Polymeric films (low-d. polyethylene and oriented polypropylene) for packaging applications coated with org.-inorg. nanocomposite hybrids have been prepd. by sol-gel process. Tetraethoxysilane and two different org. phases, polyvinyl alc. and a diblock copolymer polyethylene-polyethylene glycol were used as precursors. Information about the hydrolysis and polycondensation degrees was obtained by investigating the vibrational features of the coatings by means of attenuated total reflectance-Fourier transform IR and Raman spectroscopies. Through a new polariscopic imaging technique, the bi-dimensional maps of the optical anisotropy of the samples, both as-prepd. and under mech. strain, were obtained. The maps showed inhomogeneous retardation and nearly flat azimuth distributions. The anisotropy properties of the samples depended mainly on the substrates and were not influenced by the coatings, while the optical transmission was slightly better for the tetraethoxysilane-polyvinyl alc. sample.

Polariscopic imaging and vibrational characterization of hybrid films for packaging / MARINO I., G; LOTTICI P., P; Rizzetti, C; Montenero, A; Rocchetti, M; Toselli, M; Marini, M; Pilati, Francesco. - In: PACKAGING TECHNOLOGY AND SCIENCE. - ISSN 0894-3214. - STAMPA. - 21:6(2008), pp. 329-338. [10.1002/pts.814]

Polariscopic imaging and vibrational characterization of hybrid films for packaging

PILATI, Francesco
2008

Abstract

Polymeric films (low-d. polyethylene and oriented polypropylene) for packaging applications coated with org.-inorg. nanocomposite hybrids have been prepd. by sol-gel process. Tetraethoxysilane and two different org. phases, polyvinyl alc. and a diblock copolymer polyethylene-polyethylene glycol were used as precursors. Information about the hydrolysis and polycondensation degrees was obtained by investigating the vibrational features of the coatings by means of attenuated total reflectance-Fourier transform IR and Raman spectroscopies. Through a new polariscopic imaging technique, the bi-dimensional maps of the optical anisotropy of the samples, both as-prepd. and under mech. strain, were obtained. The maps showed inhomogeneous retardation and nearly flat azimuth distributions. The anisotropy properties of the samples depended mainly on the substrates and were not influenced by the coatings, while the optical transmission was slightly better for the tetraethoxysilane-polyvinyl alc. sample.
2008
21
6
329
338
Polariscopic imaging and vibrational characterization of hybrid films for packaging / MARINO I., G; LOTTICI P., P; Rizzetti, C; Montenero, A; Rocchetti, M; Toselli, M; Marini, M; Pilati, Francesco. - In: PACKAGING TECHNOLOGY AND SCIENCE. - ISSN 0894-3214. - STAMPA. - 21:6(2008), pp. 329-338. [10.1002/pts.814]
MARINO I., G; LOTTICI P., P; Rizzetti, C; Montenero, A; Rocchetti, M; Toselli, M; Marini, M; Pilati, Francesco
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/610438
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 1
social impact