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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Darko, Charles
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Publications (5/5 displayed)
- 2021An Introduction To Conventional Tensile Testing: Constructionism Approach For Constructivism Learningcitations
- 2011Surface-induced breakout crystallisation in cylinder-forming P(I-b-EO) diblock copolymer thin filmscitations
- 2009Probing the Self-Organization Kinetics in Block Copolymer Films
- 2009Crystallization in diblock copolymer thin films at different degrees of supercoolingcitations
- 2007Structural changes of thin films from recombinant spider silk proteins upon post-treatment
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article
Surface-induced breakout crystallisation in cylinder-forming P(I-b-EO) diblock copolymer thin films
Abstract
We have found very slow crystallization in thin films of cylinder-forming poly(isoprene- b -ethyleneoxide) (P(I- b -EO)) diblock copolymers with PEO being the minority block. The film was crystallized at room temperature after melting at 62 ° C . Imaging methods were combined with X-ray reflectometry and grazing-incidence small-angle X-ray scattering and diffraction. Initially, hexagonally packed, amorphous PEO cylinders lie in the film plane. After 148 days, crystallized, finger-like terraces were observed over the entire film surface. The terrace height is 20% higher than the repeat distance in the as-prepared film. Thus, at the film surface, the cylinders have been destroyed by crystalline lamellae lying in the film plane. The PEO chain stems are perpendicular to the substrate surface and are once-folded and fully interdigitated. The substrate-near layers still consist of the hexagonally packed, amorphous PEO cylinders within the PI matrix.