The present research activity has been focused on surface modifications of polymers in order to enhance their flame retardancy and gas barrier properties. The work has been split into two different topics: i) fabric flame retardancy and ii) gas barrier coatings for packaging applications. Within the first topic different strategies have been applied in order to enhance the flame retardancy of synthetic poly(ethyleneterephthalate) fibres and their blends with cotton. The first strategy deals with the single step nanoparticle adsorption in a finishing-like process. In order to enhance the surface interaction and favor nanoparticle adsorption, a cold plasma surface activation (etching) has been exploited. The aim of this first approach is to evaluate the effectiveness of nanoparticles simple adsorption on fabric combustion properties and the enhancements promoted by the plasma surface activation performed at different processing conditions. Subsequently, the layer by layer assembly technique has been investigated as an evolution of the nanoparticle adsorption. This technique, that consists in a multi-step adsorption process, allows the build-up of coatings made of different kind of nanoparticles and polymers each one bearing a specific functionality. As far as gas barrier coatings are concerned the layer by layer technique applied to a biobased polymer (i.e. polylactic acid) in order to increase its barrier properties towards oxygen and water vapour for food packaging applications. The effects on the final barrier properties of different coating compositions and architectures have been evaluated.

Layer by Layer assembly of nanostructured coatingsfor flame retardancy and barrier properties / Carosio, Federico. - (2012).

Layer by Layer assembly of nanostructured coatingsfor flame retardancy and barrier properties

CAROSIO, FEDERICO
2012

Abstract

The present research activity has been focused on surface modifications of polymers in order to enhance their flame retardancy and gas barrier properties. The work has been split into two different topics: i) fabric flame retardancy and ii) gas barrier coatings for packaging applications. Within the first topic different strategies have been applied in order to enhance the flame retardancy of synthetic poly(ethyleneterephthalate) fibres and their blends with cotton. The first strategy deals with the single step nanoparticle adsorption in a finishing-like process. In order to enhance the surface interaction and favor nanoparticle adsorption, a cold plasma surface activation (etching) has been exploited. The aim of this first approach is to evaluate the effectiveness of nanoparticles simple adsorption on fabric combustion properties and the enhancements promoted by the plasma surface activation performed at different processing conditions. Subsequently, the layer by layer assembly technique has been investigated as an evolution of the nanoparticle adsorption. This technique, that consists in a multi-step adsorption process, allows the build-up of coatings made of different kind of nanoparticles and polymers each one bearing a specific functionality. As far as gas barrier coatings are concerned the layer by layer technique applied to a biobased polymer (i.e. polylactic acid) in order to increase its barrier properties towards oxygen and water vapour for food packaging applications. The effects on the final barrier properties of different coating compositions and architectures have been evaluated.
2012
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2500112
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo