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doi:10.22028/D291-39034
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 |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
---|---|---|---|---|
Macro Chemistry Physics - 2022 - H bner - Crystalline Carbosilane‐Based Block Copolymers Synthesis by Anionic.pdf | 2,11 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons