کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5202660 | 1381906 | 2012 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Grafting of styrene and 2-vinylnaphthalene onto silicone rubber to improve radiation resistance
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
Styrene (St) and vinyl naphthalene (2VN) were grafted onto silicone rubber (SR) as “antirads” agents for internal radiation protection. The styrene grafted onto silicone rubber (SR-g-St) sheets were synthesized by the direct gamma radiation method in hexane/ethyl acetate solutions of styrene, and SR-g-2VN in tetrahydrofuran (THF) solutions of 2-vinylnaphtalene at room temperature. The grafting reaction was carried out at doses of 10-100 kGy, at a dose rate of 8.36 kGy hâ1. The resistance to irradiation of modified silicone rubber was tested at doses from 100 to 1000 kGy at a dose rate of 8.36 kGy/h. After irradiation of the un-grafted and grafted silicone materials, the crosslinking density, the average molecular weight between crosslinks (Mc), elastic modulus, and thermal properties were studied. The results show that 2-vinylnaphthalene has better radiation protection than styrene, with a protection coefficient of 0.83 compared with 0.80 for styrene. The changes in the properties of silicone rubber due to radiation were examined by infrared (FTIR-ATR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and various mechanical properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 97, Issue 8, August 2012, Pages 1495-1503
Journal: Polymer Degradation and Stability - Volume 97, Issue 8, August 2012, Pages 1495-1503
نویسندگان
Giovanni Gonzalez-Perez, Guillermina Burillo, Takeshi Ogawa, Miguel Avalos-Borja,