Characterization of the microdomain structure in polystyrene-polyisoprene block copolymers by 1H spin diffusion and small-angle X-ray scattering methods

Jack, Kevin S., Wang, Jiahu, Natansohn, Almeria and Register, Richard A. (1998) Characterization of the microdomain structure in polystyrene-polyisoprene block copolymers by 1H spin diffusion and small-angle X-ray scattering methods. Macromolecules, 31 10: 3282-3291. doi:10.1021/ma971436a


Author Jack, Kevin S.
Wang, Jiahu
Natansohn, Almeria
Register, Richard A.
Title Characterization of the microdomain structure in polystyrene-polyisoprene block copolymers by 1H spin diffusion and small-angle X-ray scattering methods
Formatted title
Characterization of the microdomain structure in polystyrene-polyisoprene block copolymers by 1H spin diffusion and small-angle X-ray scattering methods
Journal name Macromolecules   Check publisher's open access policy
ISSN 0024-9297
1520-5835
Publication date 1998-05-19
Sub-type Article (original research)
DOI 10.1021/ma971436a
Volume 31
Issue 10
Start page 3282
End page 3291
Total pages 10
Place of publication Washington DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
1H spin diffusion and small-angle X-ray scattering (SAXS) measurements were carried out for a series of polystyrene-polyisoprene block copolymers of varying molecular weight and molecular architecture. The sizes of domains and the thickness of the interphase in the copolymers were determined from the spin diffusion measurements using a model which explicitly considers the effects of 1H spin - lattice relaxation. The thickness of the interphase determined by NMR was found to be constant (ca. 3 nm) for all of the copolymers. The variations in domain size and intersphere distance as a function of molecular weight were found to be in good agreement with those determined by the more established SAXS methods. However, the intersphere distances measured by NMR were found to be consistently smaller than those measured by SAXS, and this difference may be caused by simplifications in the morphological model used in the analysis of the spin diffusion curves.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Microscopy and Microanalysis Publications
 
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Created: Tue, 01 Mar 2011, 16:33:25 EST by Dr Kevin Jack on behalf of Centre for Microscopy and Microanalysis