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Phase behavior and nanomechanical mapping of block ionomer complexes

Wu, Shuying, Guo, Qipeng, Zhang, Taiye and Mai, Yiu-Wing 2013, Phase behavior and nanomechanical mapping of block ionomer complexes, Soft matter, vol. 9, no. 9, pp. 2662-2672.

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Title Phase behavior and nanomechanical mapping of block ionomer complexes
Author(s) Wu, Shuying
Guo, Qipeng
Zhang, Taiye
Mai, Yiu-Wing
Journal name Soft matter
Volume number 9
Issue number 9
Start page 2662
End page 2672
Total pages 11
Publisher Royal Society of Chemistry
Place of publication Cambridge, England
Publication date 2013
ISSN 1744-683X
1744-6848
Keyword(s) block ionomer complexes
crystallization behavior
multiphase materials
nanomechanical mappings
nanomechanical property
quantitative mapping
small angle X-ray scattering
sulfonic acid groups
engineering controlled terms : atomic force microscopy
butenes
crystallization
ethylene
mechanical properties
phase structure engineering main heading : polystyrenes
Summary Block ionomer complexes SSEBS-c-PCL were prepared, as a consequence of proton transfer from the sulfonic acid of sulfonated polystyrene-block- poly(ethylene-ran-butylene)-block-polystyrene (SSEBS) to the tertiary amine of a tertiary amine terminated poly(?-caprolactone) (APCL). The phase behavior of SSEBS-c-PCL was thoroughly investigated and the results showed that APCL in SSEBS-c-PCL displays unique crystallization behavior owing to the influence of interactions between the amine and sulfonic acid groups as well as the effects of confinement. Further, small-angle X-ray scattering study revealed that SSEBS-c-PCL displays a less ordered micro-phase structure compared to SSEBS. A quantitative mapping of mechanical properties at the nanoscale was achieved using peak force mode atomic force microscopy. It is found that the block ionomer complex possesses a higher average elastic modulus after complexation with crystallizable APCL. Additionally, the moduli for both hard and soft phases increase and the phase with higher modulus assignable to the hard SPS component shows much more pronounced changes after complexation, confirming that APCL interacts mainly with the SPS blocks. This provides an understanding of the composition and nanomechanical properties of these new block ionomer complexes and an alternative insight into the micro-phase structures of multi-phase materials.
Language eng
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2013, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30057695

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.