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000007863 084__ $$2WoS$$aPolymer Science
000007863 1001_ $$0P:(DE-Juel1)131056$$aZamponi, M.$$b0$$uFZJ
000007863 245__ $$aMolecular observation of branch point motion in star polymer melts
000007863 260__ $$aWashington, DC$$bSoc.$$c2010
000007863 300__ $$a518 - 524
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000007863 520__ $$aUsing neutron spin echo (NSE) spectroscopy and a labeling scheme unique to neutron scattering the motion of it labeled branch point of a three-arm polyethylene star has been observed oil a molecular level. The measured dynamic structure factor shows a clear transition to a Plateau, Signifying the stronger confinement of the star center in comparison to a corresponding center labeled linear chain. A shortening of one star arm to about only one entanglement length leads to the same topological confinement as for the symmetric star within the accessible time range of NSE. This reflects it stronger effect of such it small branch than expected and is consistent with rheological measurements on the same system.
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000007863 7001_ $$0P:(DE-Juel1)131040$$aWischnewski, A.$$b2$$uFZJ
000007863 7001_ $$0P:(DE-Juel1)VDB2684$$aMonkenbusch, M.$$b3$$uFZJ
000007863 7001_ $$0P:(DE-Juel1)VDB4260$$aWillner, L.$$b4$$uFZJ
000007863 7001_ $$0P:(DE-HGF)0$$aKali, G.$$b5
000007863 7001_ $$0P:(DE-Juel1)130917$$aRichter, D.$$b6$$uFZJ
000007863 773__ $$0PERI:(DE-600)1491942-4$$a10.1021/ma9017185$$gVol. 43, p. 518 - 524$$n1$$p518 - 524$$q43<518 - 524$$tMacromolecules$$v43$$x0024-9297$$y2010
000007863 8567_ $$uhttp://dx.doi.org/10.1021/ma9017185
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000007863 9131_ $$0G:(DE-Juel1)FUEK415$$bStruktur der Materie$$kP55$$lGroßgeräteforschung mit Photonen, Neutronen und Ionen$$vGroßgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI)$$x1
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