Influence of network structure on the crystallization behavior in chemically crosslinked hydrogels

dc.contributor.authorZhang, Zhenfang
dc.contributor.authorLi, Qian
dc.contributor.authorYesildag, Cigdem
dc.contributor.authorBartsch, Christoph
dc.contributor.authorZhang, Xiaoyuan
dc.contributor.authorLiu, Wei
dc.contributor.authorLoebus, Axel
dc.contributor.authorSu, Zhiqiang
dc.contributor.authorLensen, Marga C.
dc.date.accessioned2018-09-13T11:46:10Z
dc.date.available2018-09-13T11:46:10Z
dc.date.issued2018-09-01
dc.description.abstractThe network structure of hydrogels is a vital factor to determine their physical properties. Two network structures within hydrogels based on eight-arm star-shaped poly(ethylene glycol)(8PEG) have been obtained; the distinction between the two depends on the way in which the macromonomers were crosslinked: either by (i) commonly-used photo-initiated chain-growth polymerization (8PEG–UV), or (ii) Michael addition step-growth polymerization (8PEG–NH3). The crystallization of hydrogels is facilitated by a solvent drying process to obtain a thin hydrogel film. Polarized optical microscopy (POM) results reveal that, while in the 8PEG–UV hydrogels only nano-scaled crystallites are apparent, the 8PEG–NH3 hydrogels exhibit an assembly of giant crystalline domains with spherulite sizes ranging from 100 to 400 µm. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) analyses further confirm these results. A model has been proposed to elucidate the correlations between the polymer network structures and the crystallization behavior of PEG-based hydrogels.en
dc.description.sponsorshipDFG, 325093850, Open Access Publizieren 2017 - 2018 / Technische Universität Berlinde
dc.identifier.eissn2073-4360
dc.identifier.urihttps://depositonce.tu-berlin.de//handle/11303/8185
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-7340
dc.language.isoenen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftende
dc.subject.othercrystallizationen
dc.subject.otherPEG-based hydrogelsen
dc.subject.othernetwork structureen
dc.subject.otherstep-growth polymerizationen
dc.titleInfluence of network structure on the crystallization behavior in chemically crosslinked hydrogelsen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.articlenumber970en
dcterms.bibliographicCitation.doi10.3390/polym10090970en
dcterms.bibliographicCitation.issue9en
dcterms.bibliographicCitation.journaltitlePolymersen
dcterms.bibliographicCitation.originalpublishernameMDPIen
dcterms.bibliographicCitation.originalpublisherplaceBaselen
dcterms.bibliographicCitation.volume10en
tub.accessrights.dnbfreeen
tub.affiliationFak. 2 Mathematik und Naturwissenschaften>Inst. Chemie>FG Nanostrukturierte Biomaterialiende
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.groupFG Nanostrukturierte Biomaterialiende
tub.affiliation.instituteInst. Chemiede
tub.publisher.universityorinstitutionTechnische Universität Berlinen
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