Weathering Effects on the Microstructure Morphology of Low Density Polyethylene

Blown extruded films of low-density polyethylene (LDPE) have been subjected to climatic ageing in a sub-Saharan facility at Laghouat (Algeria) with direct exposure to sun. Samples were characterized by X-ray diffraction (XRD) and differential scanning calorimetry (DSC) techniques after prescribed am...

Full description

Saved in:
Bibliographic Details
Published inProcedia, social and behavioral sciences Vol. 195; pp. 2228 - 2235
Main Authors Imane, Babaghayou Meriam, Asma, Abdelhafidi, Fouad, Chabira Salem, Mohamed, Sebaa
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 03.07.2015
Subjects
ageing
crystallinity
DSC
long period
Low Density poly(Ethylene)
XRD
ageing
crystallinity
long period
XRD
DSC
Low Density poly(Ethylene)
Online AccessGet full text

Cover

More Information
Summary:Blown extruded films of low-density polyethylene (LDPE) have been subjected to climatic ageing in a sub-Saharan facility at Laghouat (Algeria) with direct exposure to sun. Samples were characterized by X-ray diffraction (XRD) and differential scanning calorimetry (DSC) techniques after prescribed amounts of time up to 8 months. It has been shown via these two techniques that crystallinity increases with exposure time. The reason of these morphological changes is relevant to photooxidative reactions leading to crosslinking in the beginning and to chain scissions for an advanced stage of ageing. The short chain segments resulting from scission reactions increase the crystallinity of the film via a chemocristallisation process.
ISSN:1877-0428
1877-0428
DOI:10.1016/j.sbspro.2015.06.306