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Abstract

The surface of polyester grafted with acrylic acid has been characterized using contact angle measurements of a two-liquid phase system and FT-IR and ESCA spectroscopy as a function of the concentration of acrylic acid on grafting. The COOH groups on the polymer surface influence only the polar component γ_s ^p of surface energy and not the dispersive one γ_s ^d. Both the FT-IR and ESCA characterizations, showing the transformation of COOH to COONa by alkaline treatment, provide information with a high degree of surface sensitivity, comparable to that of contact angle measurements. The relative area ratios of the COONa peak to the COOR peak by FT-IR ( A _surface) and of the Na₁ _s peak to the C₁ _s peak by ESCA are linearly correlated to γ_s ^p.

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References

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Acrylic Acid Grafted Polyester Surface: Surface Free Energies,FT-IR(ATR),and ESCA Characterization

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