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Polymer Bulletin
Erschienen in: Polymer Bulletin 1/2019

28.05.2018 | Original Paper

Phase separation and surface properties of poly(propyl methacrylate-b-methyl methacrylate) diblock copolymers

verfasst von: Doris Pospiech, Renata Choińska, Kathrin Eckstein, Dieter Jehnichen, Liane Häußler, Peter Friedel, Frank Simon, Uta Reuter, Brigitte Voit

Erschienen in: Polymer Bulletin | Ausgabe 1/2019

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Abstract

The phase separation and surface characteristics of poly(propyl methacrylate-b-methyl methacrylate) (PPrMA-b-PMMA) diblock copolymers were studied and compared to strongly phase-separated poly(pentyl methacrylate-b-methyl methacrylate) (PPMA-b-PMMA) block copolymers (BCPs). PPrMA-b-PMMA with varied compositions and molar masses was synthesized by living anionic polymerization. The phase separation was studied by DSC, SAXS, TEM and AFM. The experimental data were compared to the calculated phase diagram. PPrMA-b-PMMA BCPs were weakly phase-separated, and indications for the existence of a relative broad interface between the blocks were observed. Nevertheless, two ordered morphologies—hexagonally packed cylinders and lamellae—depending on the molar composition were distinguished. The phase separation in thin films was studied by AFM in comparison with PPMA-b-PMMA. The wetting behavior of the thin films was examined by contact angle measurements. The water contact angles on PPrMA-b-PMMA were clearly influenced by both blocks. XPS confirmed the presence of both blocks in the top surface layer, which was different to PPMA-b-PMMA diblock copolymers where the top layer consisted only of PPMA blocks. Thus, only the weakly phase-separated PPrMA-b-PMMA BCP system allowed the generation of phase-separated films with tunable wetting characteristics.
Vorheriger Artikel Glass fiber-reinforced epoxy composite with surface-modified graphene oxide: enhancement of interlaminar fracture toughness and thermo-mechanical performance
Nächster Artikel PBAT/organoclay composite films—part 2: effect of UV aging on permeability, mechanical properties and biodegradation

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Metadaten
Titel
Phase separation and surface properties of poly(propyl methacrylate-b-methyl methacrylate) diblock copolymers
verfasst von
Doris Pospiech
Renata Choińska
Kathrin Eckstein
Dieter Jehnichen
Liane Häußler
Peter Friedel
Frank Simon
Uta Reuter
Brigitte Voit
Publikationsdatum
28.05.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
Polymer Bulletin / Ausgabe 1/2019
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-018-2383-1

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