6533b7ddfe1ef96bd1273e8f

RESEARCH PRODUCT

Improvement of photo-stability of LLDPE-based nanocomposites

V. MalatestaN. Tzankova DintchevaF. P. La MantiaF. Pagani

subject

Yield (engineering)NanocompositeMaterials sciencePolymers and PlasticsMetal ions in aqueous solutionCondensed Matter PhysicsLinear low-density polyethyleneMetalMetal deactivatorMechanics of Materialsvisual_artUltimate tensile strengthMaterials Chemistryvisual_art.visual_art_mediumComposite materialPhotodegradation

description

LLDPE-based nanocomposites undergo faster photo-oxidation than the unfilled matrix and the extent of their physical properties deterioration, namely elongation at break and tensile strength, is dependent on the organo-nanoclay loading. The observed acceleration is not due to faster photo-oxidation but rather due to a reduction of the oxidation induction time. The presence in the organoclays of trace amounts of metal ions may be promoting catalytic photodegradation. While UV absorbers provide useful protection, use of a metal deactivator has been found to greatly enhance the photo-stability of the LLDPE-based nanocomposites. Combinations of a metal deactivator and UV absorber yield synergistic effects.

yearjournalcountryeditionlanguage
2006-12-01
10.1016/j.polymdegradstab.2006.07.014http://hdl.handle.net/10447/17133