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LAVIOSA CHIMICA MINERARIA SpA 1 Delivering polymer properties using speciality additives based on smectite minerals Cinzia Della Porta - Laviosa Chimica.

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Presentation on theme: "LAVIOSA CHIMICA MINERARIA SpA 1 Delivering polymer properties using speciality additives based on smectite minerals Cinzia Della Porta - Laviosa Chimica."— Presentation transcript:

1 LAVIOSA CHIMICA MINERARIA SpA 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 LAVIOSA CHIMICA MINERARIA SpA 2 From mine to plastic Natural montmorillonitenanoclay

3 LAVIOSA CHIMICA MINERARIA SpA 3 Origin variability of the mineralogical and chemical composition alteration of volcanic ash hydrothermal alteration of volcanic rocks

4 LAVIOSA CHIMICA MINERARIA SpA 4 structure The crystallographic basis of montmorillonite is 2:1 layered structure a single layer of aluminium octahedron between two sheets of SiO 4 tetrahedrons

5 LAVIOSA CHIMICA MINERARIA SpA 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 LAVIOSA CHIMICA MINERARIA SpA 6

7 7 From mine to nanoclay selection of montmorillonite purification reaction of modification drying process production of powder

8 LAVIOSA CHIMICA MINERARIA SpA 8 Selection of montmorillonite

9 LAVIOSA CHIMICA MINERARIA SpA 9 Selection of montmorillonite

10 LAVIOSA CHIMICA MINERARIA SpA 10 Selection of clay

11 LAVIOSA CHIMICA MINERARIA SpA 11 Variables in the Process selection of material for different viscosity level of purification reaction modifier

12 LAVIOSA CHIMICA MINERARIA SpA 12 Dellite HPS: High Purified Sodic Montmorillonite

13 LAVIOSA CHIMICA MINERARIA SpA 13 Dellite HPS: an example in a starch based nanocomposite

14 LAVIOSA CHIMICA MINERARIA SpA 14 Different montmorillonite EVA + 10% sample1 XRD 4,13 nm intercalated nanoclay

15 LAVIOSA CHIMICA MINERARIA SpA 15 Different montmorillonite EVA + sample2 XRD 3,97 nm some intercalated material

16 LAVIOSA CHIMICA MINERARIA SpA 16 Different montmorillonite EVA + Dellite 72T XRD no ads exfoliated nanocomposite

17 LAVIOSA CHIMICA MINERARIA SpA 17 Mechanism of activation

18 LAVIOSA CHIMICA MINERARIA SpA 18 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

19 LAVIOSA CHIMICA MINERARIA SpA 19 Products: Dellite HPS and Dellite GSA for high polar polymer Dellite 72T and Dellite 67G for polyolefin Dellite 43B for aromatic polymers

20 LAVIOSA CHIMICA MINERARIA SpA 20

21 LAVIOSA CHIMICA MINERARIA SpA 21


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