Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution
Abstract The formation of complex structures in thin films is of interest in many fields. Segregation of polymer chains of different molecular weights is a well-known process. However, here, polystyrene with bimodal molecular weight distribution, but no additional chemical modification was used. It...
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Nature Portfolio
2021
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oai:doaj.org-article:138fbba2a3884b5393de93761958bf812021-12-02T18:02:55ZWater vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution10.1038/s41598-021-92594-12045-2322https://doaj.org/article/138fbba2a3884b5393de93761958bf812021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92594-1https://doaj.org/toc/2045-2322Abstract The formation of complex structures in thin films is of interest in many fields. Segregation of polymer chains of different molecular weights is a well-known process. However, here, polystyrene with bimodal molecular weight distribution, but no additional chemical modification was used. It was proven that at certain conditions, the phase separation occurred between two fractions of bimodal polystyrene/methyl ethyl ketone solution. The films were prepared by spin-coating, and the segregation between polystyrene phases was investigated by force spectroscopy. Next, water vapour induced secondary phase separation was investigated. The introduction of moist airflow induced the self-assembly of the lower molecular weight into islands and the heavier fraction into a honeycomb. As a result, an easy, fast, and effective method of obtaining island/honeycomb morphologies was demonstrated. The possible mechanisms of the formation of such structures were discussed.Maciej ŁojkowskiAdrian ChlandaEmilia ChoińskaWojciech SwieszkowskiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-18 (2021) |
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Medicine R Science Q |
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Medicine R Science Q Maciej Łojkowski Adrian Chlanda Emilia Choińska Wojciech Swieszkowski Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution |
| description |
Abstract The formation of complex structures in thin films is of interest in many fields. Segregation of polymer chains of different molecular weights is a well-known process. However, here, polystyrene with bimodal molecular weight distribution, but no additional chemical modification was used. It was proven that at certain conditions, the phase separation occurred between two fractions of bimodal polystyrene/methyl ethyl ketone solution. The films were prepared by spin-coating, and the segregation between polystyrene phases was investigated by force spectroscopy. Next, water vapour induced secondary phase separation was investigated. The introduction of moist airflow induced the self-assembly of the lower molecular weight into islands and the heavier fraction into a honeycomb. As a result, an easy, fast, and effective method of obtaining island/honeycomb morphologies was demonstrated. The possible mechanisms of the formation of such structures were discussed. |
| format |
article |
| author |
Maciej Łojkowski Adrian Chlanda Emilia Choińska Wojciech Swieszkowski |
| author_facet |
Maciej Łojkowski Adrian Chlanda Emilia Choińska Wojciech Swieszkowski |
| author_sort |
Maciej Łojkowski |
| title |
Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution |
| title_short |
Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution |
| title_full |
Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution |
| title_fullStr |
Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution |
| title_full_unstemmed |
Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution |
| title_sort |
water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/138fbba2a3884b5393de93761958bf81 |
| work_keys_str_mv |
AT maciejłojkowski watervaporinducedselfassemblyofislandshoneycombstructurebysecondaryphaseseparationinpolystyrenesolutionwithbimodalmolecularweightdistribution AT adrianchlanda watervaporinducedselfassemblyofislandshoneycombstructurebysecondaryphaseseparationinpolystyrenesolutionwithbimodalmolecularweightdistribution AT emiliachoinska watervaporinducedselfassemblyofislandshoneycombstructurebysecondaryphaseseparationinpolystyrenesolutionwithbimodalmolecularweightdistribution AT wojciechswieszkowski watervaporinducedselfassemblyofislandshoneycombstructurebysecondaryphaseseparationinpolystyrenesolutionwithbimodalmolecularweightdistribution |
| _version_ |
1718378792690384896 |