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Morphology and confinement effects on crystallization kinetics in polyethylene containing block copolymers

Title data

Safari, Maryam ; Ocando, Connie ; Liao, Yilong ; Drechsler, Markus ; Volk, Nina ; Schaller, Roman ; Held, Martin ; Abetz, Volker ; Schmalz, Holger ; Müller, Alejandro J.:
Morphology and confinement effects on crystallization kinetics in polyethylene containing block copolymers.
In: Polymer. Vol. 298 (2024) . - 126863.
ISSN 0032-3861

Project information

Project financing: Andere

Abstract in another language

This paper investigates the morphology and crystallization kinetics of polyethylene (PE) containing block copolymers, differing in block number (di- vs. triblock copolymers) and composition (ABA triblock co- vs. ABC triblock terpolymers). In these block copolymers, the crystallizable PE block is linked to amorphous poly(methyl methacrylate) (PMMA) and/or polystyrene (PS) blocks, and for one triblock terpolymer, poly(ethylene oxide) (PEO) was introduced as an additional crystallizable block. The topological confinement exerted by the covalent linkage of PE to the other blocks (glassy PMMA and PS, PEO) in combination with the morphological confinement into different PE microdomains (cylinders, lamella) significantly influence the crystallization behavior, resulting in slower crystallization kinetics compared to pure PE. The strongest effects were observed for triblock terpolymers, where the lamellar PE domains are disrupted by PS cylinders or distorted PS domains. This research enhances our understanding of block copolymers with confined crystallizable segments, aiding in tailored material design.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Profile Fields > Advanced Fields > Polymer and Colloid Science
Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI)
Graduate Schools > Bayreuth Graduate School of Mathematical and Natural Sciences (BayNAT) > Polymer Science
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 18 Mar 2024 07:42
Last Modified: 18 Mar 2024 10:05