Studies of network organization and dynamics of e-beam crosslinked PVPs: From macro to nano

Risultato della ricerca: Article

22 Citazioni (Scopus)

Abstract

In this work the influence of poly(N-vinylpyrrolidone)(PVP)concentration in water on the organization and dynamics of the corresponding macro-/nanogel networks has been systematically investigated. Irradiation has been performed at the same irradiation dose(within the sterilization dose range)and dose rate. In the selected irradiation conditions, the transition between macroscopic gelation andmicro/nanogels formation is observed just below the critical overlap concentration(1 wt%),whereas the net prevalence of intramolecular over intermolecular crosslinking occurs at a lower polymerconcentration(below 0.25 wt%). Dynamic–mechanical spectroscopy has been applied as a classical methodology to estimate the network mesh size for macrogels in their swollen state, while 13C NMR spin–lattice relaxation spectroscopy has been applied on both the macrogel and nanogel freeze driedresidues to withdraw interesting information of the network spatial organization in the passage of scale from macrotonano.
Lingua originaleEnglish
pagine (da-a)1349-1353
Numero di pagine5
RivistaRadiation Physics and Chemistry
Volume81
Stato di pubblicazionePublished - 2012

All Science Journal Classification (ASJC) codes

  • Radiation

Fingerprint Entra nei temi di ricerca di 'Studies of network organization and dynamics of e-beam crosslinked PVPs: From macro to nano'. Insieme formano una fingerprint unica.

  • Cita questo