Surface free energy of polypropylene and polycarbonate solidifying at different solid surfaces

Chibowski, Emil; Terpiłowski, Konrad

doi:10.1016/j.apsusc.2009.09.024

Cited by 46 publications

(30 citation statements)

References 21 publications

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“…It had to be kept in mind that the SFE value below 30 mJ/m 2 for a coating makes a proof for clearly hydrophobic performance of that coating, which is typical, e.g., for polypropylene 14. Such SFE values were recorded for cationomers no.…”

Section: Resultsmentioning

confidence: 97%

“…So, contact angles θ were first measured for the surfaces of cationomer coatings with the use of two pairs of model liquids (water–diiodomethane and formamide–diiodomethane) with on margin known parameters of γ L , γ

_{italicd}^{L}

, and γ

_{italicp}^{L}

(Table II). 14 Then, eq. (22) was used to calculate the values of γ

_{italicd}^{italicS}

and γ

_{italicp}^{italicS}

for the studied cationomers.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Waterborne cationomer polyurethane coatings with improved hydrophobic properties

Król¹,

Król²,

Stagraczyński³

et al. 2012

J of Applied Polymer Sci

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The AFM method was used to investigate the phase structure of the coatings, which have been obtained after application of polyurethane cationomers, synthesized in the reaction of 4,4′‐methylenebis(phenyl isocyanate) or isophorone diisocyanate with polyoxyethylene glycol (M = 600) and N‐methyl or N‐butyldiethanolamine with 2,2,3,3‐tetrafluoro‐1,4‐butanediol. Changes were discussed in the surface‐free energy (SFE) and its components, as calculated independently according to the method suggested by van Owens–Wendt, in relation to chemical structures of cationomers, as well as morphology of coating surfaces obtained from those cationomers. Fluorine incorporated into cationomers (about 2–5%) contributed to lower SFE values, down to about 30 mJ/m2. An attempt was made to use 1H‐NMR spectroscopy to provide more extensive grounds for the effect of polyurethane chemical structures (by parameters κ) on the SFE of coatings obtained from such polyurethanes, with the values of SFE (γS, γ italicpitalics) and determined by the Owens–Wendt method. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Section: Resultsmentioning

confidence: 97%

_{italicd}^{L}

, and γ

_{italicp}^{L}

(Table II). 14 Then, eq. (22) was used to calculate the values of γ

_{italicd}^{italicS}

and γ

_{italicp}^{italicS}

for the studied cationomers.…”

Section: Methodsmentioning

confidence: 99%

Waterborne cationomer polyurethane coatings with improved hydrophobic properties

Król¹,

Król²,

Stagraczyński³

et al. 2012

J of Applied Polymer Sci

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“…The surface energy of glass is 83 mJ/m 2 compared to polycarbonate with 34 mJ/m 2 . 21,22 Thus, it is evident that the contamination wets glass more easily than polycarbonate. For the study herein, a cleaning implement is chosen which exhibits a surface energy amidst those of glass and polycarbonate.…”

Section: Resultsmentioning

confidence: 97%

Cleaning Dirty Surfaces: A Three-Body Problem

Stoehr

Hall

Evans

et al. 2016

ACS Appl. Mater. Interfaces

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Human interaction with touch screens requires physical touch and hence results in contamination of these surfaces, resulting in the necessity of cleaning. In this study we discuss the three bodies of this problem and how each component contributes and can be controlled. Utilizing a standard fingerprint machine and a standard cleanability test, this study examines the influence of parameters such as the wiping speed and pressure, the material and surface area of the cloths, and the surface energy of the contaminated surfaces. It was shown that fingerprint contamination undergoes shear banding and hence is not easily removed. The degree of material removal depends on the position of the shear plane, which is influenced by surface energies and shear rates.

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“…This pushes the PEG away from the matrix to the surface. Fabrication conditions also influence the surface characteristics of the polymers …”

Section: Resultsmentioning

confidence: 99%

Improving the antifouling properties of polypropylene surfaces by melt blending with polyethylene glycol diblock copolymers

Garle

White

Budhlall

2017

J of Applied Polymer Sci

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Protein-resistant polyethylene-block-poly(ethylene glycol) (PE-b-PEG) copolymers of different molecular weights at various concentrations were compounded by melt blending with polypropylene (PP) polymers in order to enhance their antifouling properties. Phase separation of the PE-b-PEG copolymer and its migration to the surface of the PP blend, was confirmed by attenuated total reflectance-Fourier transform infrared, X-ray photoelectron spectroscopy, and static water contact angle measurements. Enrichment of PEG chains at the surface of the blends increased with increasing PE-b-PEG copolymer concentration and molecular weight. The PP blends compounded with PE-b-PEG copolymer having the lowest molecular weight (875 g mol 21 ), at the lowest concentration (1 wt %), gave the lowest bovine serum protein adsorption (30% less) compared to that of neat PP. At higher concentrations (5 and 10 wt %), and higher molecular weights (920, 1400, and 2250 g mol 21 ), the PE-b-PEG copolymers leached-out resulting in protein adsorption comparable to that of neat PP.Polypropylene (PP) is a widely used material for biomedical applications due to its many desirable properties, including low cost, ease of processing, and sterilization. 13 It finds extensive use in the biomedical field 14 as filtration membranes, 15 textiles/fabrics, and medical implants such as surgical meshes 16,17 and vascular prostheses. 18 These applications necessitate extraordinary wettability and protein repellency. 19 Wettability results from hydrophilic functional groups binding or interacting via H-bonding to water (H 2 O) molecules, leading to the formation of a highly hydrated layer of H 2 O molecules surrounding the hydrophilic groups. This hydrated layer results in steric hindrance to any incoming protein molecules, preventing their adsorption. 20Additional Supporting Information may be found in the online version of this article.

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Surface free energy of polypropylene and polycarbonate solidifying at different solid surfaces

Cited by 46 publications

References 21 publications

Waterborne cationomer polyurethane coatings with improved hydrophobic properties

Waterborne cationomer polyurethane coatings with improved hydrophobic properties

Cleaning Dirty Surfaces: A Three-Body Problem

Improving the antifouling properties of polypropylene surfaces by melt blending with polyethylene glycol diblock copolymers

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