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000187538 1001_ $$0P:(DE-HGF)0$$aKyriakos, Konstantinos$$b0$$eCorresponding Author
000187538 245__ $$aNovel thermoresponsive block copolymers having different architectures—structural, rheological, thermal, and dielectric investigations
000187538 260__ $$aBerlin$$bSpringer$$c2014
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000187538 520__ $$aThermoresponsive block copolymers comprising long, hydrophilic, nonionic poly(methoxy diethylene glycol acrylate) (PMDEGA) blocks and short hydrophobic polystyrene (PS) blocks are investigated in aqueous solution. Various architectures, namely diblock, triblock, and starblock copolymers are studied as well as a PMDEGA homopolymer as reference, over a wide concentration range. For specific characterization methods, polymers were labeled, either by partial deuteration (for neutron scattering studies) or by fluorophores. Using fluorescence correlation spectroscopy, critical micellization concentrations are identified and the hydrodynamic radii of the micelles, r h mic , are determined. Using dynamic light scattering, the behavior of r h mic in dependence on temperature and the cloud points are measured. Small-angle neutron scattering enabled the detailed structural investigation of the micelles and their aggregates below and above the cloud point. Viscosity measurements are carried out to determine the activation energies in dependence on the molecular architecture. Differential scanning calorimetry at high polymer concentration reveals the glass transition of the polymers, the fraction of uncrystallized water and effects of the phase transition at the cloud point. Dielectric relaxation spectroscopy shows that the polarization changes reversibly at the cloud point, which reflects the formation of large aggregates upon heating through the cloud point and their redissolution upon cooling.
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000187538 65017 $$0V:(DE-MLZ)GC-1602-2016$$2V:(DE-HGF)$$aPolymers, Soft Nano Particles and  Proteins$$x2
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000187538 7001_ $$0P:(DE-HGF)0$$aAravopoulou, Dionysia$$b1
000187538 7001_ $$0P:(DE-HGF)0$$aAugsbach, Lukas$$b2
000187538 7001_ $$0P:(DE-HGF)0$$aSapper, Josef$$b3
000187538 7001_ $$0P:(DE-HGF)0$$aOttinger, Sarah$$b4
000187538 7001_ $$0P:(DE-HGF)0$$aPsylla, Christina$$b5
000187538 7001_ $$0P:(DE-HGF)0$$aAghebat Rafat, Ali$$b6
000187538 7001_ $$0P:(DE-HGF)0$$aBenitez-Montoya, Carlos Adrian$$b7
000187538 7001_ $$0P:(DE-HGF)0$$aMiasnikova, Anna$$b8
000187538 7001_ $$0P:(DE-Juel1)141663$$aDi, Zhenyu$$b9$$ufzj
000187538 7001_ $$0P:(DE-HGF)0$$aLaschewsky, André$$b10
000187538 7001_ $$0P:(DE-HGF)0$$aMüller-Buschbaum, Peter$$b11
000187538 7001_ $$0P:(DE-HGF)0$$aKyritsis, Apostolos$$b12
000187538 7001_ $$0P:(DE-HGF)0$$aPapadakis, Christine M.$$b13
000187538 773__ $$0PERI:(DE-600)1462029-7$$a10.1007/s00396-014-3282-0$$gVol. 292, no. 8, p. 1757 - 1774$$n8$$p1757 - 1774$$tColloid & polymer science$$v292$$x1435-1536$$y2014
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