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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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Shaver, Michael P.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Performance polyamides built on a sustainable carbohydrate corecitations
- 2024Mechanical Properties and Recyclability of Fibre Reinforced Polyester Compositescitations
- 2023Degradable and Reprocessable Resins from a Dioxolanone Cross-Linkercitations
- 2023Understanding poly(ethylene terephthalate) degradation using gas-mediated simulated recyclingcitations
- 2020Mechanical Recycling of Packaging Plastics: A Reviewcitations
- 2018Polymeric hole-transport materials with side-chain redox-active groups for perovskite solar cells with good reproducibilitycitations
- 2018Polymeric hole-transport materials with side-chain redox-active groups for perovskite solar cells with good reproducibilitycitations
- 2018Thermal, optical and structural properties of blocks and blends of PLA and P2HEBcitations
- 2018Functionalizable Stereocontrolled Cyclopolyethers by Ring-Closing Metathesis as Natural Polymer Mimicscitations
- 2018Morphology of Poly(styrene-co-butadiene) Random Copolymer Thin Films and Nanostructures on a Graphite Surfacecitations
- 2017Thermal, structural and degradation properties of an aromatic-aliphatic polyester built through ring-opening polymerisationcitations
- 2017Poly(styrene-co-butadiene) Random Copolymer Thin Films and Nanostructures on a Mica Surface: Morphology and Contact Angles of Nanodropletscitations
- 2017Olefin cross metathesis and ring-closing metathesis in polymer chemistrycitations
- 2016Installing Multiple Functional Groups on Biodegradable Polyesters via Post-Polymerization Olefin Cross-Metathesiscitations
- 2015Aluminum Salen and Salan Polymerization Catalystscitations
- 2014Tuning ligand electronics and peripheral substitution on cobalt salen complexes:Structure and polymerisation activitycitations
- 2014Tuning ligand electronics and peripheral substitution on cobalt salen complexescitations
- 2013Aluminium salophen and salen initiators in the ring-opening polymerisation of rac-lactide and rac-β-butyrolactone::Electronic effects on stereoselectivity and polymerisation ratescitations
- 2013Poly(lactic acid) polymer stars built from early generation dendritic polyolscitations
- 2013Tacticity-induced changes in the micellization and degradation properties of poly(lactic acid)-block-poly(ethylene glycol) copolymerscitations
- 2013Aluminium salophen and salen initiators in the ring-opening polymerisation of rac-lactide and rac-β-butyrolactone:citations
- 2012Control of thermal properties and hydrolytic degradation in poly(lactic acid) polymer stars through control of isospecificity of polymer armscitations
- 2012Anilido-aldimine aluminum complexes:citations
- 2012Controlled radical polymerization mediated by Amine-Bis(phenolate) Iron(III) complexescitations
- 2012Anilido-aldimine aluminum complexes::Synthesis, characterization and lactide polymerizationcitations
- 2010Tacticity control in the synthesis of poly(lactic acid) polymer stars with dipentaerythritol corescitations
- 20084.4,5,5-tetraphenyl-1,3,2-dioxaborolanecitations
- 2000Trans alkenylpyridine and alkenylamine complexes of platinum
Places of action
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article
Poly(styrene-co-butadiene) Random Copolymer Thin Films and Nanostructures on a Mica Surface: Morphology and Contact Angles of Nanodroplets
Abstract
The self-assembly of poly(styrene-co-butadiene) random copolymers on mica surfaces was studied by varying solution concentrations and polymer molecular weights. Toluene solutions of the poly(styrene-co-butadiene) samples were spin coated onto a mica surface and the resulting polymer morphology was investigated by atomic force microscopy. At higher concentrations, thin films formed with varying thicknesses; some dewetting was observed which depended on molecular weight. Total dewetting did not occur despite the polymer’s low glass transition temperature. Instead, partial dewetting was observed suggesting the polymer was in a metastable equilibrium state. At lower concentrations, spherical cap shaped nanodroplets formed with varying sizes from single polymer chains to aggregates containing millions of chains. As molecular weight was increased, fewer aggregates were observed on the surface, albeit with larger sizes resulting from increased solution viscosities and more chain entanglements at higher molecular weights. The contact angles of the nanodroplets were shown to be size dependent. A minimum contact angle occurs for droplets with radii of 100 nm – 250 nm at each molecular weight. Droplets smaller than 100 nm showed a sharp increase in contact angle; attributed to an increase in elastic modulus of the droplets, in addition, to a positive line tension value. Droplets larger than 250 nm also showed an increased contact angle due to surface heterogeneities which cannot be avoided for larger droplets. This increase in contact angle plateaus as the droplet size reaches the macroscopic scale.