Wyniki wyszukiwania dla: DOUBLE-ARMED DIAZACROWN ETHER

• Dipodal Tetraamide Derivatives of 1,10-Diaza-18-Crown-6 and Alkylmalonic Acids—Synthesis and Use as Ionophores in Ion Selective Membrane Electrodes

  Publikacja

  • R. Pomećko
  • E. Luboch
  • M. Jeszke

  - SENSORS - Rok 2021

  Novel dipodal derivatives of an 18-membered diaza-crown ether with two diamide chains featuring methylmalonic or butylmalonic acid residues were obtained and tested as ionophores in ion-selective plasticized membrane electrodes. The objective of the study was to identify measurement conditions which ensure the most favorable performance for magnesium ion-selective electrodes. The relationship between the molar lipophilic anion...

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• The structure of novel polyurethanes containing synthetic poly[(R,S)-3-hydroxybutyrate]

  Publikacja

  • J. Brzeska
  • P. Dacko
  • K. Gębarowska
  • H. Janik
  • B. Kaczmarczyk
  • J. Kasperczyk
  • M. Kowalczuk
  • M. Rutkowska

  - JOURNAL OF APPLIED POLYMER SCIENCE - Rok 2012

  The aim of this study was to estimate the structure of new polyurethanes with the potential to be used in medicine. Atactic poly[(R,S)-3-hydroxybutyrate], obtained via a ring-opening polymerization, and polycaprolactonediol or polyoxytetramethylenediol were used to built the soft segments. 4,4'-methylene dicyclohexyl diisocyanate and 1,4-butanediol were the components to form hard segments. Polyurethanes with low-molecular weight...

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