Influence of processing on the ethylene-vinyl alcohol (EVOH) properties: Application of the successive self-nucleation and annealing (SSA) technique
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Altres documents de l'autoria: Franco Urquiza, Edgar A.; Santana Pérez, Orlando Onofre; Gamez-Perez, Jose; Martínez, A. B.; Maspoch, Maria Lluïsa
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7034
comunitat-uji-handle3:10234/8619
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Influence of processing on the ethylene-vinyl alcohol (EVOH) properties: Application of the successive self-nucleation and annealing (SSA) techniqueAutoria
Data de publicació
2010Editor
Budapest University of TechnologyISSN
1788-618XCita bibliogràfica
eXPRESS Polymer Letters (2010) vol. 4, no. 3, p. 153–160Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.expresspolymlett.com/Paraules clau / Matèries
Resum
Films of EVOH copolymers, processed three times by twin-screw extrusion were prepared using a cast-film line. The variation on the melt flow rate (MFR) and rheological behaviour of the films were determined, as well ... [+]
Films of EVOH copolymers, processed three times by twin-screw extrusion were prepared using a cast-film line. The variation on the melt flow rate (MFR) and rheological behaviour of the films were determined, as well as the thermal properties assessed by differential scanning calorimetry (DSC) and dynamic-mechanical thermal analysis (DMTA). As the results showed that the reprocessing induced an increase in the viscosity and orientation of the films, it was suggested that structural modifications from chain-extension or cross-linking reactions promoted by hydroxyl and residual acetoxyl groups, could be occurring. The successive self-nucleation and annealing (SSA) technique was applied, evidencing the structural modifications on the EVOH copolymer. [-]
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© Budapest University of Technology
info:eu-repo/semantics/openAccess
© Budapest University of Technology
info:eu-repo/semantics/openAccess
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