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“Patchy” Carbon Nanotubes as Efficient Compatibilizers for Polymer Blends

Title data

Gegenhuber, Thomas ; Krekhova, Marina ; Schöbel, Judith ; Gröschel, André H. ; Schmalz, Holger:
“Patchy” Carbon Nanotubes as Efficient Compatibilizers for Polymer Blends.
Department of Applied Physics, Aalto University School of Science, 00076 Aalto, Finland
In: ACS Macro Letters. Vol. 5 (2016) Issue 3 . - pp. 306-310.
ISSN 2161-1653
DOI: https://doi.org/10.1021/acsmacrolett.6b00033

Project information

Project financing: Deutsche Forschungsgemeinschaft
Elite Network Bavaria within the elite program “Macromolecular Science”
Academy of Finland’s Centre of Excellence Program (2014-2019)
ERC-2011-AdG (291364-MIMEFUN)

Abstract in another language

Surface-modified carbon nanotubes (CNTs) have become well-established filler materials for polymer nanocomposites. However, in immiscible polymer blends, the CNT-coating is selective toward the more compatible phase, which suppresses their homogeneous distribution and limits harnessing the full potential of the filler. In this study, we show that multiwalled CNTs with a patchy polystyrene/poly(methyl methacrylate) (PS/PMMA) corona disperse equally well in both phases of an incompatible PS/PMMA polymer blend. Unlike polymer-grafted CNTs with a uniform corona, the patchy CNTs are able to adjust their corona structure to the blend phases by selective swelling/collapse of respective miscible/immiscible surface patches. Importantly, the high interfacial activity of patchy CNTs further causes a significant decrease in PMMA droplet size with increasing filler content. The combined effect of compatibilization and homogeneous distribution makes patchy CNTs interesting materials for polymer blend nanocomposites, where next to the compatibilization, a homogeneous filler distribution is important to gain the desired materials property (e.g., reinforcement).

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
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 12 Dec 2019 08:20
Last Modified: 12 Dec 2019 08:20
URI: https://eref.uni-bayreuth.de/id/eprint/53561