کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5189384 | 1381183 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vibrational dynamics of trans-1,4-polyisoprene (β-form)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The earlier work on the vibrational dynamics of trans-1,4-polyisoprene (β-TPI) suffered from several infirmities. This work has been redone with all infirmities removed. It not only leads to a few different assignments but also better values of interactive constants. Two significant outcomes of the present work are; one change in the profile of the dispersion curves and repulsion between the two acoustic modes at the phase values away from the zone center. The present work leads to a fuller interpretation of observed spectra. Several observed unassigned modes have been accounted for due to the presence of regions of high density-of-states such as von Hove type singularities. Predictive values of heat capacity as a function of temperature are reported.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 14, 28 June 2006, Pages 5154-5160
Journal: Polymer - Volume 47, Issue 14, 28 June 2006, Pages 5154-5160
نویسندگان
Ajita Pathak, Vikal Saxena, Poonam Tandon, Vishwambhar Dayal Gupta,