Enhancement of the hydrophobicity of recycled polystyrene films using a spin coating unit

ABSTRACT This article describes a technique for recycling polystyrene cups (PSr) mixed with poly(butyl methacrylate) (PBMA) to produce PSr/PBMA films and subsequently PSr films by removing PBMA with a selective solvent (acetic acid), with the benefit of a reduction in environmental pollution generat...

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Veröffentlicht in:Journal of applied polymer science 2017-10, Vol.134 (40), p.n/a
Hauptverfasser: Patiño‐Herrera, Rosalba, Catarino‐Centeno, R., González‐Alatorre, Guillermo, Gama Goicochea, Armando, Pérez, Elías
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Sprache:eng
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Zusammenfassung:ABSTRACT This article describes a technique for recycling polystyrene cups (PSr) mixed with poly(butyl methacrylate) (PBMA) to produce PSr/PBMA films and subsequently PSr films by removing PBMA with a selective solvent (acetic acid), with the benefit of a reduction in environmental pollution generated by polystyrene waste. Removal of PBMA increases roughness, which generates a significant increase ( ∼34°) in the water contact angle, reaching its highest value at 128°. By increasing the hydrophobicity of surfaces, properties with important technical applications are acquired such as those used in antifouling paints, stain‐resistant surfaces, and surfaces that avoid the formation and accretion of ice on microelectronic devices. Roughness of PSr/PBMA films is significantly affected by the concentration of both polymers and by the spin rate, reaching its highest value at 2% PSr and 3% PBMA at 2000 rpm. For optimal film deposition, a cheap spin coating unit was designed and built, with a price less than 4% of that of a commercially available spin coating unit. Lastly, it was found that the data obtained with our spin coating unit is described by the Meyerhofer model with accuracy of 88% ± 3%. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45365.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.45365