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Surface free energy analysis of poly N vinyl 2 pyrrolidone crotonic acid copolymers prepared by Gamma ray induced polymerization technique      
Yazarlar
Tuncer Çaykara
Gazi Üniversitesi, Türkiye
Prof. Dr. Zekeriya YERLİKAYA Prof. Dr. Zekeriya YERLİKAYA
Gazi Üniversitesi, Türkiye
Kantoğlu Ömer
Özet
Pure poly(N-vinyl-2-pyrrolidone) (PVP) and P(VP-crotonic acid) [P(VP/CrA)] copolymers with different CrA contents were prepared by the γ-ray-induced polymerization technique. The change in the surface free energy of the copolymers was investigated using the Van Oss-Good contact angle evaluation methodology in order to estimate their wettability properties. The apolar Lifshitz-van der Waals component (γSLW) and the electron donor component (γs-) of the PVP network were calculated as 27.6 and 56.5 mN m-1, respectively. In this case, the surface of the PVP network had a basic character (electron donor). By contrast, the γSLW component of P(VP/CrA) copolymers increased and then remained almost constant with increasing CrA content. In addition, the surface of these copolymers changed from a basic character (γS- = 56.5 mN m-1) to an acidic character (γS+ = 0.07 mN m-1) with increasing CrA contents in the copolymer.
Anahtar Kelimeler
Networks | Poly(N-vinyl-2-pyrrolidone-crotonic acid) | Radiation | Surfaces
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF APPLIED POLYMER SCIENCE
Dergi ISSN 0021-8995
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce
Basım Tarihi 02-2004
Cilt No 91
Sayı 3
Sayfalar 1893 / 1897
Doi Numarası 10.1002/app.13245
Makale Linki http://doi.wiley.com/10.1002/app.13245