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

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

Colloid & Polymer Science, vol.268, no.4, pp.337-344, 1990 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 268 Issue: 4
  • Publication Date: 1990
  • Doi Number: 10.1007/bf01411677
  • Journal Name: Colloid & Polymer Science
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.337-344
  • Keywords: Polyvinylpyrrolidone solutions, salt effect, solvent effects, spectrophotometric behavior, UV-spectra
  • Ankara University Affiliated: No

Abstract

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.