Impact of the various buffer solutions on the temperature-responsive properties of POEGMA-grafted brush coatings

The effect of temperature and buffer solutions with different pH (often used in biomedical applications) on the behavior of POEGMA brush coatings, synthesized without incorporated functional groups, was for the first time studied in details using water contact angle (CA) measurements and atomic forc...

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Bibliographic Details
Published in:Colloid and polymer science 2022-05, Vol.300 (5), p.487-495
Main Authors: Shymborska, Yana, Stetsyshyn, Yurij, Raczkowska, Joanna, Awsiuk, Kamil, Ohar, Halyna, Budkowski, Andrzej
Format: Article
Language:English
Subjects:
Atomic force microscopy
Biomedical materials
Brushes
Buffer solutions
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Coating effects
Complex Fluids and Microfluidics
Contact angle
Ellipsometry
Ethylene glycol
Food Science
Functional groups
Macromolecules
Nanotechnology and Microengineering
Original Contribution
Physical Chemistry
Polymer Sciences
Soft and Granular Matter
Temperature effects
Thermal response
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Summary:The effect of temperature and buffer solutions with different pH (often used in biomedical applications) on the behavior of POEGMA brush coatings, synthesized without incorporated functional groups, was for the first time studied in details using water contact angle (CA) measurements and atomic force microscopy (AFM). Thermal response of grafted brush-coatings based on poly(oligo(ethylene glycol) methacrylate)s (POEGMA)s is driven by lower critical solution temperature (LCST) phenomenon. Obtained CA and AFM results suggest strong impact of the buffer solutions on the values of LCST transition and contact angle ranges, as well as on coatings morphology. In turn, ellipsometry data reflect penetration of salt ions from buffer solutions into brush-coatings. In contrast to “typical” behavior of POEGMA coatings in water, different mechanisms available below LCST in the buffer solutions destroy hydrated layers surrounding POEGMA macromolecules leading to their collapse. Graphical abstract
ISSN:0303-402X
1435-1536
DOI:10.1007/s00396-022-04959-1