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RESEARCH PRODUCT
Thermo-Mechanical Degradation of LDPE-Based Nanocomposites
Nadka Tzankova DintchevaFrancesco Paolo La Mantiasubject
chemistry.chemical_classificationNanocompositeMaterials sciencePolymers and PlasticsGeneral Chemical EngineeringOrganic ChemistryPolymerchemistry.chemical_compoundLow-density polyethyleneViscosityMontmorillonitechemistryRheologyMaterials ChemistryShear stressOrganoclayComposite materialdescription
Thermo-mechanical degradation of LDPE-based nanocomposites was studied by mainly investigating the rheological properties. For all of the investigated processing conditions, the viscosity of the nanocomposites was higher than that of the pure-LDPE matrix, but on increasing the severity of the mixing conditions, the difference between the viscosity of the nano-filled polymer and that of the pure LDPE decreased. The X-ray traces of the nanocomposites suggest that intercalation has been achieved during the melt, when less-severe processing conditions were used. At severe processing conditions (longer mixing time, high temperature and shear stress) the thermo-mechanical degradation was accelerated, possibly due to the loss of mass from the organoclay galleries. The variations of the viscosity in the presence of two organo-modified montmorillonite (MMt) clays were compared to the ones observed with a MMt clay at different processing conditions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-07-12 | Macromolecular Materials and Engineering |