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Delivering polymer properties using speciality additives based on smectite minerals

Delivering polymer properties using speciality additives based on smectite minerals. Cinzia Della Porta - Laviosa Chimica Mineraria SpA Livorno Italy. Nanocomposites 2002 Amsterdam 28-29 January. From mine to plastic. Natural montmorillonite . nanoclay. Origin.

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Delivering polymer properties using speciality additives based on smectite minerals

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  1. Delivering polymer properties using speciality additives based on smectite minerals Cinzia Della Porta - Laviosa Chimica Mineraria SpA Livorno Italy Nanocomposites 2002 Amsterdam 28-29 January

  2. From mine to plastic Natural montmorillonite nanoclay

  3. Origin variability of the mineralogical and chemical composition • alteration of volcanic ash • hydrothermal alteration of volcanic rocks

  4. structure The crystallographic basis of montmorillonite is 2:1 layeredstructure a single layer of aluminium octahedron between two sheets of SiO4 tetrahedrons

  5. The elementary particle is a platelet: every single platelet is about 1 nm thin • the various platelets are held together in packets by electrostatic and • Van der Waals forces • they can be exfoliated and dispersed in submicronic particles

  6. From mine to nanoclay • selection of montmorillonite • purification • reaction of modification • drying process • production of powder

  7. Selection of montmorillonite

  8. Selection of montmorillonite

  9. Selection of clay

  10. Variables in the Process • selection of material for different viscosity • level of purification • reaction • modifier

  11. Dellite HPS: High Purified Sodic Montmorillonite

  12. Dellite HPS: an example in a starch based nanocomposite

  13. Different montmorillonite EVA + 10% sample1 XRD4,13 nm intercalated nanoclay

  14. Different montmorillonite EVA + sample2 XRD 3,97 nm some intercalated material

  15. Different montmorillonite EVA + Dellite 72T XRD no ads exfoliated nanocomposite

  16. Mechanism of activation

  17. Not only the modifier... • For a successful nanocomposite synthesis you have to choose the right modifier but also the right raw material • The right raw material is dependent on the kind of polymer you are processing

  18. Products: • Dellite HPS and Dellite GSA for high polar polymer • Dellite 72T and Dellite 67G for polyolefin • Dellite 43B for aromatic polymers

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