The Effect of Step Isothermal Crystallization on the Polymer Crystalline Morphology: The Case of Isotactic Polystyrene
AUTOR(ES)
D'Alkaine, Carlos V., Otaguro, Harumi
FONTE
Polímeros
DATA DE PUBLICAÇÃO
2001
RESUMO
Simulations have shown that temperature changes during the growth of lamelae/ribbons of a polymer crystal induce alterations in the thickness of the lamelar crystal. Therefore, the lamelae/ribbons would melt at different temperatures. This is demonstrated experimentally here for spherulites of Isotactic Polystyrene (iPS). The results were obtained following the melting process of selected spherulite structures through temperature scanning. The samples, in which chosen spherulites were observed, were crystallized from the melting state at successive crystallization temperatures. Observations of these spherulite melting processes were made with an optical polarized microscope, using a hot stage to apply the temperature scan.
Documentos Relacionados
- Effect of polystyrene on poly(ethylene terephthalate) crystallization
- The Effect of Polystyrene on the Crystallization of Poly(3-hydroxybutyrate)
- Effect of compatibilization and reprocessing on the isothermal crystallization kinetics of polypropylene/wood flour composites
- EFFECT OF POLY (N- VINYPYRROLIDONE) ON THE NON-ISOTHERMAL CRYSTALLIZATION KINETICS AND VISCOELASTIC PROPERTIES OF PVDF FILMS
- Effect of particle morphology on the mechanical and thermo-mechanical behavior of polymer composites
