000864692 001__ 864692 000864692 005__ 20210130002702.0 000864692 0247_ $$2doi$$a10.1039/C9SM01161G 000864692 0247_ $$2ISSN$$a1744-683X 000864692 0247_ $$2ISSN$$a1744-6848 000864692 0247_ $$2Handle$$a2128/22694 000864692 0247_ $$2altmetric$$aaltmetric:63670845 000864692 0247_ $$2pmid$$apmid:31355828 000864692 0247_ $$2WOS$$aWOS:000481424100008 000864692 037__ $$aFZJ-2019-04386 000864692 082__ $$a530 000864692 1001_ $$0P:(DE-Juel1)171604$$aKyrey, Tetyana$$b0$$eCorresponding author 000864692 245__ $$aInner structure and dynamics of microgels with low and medium crosslinker content prepared via surfactant-free precipitation polymerization and continuous monomer feeding approach 000864692 260__ $$aLondon$$bRoyal Soc. of Chemistry$$c2019 000864692 3367_ $$2DRIVER$$aarticle 000864692 3367_ $$2DataCite$$aOutput Types/Journal article 000864692 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1568018783_22203 000864692 3367_ $$2BibTeX$$aARTICLE 000864692 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000864692 3367_ $$00$$2EndNote$$aJournal Article 000864692 520__ $$aThe preparation of poly(N-isopropylacrylamide) microgels via classical precipitation polymerization (batch method) and a continuous monomer feeding approach (feeding method) leads to different internal crosslinker distributions, i.e., from core–shell-like to a more homogeneous one. The internal structure and dynamics of these microgels with low and medium crosslinker concentrations are studied with dynamic light scattering and small-angle neutron scattering in a wide q-range below and above the volume phase transition temperature. The influence of the preparation method, and crosslinker and initiator concentration on the internal structure of the microgels is investigated. In contrast to the classical conception where polymer microgels possess a core–shell structure with the averaged internal polymer density distribution within the core part, a detailed view of the internal inhomogeneities of the PNIPAM microgels and the presence of internal domains even above the volume phase transition temperature, when polymer microgels are in the deswollen state, are presented. The correlation between initiator concentration and the size of internal domains that appear inside the microgel with temperature increase is demonstrated. Moreover, the influence of internal inhomogeneities on the dynamics of the batch- and feeding-microgels studied with neutron spin-echo spectroscopy is reported. 000864692 536__ $$0G:(DE-HGF)POF3-6215$$a6215 - Soft Matter, Health and Life Sciences (POF3-621)$$cPOF3-621$$fPOF III$$x0 000864692 536__ $$0G:(DE-HGF)POF3-6G4$$a6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)$$cPOF3-623$$fPOF III$$x1 000864692 588__ $$aDataset connected to CrossRef 000864692 65027 $$0V:(DE-MLZ)SciArea-210$$2V:(DE-HGF)$$aSoft Condensed Matter$$x0 000864692 65017 $$0V:(DE-MLZ)GC-1602-2016$$2V:(DE-HGF)$$aPolymers, Soft Nano Particles and Proteins$$x0 000864692 693__ $$0EXP:(DE-MLZ)KWS1-20140101$$1EXP:(DE-MLZ)FRMII-20140101$$5EXP:(DE-MLZ)KWS1-20140101$$6EXP:(DE-MLZ)NL3b-20140101$$aForschungs-Neutronenquelle Heinz Maier-Leibnitz $$eKWS-1: Small angle scattering diffractometer$$fNL3b$$x0 000864692 693__ $$0EXP:(DE-MLZ)KWS2-20140101$$1EXP:(DE-MLZ)FRMII-20140101$$5EXP:(DE-MLZ)KWS2-20140101$$6EXP:(DE-MLZ)NL3ao-20140101$$aForschungs-Neutronenquelle Heinz Maier-Leibnitz $$eKWS-2: Small angle scattering diffractometer$$fNL3ao$$x1 000864692 693__ $$0EXP:(DE-MLZ)KWS3-20140101$$1EXP:(DE-MLZ)FRMII-20140101$$5EXP:(DE-MLZ)KWS3-20140101$$6EXP:(DE-MLZ)NL3auS-20140101$$aForschungs-Neutronenquelle Heinz Maier-Leibnitz $$eKWS-3: Very small angle scattering diffractometer with focusing mirror$$fNL3auS$$x2 000864692 693__ $$0EXP:(DE-MLZ)J-NSE-20140101$$1EXP:(DE-MLZ)FRMII-20140101$$5EXP:(DE-MLZ)J-NSE-20140101$$6EXP:(DE-MLZ)NL2ao-20140101$$aForschungs-Neutronenquelle Heinz Maier-Leibnitz $$eJ-NSE: Neutron spin-echo spectrometer$$fNL2ao$$x3 000864692 7001_ $$00000-0003-4780-8675$$aWitte, Judith$$b1 000864692 7001_ $$0P:(DE-Juel1)144382$$aFeoktystov, Artem$$b2 000864692 7001_ $$0P:(DE-Juel1)130893$$aPipich, Vitaliy$$b3 000864692 7001_ $$0P:(DE-Juel1)151161$$aWu, Baohu$$b4$$ufzj 000864692 7001_ $$0P:(DE-Juel1)145049$$aPasini, Stefano$$b5 000864692 7001_ $$0P:(DE-Juel1)130905$$aRadulescu, Aurel$$b6 000864692 7001_ $$00000-0001-6615-2865$$aWitt, Marcus U.$$b7 000864692 7001_ $$0P:(DE-Juel1)130777$$aKruteva, Margarita$$b8 000864692 7001_ $$00000-0003-0555-5104$$avon Klitzing, Regine$$b9 000864692 7001_ $$0P:(DE-HGF)0$$aWellert, Stefan$$b10 000864692 7001_ $$0P:(DE-Juel1)130718$$aHolderer, Olaf$$b11 000864692 773__ $$0PERI:(DE-600)2191476-X$$a10.1039/C9SM01161G$$gVol. 15, no. 32, p. 6536 - 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