کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5185633 | 1381083 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Strain-induced disorder-order crystalline phase transition in nylon 6 and its miscible blends
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
This study deals with the structural modifications of a polyamide 6 (PA6) and a miscible blend of this PA6 with an amorphous semi-aromatic copolyamide (PA6/aPA) under tensile drawing. By combining X-ray diffraction and FTIR spectroscopy, the crystalline phase transitions have been investigated as a function of drawing temperature and strain for both systems. A mechanically induced β-α transition has been clearly identified for PA6 at 100 °C and above, whereas the PA6/aPA blend undergoes the same evolution at 130 °C. These threshold temperatures are very close to the upper limit of the glass-rubber transition of the two systems. This is evidence that the amorphous chain mobility plays a major role on the reorganization capability of the crystalline phase towards its stable form. Further discussion is made regarding the physical origin of this phenomenon.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 48, Issue 17, 10 August 2007, Pages 5080-5087
Journal: Polymer - Volume 48, Issue 17, 10 August 2007, Pages 5080-5087
نویسندگان
V. Miri, O. Persyn, J.M. Lefebvre, R. Seguela, A. Stroeks,