Spectrophotometric behavior of polyvinylpyrrolidone in aqueous and nonaqueous media (I)

Türker L., GÜNER A., Yigit F., Güven O.

Colloid & Polymer Science, cilt.268, sa.4, ss.337-344, 1990 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 268 Sayı: 4
  • Basım Tarihi: 1990
  • Doi Numarası: 10.1007/bf01411677
  • Dergi Adı: Colloid & Polymer Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.337-344
  • Anahtar Kelimeler: Polyvinylpyrrolidone solutions, salt effect, solvent effects, spectrophotometric behavior, UV-spectra
  • Ankara Üniversitesi Adresli: Hayır

Özet

Electronic spectral behavior of polyvinylpyrrolidone solutions in various media has been determined by UV-VIS spectrophotometry. A theoretical approach has been developed to explain the experimentally observed concentration dependent spectral behavior of polyvinyl pyrrolidone in aqueous and nonaqueous solvents. Increase in the concentration of the polymer or the addition of guanidine salts caused bathochromic shift. A similar concentration effect has been observed in nonaqueous media in the absence of guanidine salts. © 1990 Steinkopff.