Monosized nonporous resin particles were prepared in aqueous medium by polymerisation of urea with formaldehyde in the presence of soluble Fe(III) hydrolysis polymers. Measurements of the geometrical parameters showed that the material particle size distribution was in the range 2.5–3.5 μm (average particle diameter 2.99 μm with standard deviation 0.49), and had a sphericity index of 0.851. Particle pore-size was determined by gel permeation chromatography. The microspheres exhibited exceptional mechanical strength, chemical stability in the pH range between 1–13, and low tendency toward swelling in the solvents commonly used in liquid chromatography. The synthesis of a chiral urea-formaldehyde based resin for the enantiomer separation of underivatized phenylalanine by ligand exchange chromatography is reported.

"New organic monosized microspheres for use in enantiomer separations by high-performance liquid chromatography" / Sinibaldi, M.; Castellani, L.; Federici, F.; Messina, Antonella; Girelli, Anna Maria; Lentini, A.; Tesarova, E.. - In: JOURNAL OF LIQUID CHROMATOGRAPHY. - ISSN 0148-3919. - STAMPA. - 163:(1995), pp. 3187-3203. [10.1080/10826079508010444]

"New organic monosized microspheres for use in enantiomer separations by high-performance liquid chromatography"

MESSINA, Antonella;GIRELLI, Anna Maria;
1995

Abstract

Monosized nonporous resin particles were prepared in aqueous medium by polymerisation of urea with formaldehyde in the presence of soluble Fe(III) hydrolysis polymers. Measurements of the geometrical parameters showed that the material particle size distribution was in the range 2.5–3.5 μm (average particle diameter 2.99 μm with standard deviation 0.49), and had a sphericity index of 0.851. Particle pore-size was determined by gel permeation chromatography. The microspheres exhibited exceptional mechanical strength, chemical stability in the pH range between 1–13, and low tendency toward swelling in the solvents commonly used in liquid chromatography. The synthesis of a chiral urea-formaldehyde based resin for the enantiomer separation of underivatized phenylalanine by ligand exchange chromatography is reported.
1995
01 Pubblicazione su rivista::01a Articolo in rivista
"New organic monosized microspheres for use in enantiomer separations by high-performance liquid chromatography" / Sinibaldi, M.; Castellani, L.; Federici, F.; Messina, Antonella; Girelli, Anna Maria; Lentini, A.; Tesarova, E.. - In: JOURNAL OF LIQUID CHROMATOGRAPHY. - ISSN 0148-3919. - STAMPA. - 163:(1995), pp. 3187-3203. [10.1080/10826079508010444]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/34717
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 7
social impact