24 research outputs found
2-DIMENSIONAL SMALL-ANGLE X-RAY-SCATTERING STUDIES ON ORIENTED POLY(ETHYLENE-TEREPHTHALATE) FILMS
Thermally stimulated structural changes in highly oriented glassy poly(ethylene terephthalate)
Surface Film Formation by Chemical Vapor Deposition of Di-p-xylylene: Ellipsometrical, Atomic Force Micrsocopy, and X-Ray Studies
SUPERMOLECULAR STRUCTURE OF ORIENTED AND SEMICRYSTALLINE POLY(ETHYLENE-TEREPHTHALATE) AS REVEALED BY THE ELECTRON-DENSITY CORRELATION-FUNCTION FROM SMALL-ANGLE X-RAY-SCATTERING STUDIES
Wide-angle X-ray scattering studies using an area detector: Crystallite orientation in semicrystalline PET structures
The influence of a polymeric nucleating additive on the crystallisation in glass fibre reinforced polyamide 6 composites
Simulation of the stretch blow moulding process: from the modelling of the microstructure evolution to the end-use elastic properties of polyethylene terephthalate bottles
The original publication is available at www.springerlink.comThe whole stretch blow-moulding process of PET bottles is simulated at the usual process temperature in order to predict the elastic end-use properties of the bottles. An anisotropic viscoplastic constitutive law, coupled with microscopic variables, is dentified from uniaxial tensile tests performed at different strain rates and temperatures. The microstructure evolution is characterised by crystallinity measurements from interrupted tests and frozen samples. For each specimen tested, the Young modulus is measured at room temperature. Numerical simulations of the blow moulding process are run using the C-NEM method. A micromechanical modelling is post-processed after the simulation to predict the elastic properties. Predictions of Young modulus distributions in bottles are in agreement with the ones measured on blow-moulded bottles