Home > Publications database > The molecular origin of stress generation in worm-like micelles, using a rheo-SANS LAOS approach > print

001     21988
005     20240619083347.0
024 7 _ |2 DOI
|a 10.1039/c2sm25569c
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082 _ _ |a 530
084 _ _ |2 WoS
|a Chemistry, Physical
084 _ _ |2 WoS
|a Materials Science, Multidisciplinary
084 _ _ |2 WoS
|a Physics, Multidisciplinary
084 _ _ |2 WoS
|a Polymer Science
100 1 _ |0 P:(DE-Juel1)VDB102813
|a Rogers, S.
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|u FZJ
245 _ _ |a The molecular origin of stress generation in worm-like micelles, using a rheo-SANS LAOS approach
260 _ _ |a Cambridge
|b Royal Society of Chemistry (RSC)
|c 2012
300 _ _ |a 3831 - 3839
336 7 _ |a Journal Article
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440 _ 0 |0 16881
|a Soft Matter
|v 8
|x 1744-683X
|y 30
500 _ _ |a Financial support by the German Research Foundation within SFB TR 6, and the European Network Nanodirect (grant no. NMP4-SL-2008-213948). The authors thank P. Ballesta for fruitful discussions.
520 _ _ |a We combine large-amplitude oscillatory shear (LAOS) and time-resolved small angle neutron scattering (t-SANS) measurements on the dynamic response of a dispersion of surfactant worm-like micelles. By viewing the response as being the result of a sequence of physical processes, we observe new features of the system response. We identify three distinct frequency regimes including a high frequency Maxwell-like, a yielding, and a settled flow regime. For each regime we identify the molecular origins, on a Kuhn segment scale, of the stress response. We show the ability of the material to 'over-orient' pre-yielding, compared with stationary flow. Finally, we present a stress-orientation rule which is rate-based at low frequencies and strain-based at high frequencies.
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|a Kohlbrecher, J.
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|a Lettinga, M.P.
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|g Vol. 8, p. 3831 - 3839
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|t Soft matter
|v 8
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|y 2012
856 7 _ |u http://dx.doi.org/10.1039/c2sm25569c
856 4 _ |u https://juser.fz-juelich.de/record/21988/files/4633.pdf
|y OpenAccess
856 4 _ |u https://juser.fz-juelich.de/record/21988/files/FZJ-21988.pdf
|y Published under German "Allianz" Licensing conditions on 2012-06-27. Available in OpenAccess from 2013-06-27
|z Published final document.
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