation resistance of LDPE for radiochemical processing
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effect of rosemary extract on radiochemical stability of low density polyethylene was studied by chemiluminescence, FT-IR spectroscopy and differential scanning calorimetry after γ(137Cs)-irradiation at processing low doses (10 and 20 kGy) in respect of pristine material. The additive concentrations (1, 2 and 5 wt%) induced a significant improvement in radiation stability, especially at high temperatures, for example 200 °C, which is proved chiefly by lower values of chemiluminescence intensities. The comparison of neat and rosemary-modified LDPE samples has revealed the protection action of this natural extract, which delays efficiently the propagation of oxidative degradation in γ-exposed polyethylene. The most evident proof for antioxidative protection efficiency promoted by rosemary is the smooth changes in hydroxyl and carbonyl indexes calculated on LDPE/5 wt% rosemary samples at all exposure doses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 94, January 2014, Pages 151-155
Journal: Radiation Physics and Chemistry - Volume 94, January 2014, Pages 151-155
نویسندگان
Traian Zaharescu, Ilona PleÅa, Silviu Jipa,