کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5204249 | 1381954 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crosslinking of ethylene-propylene (-diene) terpolymer elastomer initiated by an excimer laser
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Excimer laser-induced crosslinking of ethylene-propylene-diene elastomer using a trace amount of photoinitiator, 1-hydroxy cyclohexyl phenyl ketone, was evaluated. Gel content measurements on irradiated samples showed that crosslinking was a natural consequence in all, which had undergone exposure to laser radiation. Degree of crosslinking was found to be linear with the laser exposure energy and was found to reach a saturation value of approximately 80% at about 100Â J. However, for thicker samples the dependence of gel content i.e. crosslinking was found to be exponential over the range of laser exposure energy in excess of 200Â J. As is expected, the tensile strength increased significantly with the increase of crosslinking. The band at 808Â cmâ1 in the infrared spectra was attributed to the 5-ethylidene-2-norbornene (ENB) content in the polymer. The ENB has a double bond which is considered to be consumed with a high radiochemical yield and thereby contributes to the increase in rate of the formation of intermolecular bridge density.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 92, Issue 8, August 2007, Pages 1640-1644
Journal: Polymer Degradation and Stability - Volume 92, Issue 8, August 2007, Pages 1640-1644
نویسندگان
Ferdous Khan, Diana Kwek, E. Kronfli, S.R. Ahmad,