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Titel: Crystalline Carbosilane‐Based Block Copolymers: Synthesis by Anionic Polymerization and Morphology Evaluation in the Bulk State
VerfasserIn: Hübner, Hanna
Niebuur, Bart‐Jan
Janka, Oliver
Gemmer, Lea
Koch, Marcus
Kraus, Tobias
Kickelbick, Guido
Stühn, Bernd
Gallei, Markus
Sprache: Englisch
Titel: Macromolecular Chemistry and Physics
Bandnummer: 224 (2023)
Heft: 3
Verlag/Plattform: Wiley
Erscheinungsjahr: 2022
Freie Schlagwörter: anionic polymerization
confinement
crystallization
microphase separation
morphology
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Block copolymers (BCPs) in the bulk state are known to self-assemble into different morphologies depending on their polymer segment ratio. For polymers with amorphous and crystalline BCP segments, the crystallization process can be influenced significantly by the corresponding bulk morphology. Herein, the synthesis of the amorphous-crystalline BCP poly(dimethyl silacyclobutane)-block-poly(2vinyl pyridine), (PDMSB-b-P2VP), by living anionic polymerization is reported. Polymers with overall molar masses ranging from 17 400 g to 592 200 g mol−1 and PDMSB contents of 4.8–83.9 vol% are synthesized and characterized by size-exclusion chromatography and NMR spectroscopy. The bulk morphology of the obtained polymers is investigated by means of transmission electron microscopy and small angle X-ray scattering, revealing a plethora of self-assembled structures, providing confined and nonconfined conditions. Subsequently, the influence of the previously determined morphologies and their resulting confinement on the crystallinity and crystallization behavior of PDMSB is analyzed via differential scanning calorimetry and powder X-ray diffraction. Here, fractionated crystallization and supercooling effects are observable as well as different diffraction patterns of the PDMSB crystallites for confined and nonconfined domains.
DOI der Erstveröffentlichung: 10.1002/macp.202200178
URL der Erstveröffentlichung: https://onlinelibrary.wiley.com/doi/10.1002/macp.202200178
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-390344
hdl:20.500.11880/35206
http://dx.doi.org/10.22028/D291-39034
ISSN: 1521-3935
1022-1352
Datum des Eintrags: 14-Feb-2023
Bezeichnung des in Beziehung stehenden Objekts: Supporting Information
In Beziehung stehendes Objekt: https://onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fmacp.202200178&file=macp202200178-sup-0001-SuppMat.pdf
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Chemie
Professur: NT - Prof. Dr. Markus Gallei
NT - Prof. Dr. Guido Kickelbick
NT - Prof. Dr. Tobias Kraus
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes



Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons Creative Commons