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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.1c03204
|2 doi
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|a pubmed24n1141.xml
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Witzmann, Thomas
|e verfasserin
|4 aut
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| 245 |
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|a Repulsive Interactions of Eco-corona-Covered Microplastic Particles Quantitatively Follow Modeling of Polymer Brushes
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 27.07.2022
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|a Date Revised 29.08.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The environmental fate and toxicity of microplastic particles are dominated by their surface properties. In the environment, an adsorbed layer of biomolecules and natural organic matter forms the so-called eco-corona. A quantitative description of how this eco-corona changes the particles' colloidal interactions is still missing. Here, we demonstrate with colloidal probe-atomic force microscopy that eco-corona formation on microplastic particles introduces a compressible film on the surface, which changes the mechanical behavior. We measure single particle-particle interactions and find a pronounced increase of long-range repulsive interactions upon eco-corona formation. These force-separation characteristics follow the Alexander-de Gennes (AdG) polymer brush model under certain conditions. We further compare the obtained fitting parameters to known systems like polyelectrolyte multilayers and propose these as model systems for the eco-corona. Our results show that concepts of fundamental polymer physics, like the AdG model, also help in understanding more complex systems like biomolecules adsorbed to surfaces, i.e., the eco-corona
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 650 |
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|a Microplastics
|2 NLM
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| 650 |
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7 |
|a Plastics
|2 NLM
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| 650 |
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|a Polymers
|2 NLM
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| 700 |
1 |
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|a Ramsperger, Anja F R M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wieland, Simon
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Laforsch, Christian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kress, Holger
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fery, Andreas
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Auernhammer, Günter K
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 29 vom: 26. Juli, Seite 8748-8756
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:38
|g year:2022
|g number:29
|g day:26
|g month:07
|g pages:8748-8756
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|u http://dx.doi.org/10.1021/acs.langmuir.1c03204
|3 Volltext
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