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Degradation of polymer blends: Part V-Compatibility and photo-oxidation of LDPE-LLDPE blends in natural weathering conditions: A differential scanning calorimetry study

par Trojan, Michèle ;Daro, Arlette ;David, Christiane ;Jacobs, Robert
Référence Polymer degradation and stability, 28, 3, page (275-287)
Publication Publié, 1990

Article révisé par les pairs

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Résumé :

Thin films of extruded-blown LDPE-LLDPE blends have been photo-oxidized in natural weathering conditions in the absence and in the presence of a photo-initiator. DSC has been used to study the compatibility of the components of the blend and the changes of morphology induced by the degradation processes. Changes in the shape of the curves, increase in the heat of fusion and shift of Tmax have been observed and attributed to a reorganization of the oriented amorphous-crystalline structure due to physical ageing and to the decrease of molecular weight and branching. © 1990.