کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9594298 | 1395496 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solid-state NMR characterization of cross-linking in EPDM/PP blends from 1H-13C polarization transfer dynamics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Solid-state NMR characterization of cross-linking in EPDM/PP blends from 1H-13C polarization transfer dynamics Solid-state NMR characterization of cross-linking in EPDM/PP blends from 1H-13C polarization transfer dynamics](/preview/png/9594298.png)
چکیده انگلیسی
A novel approach for solid-state NMR characterization of cross-linking in polymer blends from the analysis of 1H-13C polarization transfer dynamics is introduced. It extends the model of residual dipolar couplings under permanent cross-linking, typically used to describe 1H transverse relaxation techniques, by considering a more realistic distribution of the order parameter along a polymer chain in rubbers. Based on a systematic numerical analysis, the extended model was shown to accurately reproduce all the characteristic features of the cross-polarization curves measured on such materials. This is particularly important for investigating blends of great technological potential, like thermoplastic elastomers, where 13C high-resolution techniques, such as CP-MAS, are indispensable to selectively investigate structural and dynamical properties of the desired component. The validity of the new approach was demonstrated using the example of the CP build-up curves measured on a well resolved EPDM resonance line in a series of EPDM/PP blends.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Nuclear Magnetic Resonance - Volume 27, Issue 3, May 2005, Pages 165-173
Journal: Solid State Nuclear Magnetic Resonance - Volume 27, Issue 3, May 2005, Pages 165-173
نویسندگان
Mihaela Aluas, Claudiu Filip,