Morphology and Phase Characteristics of High‐Density Polyethylene Probed by NMR Spin Diffusion and Second Moment Analysis | Zendy

Lili Zhang | Zendy; Chen Qun | Zendy; Hansen Eddy W. | Zendy

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Morphology and Phase Characteristics of High‐Density Polyethylene Probed by NMR Spin Diffusion and Second Moment Analysis

Author(s) -

Lili Zhang,

Chen Qun,

Hansen Eddy W.

Publication year - 2005

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.200400343

Subject(s) - spin diffusion , crystallinity , pulse sequence , polyethylene , dipole , polarization (electrochemistry) , materials science , sequence (biology) , phase (matter) , diffusion , analytical chemistry (journal) , nuclear magnetic resonance spectroscopy , chemistry , nuclear magnetic resonance , crystallography , physics , stereochemistry , thermodynamics , organic chemistry , composite material , biochemistry

Summary: A dipolar filter pulse sequence combined with cross‐polarization‐MAS is applied to characterize the phase distribution, morphology, and spin diffusion within a high‐density polyethylene sample. A new method to obtain quantitative 13 C NMR by combining cross‐polarization‐MAS and spin diffusion NMR is presented. The derived crystallinity is consistent with the corresponding crystallinity obtained by 1 H NMR.Illustration of the pulse sequence(s) applied in the present work.

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