Structure of e-beam sculptured poly(N-vinylpyrrolidone) networks across different length-scales, from macro to nano

Maria Antonietta Sabatino, Donatella Bulone, M. Veres, Alberto Spinella, Giuseppe Spadaro, Clelia Dispenza

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Study of macromolecular structure and dynamics of networks formed by pulsed electron-beam irradiation of poly(N-vinyl pyrrolidone) (PVP) aqueous solutions, at relatively low energy per pulse and across different concentration regimes, provides the basis for the understanding of a new generation of functional nanostructures. Networks are the result of the follow-up reactions initiated by a continuous series of electron pulse-generated hydroxyl radicals, which may have a different fate at the variance of polymer concentration. Different spectroscopic techniques, FT-IR, 13C {1H} CP-MAS NMR and Raman, applied to characterize the formed networks, describe a profound modification of the chemical structure when network size is approaching the nanoscale. Static light scattering measurements provide further information on the average weight molecular weight modification of PVP when forming nanogel particles. From the simultaneous control of network size and modification of chemical functionality stems also an intrinsic fluorescence of these nanogels never observed before. Altogether the obtained radiation-sculptured nanogels exhibit interesting multifunctionality that, coupled with the already proven biocompatibility, can be exploited in the biomedical field.

Original languageEnglish
Pages (from-to)54-64
Number of pages11
JournalPolymer (United Kingdom)
Volume54
Issue number1
DOIs
Publication statusPublished - Jan 8 2013

Fingerprint

Biocompatibility
Light scattering
Macros
Electron beams
Nanostructures
Fluorescence
Molecular weight
Nuclear magnetic resonance
Irradiation
Radiation
Electrons
Polymers
Hydroxyl Radical
N-vinyl-2-pyrrolidinone
NanoGel

Keywords

  • Irradiation
  • Nanogels
  • Poly(N-vinylpyrrolidone)

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Structure of e-beam sculptured poly(N-vinylpyrrolidone) networks across different length-scales, from macro to nano. / Sabatino, Maria Antonietta; Bulone, Donatella; Veres, M.; Spinella, Alberto; Spadaro, Giuseppe; Dispenza, Clelia.

In: Polymer (United Kingdom), Vol. 54, No. 1, 08.01.2013, p. 54-64.

Research output: Contribution to journalArticle

Sabatino, Maria Antonietta ; Bulone, Donatella ; Veres, M. ; Spinella, Alberto ; Spadaro, Giuseppe ; Dispenza, Clelia. / Structure of e-beam sculptured poly(N-vinylpyrrolidone) networks across different length-scales, from macro to nano. In: Polymer (United Kingdom). 2013 ; Vol. 54, No. 1. pp. 54-64.
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