New Thermotropic Copoly(keto esters) Based on 3,4'-Disubstituted Benzophenones (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• New Thermotropic Copoly(keto esters) Based on 3,4'-Disubstituted Benzophenones (Articolo in rivista) (literal)

Anno

• 1997-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1002/macp.1997.021980818 (literal)

Alternative label

• Stagnaro P.; Tavella F.; Costa G.; B. Valenti (1997)
  New Thermotropic Copoly(keto esters) Based on 3,4'-Disubstituted Benzophenones
  in Macromolecular chemistry and physics (Print); Wiley-VCH - Weinheim, Wheinheim (Germania)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Stagnaro P.; Tavella F.; Costa G.; B. Valenti (literal)

Pagina inizio

• 2599 (literal)

Pagina fine

• 2611 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://onlinelibrary.wiley.com/doi/10.1002/macp.1997.021980818/pdf (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 198 (literal)

Rivista

• Macromolecular chemistry and physics (Rivista)

Note

• ISI Web of Science (WOS) (literal)
• Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Stagnaro P. Università di Genova (attualmente CNR-ISMAC Genova) Tavella F.; B. Valenti Università di Genova Costa G. CNR-ISMAC Genova (literal)

Titolo

• New Thermotropic Copoly(keto esters) Based on 3,4'-Disubstituted Benzophenones (literal)

Abstract

• Two isomeric benzophenone derivatives, 3-hydroxy-4'-carboxy- and 4-hydroxy-3'-carboxybenzophenone, were synthesized and used to prepare new home-and copoly(keto esters) with some commercial comonomers. Polymerizations were performed both by solution and melt polycondensation methods which affect the inherent viscosity and solubility of the resultant products. Yields were always almost quantitative independently of the synthetic method employed. All the samples exhibited very high thermal stability. Phase behaviour and morphology of the polyesters have been investigated by differential scanning calorimetry (DSC) analysis and optical microscopy. A liquid-crystalline (LC) phase was observed in most of the specimens containing commercial hydroxy acids in percentages higher than 30 mol-%, while both homopolymers melt to an isotropic liquid. Preliminary gravimetric sorption experiments, using acetone as a penetrant, were carried out on films prepared from some of the copolymers able to give both isotropic non-crystalline and nematic LC morphologies. The penetrant sorption was strongly reduced by the presence of the frozen nematic LC phase that behaves similarly to the conventional crystalline ordered state. (literal)

Editore

• Wiley-VCH - Weinheim (Editore)

Prodotto di

• Progettazione e sviluppo di materiali polimerici multifasici micro e nanostrutturati (PM.P02.005.004) (Modulo)
• Istituto per lo studio delle macromolecole (ISMAC) (Istituto)

Autore CNR

• GIOVANNA COSTA (Unità di personale interno)
• PAOLA STAGNARO (Persona)

Incoming links:

Prodotto

• Istituto per lo studio delle macromolecole (ISMAC) (Istituto)
• Progettazione e sviluppo di materiali polimerici multifasici micro e nanostrutturati (PM.P02.005.004) (Modulo)

Autore CNR di

• PAOLA STAGNARO (Persona)
• GIOVANNA COSTA (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Macromolecular chemistry and physics (Rivista)

Editore di

• Wiley-VCH - Weinheim (Editore)