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Volumn 47, Issue 7, 2006, Pages 2470-2481

Solid-state 13C NMR investigation of the structure and dynamics of highly drawn polyethylene - Detection of the oriented non-crystalline component

Author keywords

Drawn polyethylene; Oriented non crystalline; Solid state 13C NMR

Indexed keywords

CRYSTALLIZATION; DIFFUSION; ISOTHERMS; MAGNETIC FIELDS; NUCLEAR MAGNETIC RESONANCE; SOLIDS;

EID: 33644973214     PISSN: 00323861     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.polymer.2006.01.086     Document Type: Article
Times cited : (10)

References (41)
  • 21
    • 33644967106 scopus 로고    scopus 로고
    • note
    • 13C NMR spectra shown in Fig. 6, a chemical shift drift is estimated to be 0.0047 ppm during the measurements. This order of the drift does not significantly affect the chemical shift values of the respective components that are listed in Tables 3 and 4.
  • 22
    • 33644983727 scopus 로고    scopus 로고
    • note
    • The isotropic chemical shifts calculated from the first moment [24] of the CSA spectra for the non-crystalline and the fast all-trans components in DPE9 are 30.94 and 33.24 ppm, respectively. The isotropic chemical shift of the latter component is very close to that observed in the corresponding MAS spectrum (33.25 ppm). Since the shape of the non-crystalline peak in the MAS spectrum is not symmetric like a Lorentzian, its top position cannot be simply compared with the 30.94 ppm calculated above.
  • 23
    • 33644990237 scopus 로고    scopus 로고
    • note
    • The isotropic chemical shifts calculated from the first moment of the CSA spectra for the non-crystalline and the fast all-trans components in DPE16 are 30.67 and 32.01 ppm, respectively. The value estimated for the fast all-trans is slightly different from its chemical shift of 33.25 ppm obtained under MAS. This disagreement may be due to macroscopic anisotropy that will still exist for the sample packed in a MAS rotor after cutting into small pieces in the case of higher-level drawing.
  • 39
    • 33644983975 scopus 로고    scopus 로고
    • Nishimura T, Kaji H, Horii F; to be published
    • Nishimura T, Kaji H, Horii F; to be published.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.