The segmental and global dynamics in lamellar microphase-separated poly(styrene-b-isoprene) diblock copolymer studied by 1H NMR and dielectric spectroscopy
Authors:
- Jacek Jenczyk,
- Maria Dobies,
- Monika Makrocka-Rydzyk,
- Aleksandra Barbara Wypych,
- Stefan Jurga
Abstract
The nuclear magnetic resonance (NMR) and dielectric spectroscopy (DS) methods were used to investigate the segmental and global dynamics in lamellar microphase separated poly(styrene-b-isoprene) (SI) diblock copolymer. For the first time, the susceptibility representation of the NMR relaxation data is applied to the analysis of the molecular dynamics in complex polymer systems like the diblock copolymer. This approach in combination with the frequency-temperature superposition (FTS) allows one to compare directly the NMR and DS data in an extended frequency range providing a unique comprehensive picture of various relaxation processes present in the system studied. The findings of these investigations include structural relaxations of the polyisoprene (PI) and the polystyrene (PS) blocks, a normal mode relaxation of the PI block, and an extra low frequency interfacial relaxation. Special attention has been devoted to influence of the copolymer morphology on the segmental and global dynamics in PI. © 2013 Elsevier Ltd. All rights reserved.
- Record ID
- UAM415281bc45b64ef69cbb6cf0419d3769
- Author
- Journal series
- European Polymer Journal, ISSN 0014-3057
- Issue year
- 2013
- Vol
- 49
- No
- 12
- Pages
- 3986-3997
- ASJC Classification
- ; ;
- DOI
- DOI:10.1016/j.eurpolymj.2013.09.003 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 35
- Score source
- journalList
- Score
- Publication indicators
- = 10; = 11; : 2013 = 1.660; : 2013 (2 years) = 3.242 - 2013 (5 years) =3.245
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- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAM415281bc45b64ef69cbb6cf0419d3769/
- URN
urn:amu-prod:UAM415281bc45b64ef69cbb6cf0419d3769
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.