کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1687359 1010652 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Swift heavy ion induced modification in PET: Structural and thermal properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Swift heavy ion induced modification in PET: Structural and thermal properties
چکیده انگلیسی

Films of 12 μm thickness of the polymer polyethylene terephthalate (PET) were exposed to swift heavy ions of silicon with energies ranging from 44 MeV to 120 MeV and total ion fluence ranging between 1011 and 1013 ions/cm2. The structural properties were investigated using Fourier transform infra red (FT-IR) and X-ray diffraction (XRD) techniques whereas the thermal studies were carried out employing differential scanning calorimetry (DSC). It was noticed that in general irradiation of PET by swift heavy ions of silicon led to the transformation of the polymer into a disordered amorphous state. However, at low fluence, some degree of ordering was noticed as reflected from new peak appearing in the XRD pattern. Around 35% decrease in the crystallite size was observed at the highest fluence. The observation of a mixture of different endotherms arising due to series of melting points at lower temperatures gave further evidence to the observation stated above. The results obtained in the present work are discussed in the light of similar studies reported in literature on other polymers irradiated with low and high energy radiations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 244, Issue 1, March 2006, Pages 243–247
نویسندگان
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