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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c00041
|2 doi
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|a pubmed24n1134.xml
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|a (DE-627)NLM340357290
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|a (NLM)35507040
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|a DE-627
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|a eng
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|a Septani, Cindy Mutiara
|e verfasserin
|4 aut
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|a Structural Evolution of a Polystyrene-Block-Poly(Ethylene Oxide) Block Copolymer in Tetrahydrofuran/Water Cosolvents
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 19.05.2022
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|a Date Revised 20.07.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a This study aims to quantitatively investigate the effect of water content on the self-assembly behavior of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) in tetrahydrofuran/water cosolvents by small-angle X-ray scattering. PS-b-PEO chains preferentially form fractal aggregates at a dilute concentration in neat tetrahydrofuran (THF). By adding a small amount of water into THF, PS-b-PEO forms gelled networks. The gelled networks have correlated inhomogeneities, which were generated through mesophase separation. These gelled networks are not present when PS-b-PEO is dissolved in THF/methanol and THF/ethanol cosolvents. The substitution of water with 12 M HCl reduces the viscosity of the gelled networks. Those results indicate that the gelled networks of PS-b-PEO need hydrogen bonds formed from surrounding water molecules to be bridging agents, which connect different PEO block chains together. Upon increasing the water content in THF/water cosolvents, dispersed micelles with a core-shell conformation or aggregated micelles preferentially coexist with fractal aggregates
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Furans
|2 NLM
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|a Micelles
|2 NLM
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|a Polymers
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|a Polystyrenes
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Ethylene Oxide
|2 NLM
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|a JJH7GNN18P
|2 NLM
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|a Shih, Orion
|e verfasserin
|4 aut
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|a Yeh, Yi-Qi
|e verfasserin
|4 aut
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|a Sun, Ya-Sen
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 19 vom: 17. Mai, Seite 5987-5995
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:38
|g year:2022
|g number:19
|g day:17
|g month:05
|g pages:5987-5995
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|u http://dx.doi.org/10.1021/acs.langmuir.2c00041
|3 Volltext
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