This work is the second part of a study aimed at understanding in more depth structure, dynamics, interactions and correlations between morphology and barrier properties against oxygen diffusion of complex PE-PEG/PHS/SiO2 hybrids prepared through a sol-gel process. Using a combined DSC and solid-state NMR approach, including 13C and 29Si experiments and 1H ultra-fast MAS spectra, the structural, phase and interaction properties of three PE-PEG/PHS/SiO2 samples with different compositions, exhibiting different barrier performances, have been investigated, also taking into account the results obtained for the simpler one- and two-component systems (Part I). While the structure of the silica domains has been found to be not affected by composition, many differences have been observed concerning the phase and dynamic properties of the organic components (PE and PEG crystallinity and mobility of their amorphous domains) and the inter-component interactions (strength of the hydrogen bonds between PHS and both silica and PEG and PHS/PEG miscibility). In particular peculiar phase and interaction properties of the sample exhibiting the best barrier properties have been identified and characterized.

Structure, dynamics and interactions of complex sol-gel ybrid materials through SSNMR and DSC: part II, Ternary systems based on PE-PEG block copolymer, PHS and Silica / S., Borsacchi; F., Martini; M., Geppi; Pilati, Francesco; M., Toselli. - In: POLYMER. - ISSN 0032-3861. - STAMPA. - 52:20(2011), pp. 4545-4552. [10.1016/j.polymer.2011.07.055]

Structure, dynamics and interactions of complex sol-gel ybrid materials through SSNMR and DSC: part II, Ternary systems based on PE-PEG block copolymer, PHS and Silica

PILATI, Francesco;
2011

Abstract

This work is the second part of a study aimed at understanding in more depth structure, dynamics, interactions and correlations between morphology and barrier properties against oxygen diffusion of complex PE-PEG/PHS/SiO2 hybrids prepared through a sol-gel process. Using a combined DSC and solid-state NMR approach, including 13C and 29Si experiments and 1H ultra-fast MAS spectra, the structural, phase and interaction properties of three PE-PEG/PHS/SiO2 samples with different compositions, exhibiting different barrier performances, have been investigated, also taking into account the results obtained for the simpler one- and two-component systems (Part I). While the structure of the silica domains has been found to be not affected by composition, many differences have been observed concerning the phase and dynamic properties of the organic components (PE and PEG crystallinity and mobility of their amorphous domains) and the inter-component interactions (strength of the hydrogen bonds between PHS and both silica and PEG and PHS/PEG miscibility). In particular peculiar phase and interaction properties of the sample exhibiting the best barrier properties have been identified and characterized.
2011
52
20
4545
4552
Structure, dynamics and interactions of complex sol-gel ybrid materials through SSNMR and DSC: part II, Ternary systems based on PE-PEG block copolymer, PHS and Silica / S., Borsacchi; F., Martini; M., Geppi; Pilati, Francesco; M., Toselli. - In: POLYMER. - ISSN 0032-3861. - STAMPA. - 52:20(2011), pp. 4545-4552. [10.1016/j.polymer.2011.07.055]
S., Borsacchi; F., Martini; M., Geppi; Pilati, Francesco; M., Toselli
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/11380/706737
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 5
social impact