6533b86ffe1ef96bd12cdc7e
RESEARCH PRODUCT
Rheological Response of Polyethylene/Clay Nanocomposites to Annealing Treatment
Francesco Paolo La MantiaNadka Tzankova DintchevaScaffaro RobertoLuigi Bottasubject
Materials sciencePolymers and PlasticsAnnealing (metallurgy)chemistry.chemical_elementMineralogyengineering.materialViscoelasticityAnnealingchemistry.chemical_compoundCoatingRheologyPolymer chemistryMaterials ChemistryPhysical and Theoretical ChemistryComposite materialNanocompositeNanocompositeOrganic ChemistryPolyethyleneCondensed Matter PhysicsNitrogenSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiMontmorillonitechemistryPolyethyleneengineeringRheologydescription
The rheological response of a polyethylene/clay nanocomposite to annealing treatment under air and nitrogen atmospheres was studied. The treatment influences the rheology of the nanocomposite significantly. In particular, the viscosity and the non-Newtonian behavior dramatically increase with annealing time, and a liquid-like/solid-like transition is observed. The annealed samples were characterized by ATR-FT-IR spectrometry and it was shown that a silicate-rich layer is formed on the surface of the nanocomposite. This result was confirmed by TEM images of bulk and surface of annealed samples. It was demonstrated that the formation of this coating is the main cause of the change of rheological behavior.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-12-04 | Macromolecular Chemistry and Physics |