INORGANIC NANOPARTICULES AND NANOSTRUCTURED MATERIALS AT RHODIA

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• INORGANIC NANOPARTICULES AND NANOSTRUCTURED
  MATERIALS AT RHODIA
• Patrick Maestro
• Scientific Director
• Rhodia RecherchesTechnologies

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RHODIA une présence mondiale
Chiffres clés 2004(IFRS)
Europe 47 du CA 12 441 collaborateurs
5 010 M de CA 483 M dEBITDA récurrent 20
577 collaborateurs 87 sites industrielsdans le
monde
Amérique du Nord 22 du CA 1 857 collaborateurs
Asie-Pacifique 18 du CA 3 190 collaborateurs
Amérique latine 13 du CA 3 089 collaborateurs
Comprenant lUnion européenne, les autres pays
européens et la CEI Résultat opérationnel
avant dotation nette aux amortissements et
dépréciations avant charges de restructuration
et autres charges et produits opérationnels.
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Des activités au service de la vie quotidienne
Filtres à cigarettes
ACETOW
NOVECARE
Détergence, soin de la personne,pétrole,
traitement des métaux
POLYAMIDE
Automobile,électricité,loisirs, biens
deconsommationcourants
SILCEA
COATIS
Pneumatiques,dépollution automobile,électroniqu
e,chaussures de sport
Peintures et revêtements industriels
ECOSERVICES
ORGANICS
Régénérationde l'acide sulfurique
Arômes,parfums,agrochimie
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NANOPARTICULES AT RHODIA SOME APPLICATIONS
Nanoparticles are industrial products at Rhodia
since the early 80s

• Commercial products
• Automobile Market
• Tire highly dispersible SiO2 ZEOSIL (HDS)
• Depollution gasoil CeO2 - EOLYS
• Coatings
• Protective UV varnishes for wood CeO2 -
  RHODIGARD

• Under development
• Reinforcement and barrier effects lamellar
  nano Zirconium Phosphate

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Highly dispersible Silica to reinforce tires
ZEOSIL (HDS)

• Highly dispersible Silica (HDS) for rubber
  reinforcement

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Highly dispersible Silica to reinforce tires
ZEOSIL (HDS)

• Rhodias HDS Silica improves performances in
  terms of
• Rolling resistance
• Adhesion on ice and snow, on wet roads, ...

• the higher the index ..
• the better the performance !

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CeO2 based catalyst soluble in diesel fuel
EOLYS
On board dosing of Eolys in the fuel

• performances
• soot elimination gt 99,9
• Autonomy gt 180 000 km

Particulate filter
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CeO2 based catalyst soluble in diesel fuel
EOLYS

• CeO2 nanoparticles in organic medium (vector
  diesel)
• Intimate and homogeneous dispersion of CeO2
• Complete regeneration of the filter

Cerium based catalyst and soot aggregate
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CeO2 based catalyst soluble in diesel fuel
EOLYS
Emission of particles after 80,000km -
less than 100g by Peugeot 607 HDI - more than
3kg by a modern diesel vehicle without
particulate filter
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Nano CeO2 for UV protection of wood
RHODIGARD
Transparent Nano CeO2
CeO2 absorbs UV without photoactivity
Concentration dans leau 1 g.l-1
50 nm
Stabilized in water (basic pH) for water based
paints Stabilized in solvent medium for organic
based paints
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Nano CeO2 for UV protection of wood
RHODIGARD
Increases lifetime of the coating No effect on
transparency No migration nor decompositon of
nano CeO2 with time Increases abrasion and
scratch resistance Improves hydrophobicity of
the coating
Exposed wood plates (Sun, water, heat, time
Coating with UV absorbing nanoCeO2
Coating alone
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Lamellar Nanofillers for nanocomposites with gas
barrier effect
Under development
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Lamellar Nanofillers for nanocomposites with gas
barrier effect
Under development
Aggrandissement
25 nm
100 nm
Reinforce, Lightening, Protect, Lifetime
increase, Anti-scratch, Gaz barrier effect,
Conductivity,
Lamellar nanoparticles, Width 1 nm, length 200
nm, dispersed in Polyamide. Synthetic
controlled variation of properties (e. g. color)
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Dreaming with a hidden functionality
Transparent nanophosphors
Nanometric suspension of LaPO4 Eu
50 nm
Potential applications Cosmetics and textiles
(special effects), flexible screens, lighting,
marking, . Advantage stability of the mineral
particle compounds
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Access to Nanomaterials Rhodias offer

• Mastering the synthesis, at the industrial level
  (from kg to thousands of tons)
• Control particles shape and scale 5 - 25 - 50 -
  100 nm ...
• Formulation water or organic-based suspensions,
  concentrations up to
• 400 g.l-1 in CeO2 i. e., agglomerated powders (lt
  100 nm)
• Fonctionnalization and surface chemistry (ex.
  hydrophilicity/hydrophobicity)
• mineral encapsulation, grafting/adsorption of
  organic molecules
• Structuration of nanoparticles (mesoporous or
  anisotropic)
• Modelisation of optical effects (transparency,
  opacity, brigthness, color)

Knowledge of nanoparticles behavior in the
application medium and capacity to provide ready
to use systems by adjusting surface chemistry
(affinity to the substrate, dispersibility,
agglomeration control, )