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Surface free energy of polyurethane coatings with improved hydrophobicity
The polarity of polyurethane coats was studied on the basis of the goniometric method for determination of wetting angle values, on the basis of calculated surface free energy (SFE) values by the van Oss–Good and Owens–Wendt methods, and on the basis of polarity measurements with the use of the (1)H...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer-Verlag
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3371328/ https://www.ncbi.nlm.nih.gov/pubmed/22707844 http://dx.doi.org/10.1007/s00396-012-2598-x |
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author | Król, Piotr Król, Bożena |
author_facet | Król, Piotr Król, Bożena |
author_sort | Król, Piotr |
collection | PubMed |
description | The polarity of polyurethane coats was studied on the basis of the goniometric method for determination of wetting angle values, on the basis of calculated surface free energy (SFE) values by the van Oss–Good and Owens–Wendt methods, and on the basis of polarity measurements with the use of the (1)H NMR spectra. Test polyurethanes were synthesised in the reaction of methylene diphenyl 4,4′-diisocyanate (MDI) or 3-izocyanatomethyl –3,5,5- trimethylcyclohexyl isocyanate (IPDI) and polyoxyethylene glycols or polyesters poly(ε-caprolactone) diols and poly(ethyleneadipate) diol with different molecular weights, and some diols as chain extenders, in dioxane. The type of raw material was found to significantly affect the phase structure of the obtained polyurethane elastomers and to control physical interactions within those structures, thus influencing the SFE values. Fundamental reduction in the SFE value of a coating below 28 mJ/m(2) was achieved by the use of 2,2,3,3-tetrafluoro-1,4-butanediol as the urethane prepolymer chain extender. |
format | Online Article Text |
id | pubmed-3371328 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Springer-Verlag |
record_format | MEDLINE/PubMed |
spelling | pubmed-33713282012-06-15 Surface free energy of polyurethane coatings with improved hydrophobicity Król, Piotr Król, Bożena Colloid Polym Sci Original Contribution The polarity of polyurethane coats was studied on the basis of the goniometric method for determination of wetting angle values, on the basis of calculated surface free energy (SFE) values by the van Oss–Good and Owens–Wendt methods, and on the basis of polarity measurements with the use of the (1)H NMR spectra. Test polyurethanes were synthesised in the reaction of methylene diphenyl 4,4′-diisocyanate (MDI) or 3-izocyanatomethyl –3,5,5- trimethylcyclohexyl isocyanate (IPDI) and polyoxyethylene glycols or polyesters poly(ε-caprolactone) diols and poly(ethyleneadipate) diol with different molecular weights, and some diols as chain extenders, in dioxane. The type of raw material was found to significantly affect the phase structure of the obtained polyurethane elastomers and to control physical interactions within those structures, thus influencing the SFE values. Fundamental reduction in the SFE value of a coating below 28 mJ/m(2) was achieved by the use of 2,2,3,3-tetrafluoro-1,4-butanediol as the urethane prepolymer chain extender. Springer-Verlag 2012-02-14 2012 /pmc/articles/PMC3371328/ /pubmed/22707844 http://dx.doi.org/10.1007/s00396-012-2598-x Text en © The Author(s) 2012 https://creativecommons.org/licenses/by/4.0/ This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. |
spellingShingle | Original Contribution Król, Piotr Król, Bożena Surface free energy of polyurethane coatings with improved hydrophobicity |
title | Surface free energy of polyurethane coatings with improved hydrophobicity |
title_full | Surface free energy of polyurethane coatings with improved hydrophobicity |
title_fullStr | Surface free energy of polyurethane coatings with improved hydrophobicity |
title_full_unstemmed | Surface free energy of polyurethane coatings with improved hydrophobicity |
title_short | Surface free energy of polyurethane coatings with improved hydrophobicity |
title_sort | surface free energy of polyurethane coatings with improved hydrophobicity |
topic | Original Contribution |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3371328/ https://www.ncbi.nlm.nih.gov/pubmed/22707844 http://dx.doi.org/10.1007/s00396-012-2598-x |
work_keys_str_mv | AT krolpiotr surfacefreeenergyofpolyurethanecoatingswithimprovedhydrophobicity AT krolbozena surfacefreeenergyofpolyurethanecoatingswithimprovedhydrophobicity |