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The uniaxial drawing of PA6/tie/PE multilayer blown films is investigated in relation to the behavior of the pure components. The tensile stress–strain behavior of the multilayers obeys a simple additive mixture law of the one of the components which is consistent with the parallel mechanical coupling of the layer structure of the films. No significant difference is observed in the crystallographic...
This work deals with the in situ and ex situ WAXS study of the strain-induced structural changes in relation to the mechanical behavior of a semi-crystalline polylactide containing 4% of d-stereomer units. The crystals isothermally generated at 120°C were in the α form. The draw temperature was in the range 65°C<T d <90°C, i.e. just above T g . In this T d range isothermal...
Blends of entirely biosourced polymers, namely polylactide (PLA) and polyamide11 (PA11), have been melt-compounded by twin-screw extrusion without the use of any compatibilizing agent. The crystallization and melting behavior, the morphology and mechanical properties of the melt-compounded binary blends have been investigated over the whole composition range. Albeit immiscibility prevails in all blends,...
This work deals with the structural evolution under biaxial drawing of PA6/tie/PE multilayer films as a function of composition. The occurrence of plastic instabilities in the PA6 layer in the multilayers is strongly reduced with respect to the PA6 monolayer film and the maximum biaxial drawability of PA6 is considerably improved with increasing PE layer thickness. Quantitative evaluation by trichroic...
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