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Crystalline Carbosilane‐Based Block Copolymers: Synthesis by Anionic Polymerization and Morphology Evaluation in the Bulk State

Hübner, Hanna ; Niebuur, Bart‐Jan ; Janka, Oliver ; Gemmer, Lea ; Koch, Marcus ; Kraus, Tobias ; Kickelbick, Guido ; Stühn, Bernd ; Gallei, Markus (2023)
Crystalline Carbosilane‐Based Block Copolymers: Synthesis by Anionic Polymerization and Morphology Evaluation in the Bulk State.
In: Macromolecular Chemistry and Physics, 2022, 224 (3)
doi: 10.26083/tuprints-00023743
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Item Type: Article
Type of entry: Secondary publication
Title: Crystalline Carbosilane‐Based Block Copolymers: Synthesis by Anionic Polymerization and Morphology Evaluation in the Bulk State
Language: English
Date: 28 April 2023
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: Wiley-VCH
Journal or Publication Title: Macromolecular Chemistry and Physics
Volume of the journal: 224
Issue Number: 3
Collation: 10 Seiten
DOI: 10.26083/tuprints-00023743
Corresponding Links:
Origin: Secondary publication DeepGreen
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.

Uncontrolled Keywords: anionic polymerization, confinement, crystallization, microphase separation, morphology
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-237436
Classification DDC: ?? ddc_dnb_530 ??
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Date Deposited: 28 Apr 2023 12:38
Last Modified: 14 Nov 2023 19:05
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23743
PPN: 509899080
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