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Department of Chemistry
Hornluftdosierung an einer Spritzpistole im Praktikum Lackapplikation Show image information
Kolorierte Rasterelektronenmikroskopaufnahme eines Effektpigmentes Show image information
Mittels des PeakForce QNM-Messmodus lassen sich nanomechanische Eigenschaften am Rasterkraftmikroskop ermitteln. Show image information
Kolorierte Rasterelektronenmikroskopaufnahme einer mmonodispersen Polymerdispersion Show image information
Probenwechsel unter dem Infrarotstrahler Show image information
Ermittlung der Kornfeinheit mittels Grindometer im Praktikum Show image information

Hornluftdosierung an einer Spritzpistole im Praktikum Lackapplikation

Photo: Irina Regehr, CMP, Universität Paderborn

Kolorierte Rasterelektronenmikroskopaufnahme eines Effektpigmentes

Photo: Nadine Buitkamp, CMP, Universität Paderborn

Mittels des PeakForce QNM-Messmodus lassen sich nanomechanische Eigenschaften am Rasterkraftmikroskop ermitteln.

Photo: Irina Regehr, CMP, Universität Paderborn

Kolorierte Rasterelektronenmikroskopaufnahme einer mmonodispersen Polymerdispersion

Photo: Nadine Buitkamp, CMP, Universität Paderborn

Probenwechsel unter dem Infrarotstrahler

Photo: Irina Regehr, CMP, Universität Paderborn

Ermittlung der Kornfeinheit mittels Grindometer im Praktikum

Photo: Irina Regehr, CMP, Universität Paderborn

Coating Materials & Polymers
Prof. Dr. Wolfgang Bremser

Inorganic-Organic hybrid materials

Formation behaviour of domains in hybrid polymers

Hybrid polymers, also called nano composites, are described as macromolecular substances build from organic and inorganic domains, which are in the ideal case chemically bonded.

Schematic structure of a hybrid polymer based on polyanions

Polymers consisting of an inorganic backbone with organic or organometallic side chains are called inorganic organic hybrid polymers (IOP), while polymers consisting of an organic backbone with inorganic side chains or groups are called organic inorganic hybrid polymers (OIP).

The inorganic domains will affect abilities like thermal resistance, fire resistance, resistance to radiation, biological stability and electrical conductivity. The organic domains will affect solubility, flexibility, hydrophobicity and other surface related abilities.

One of the most common methods for the synthesis of hybrid polymers is the sol-gel process. An inorganic network is built by controlled hydrolysis and condensation of organically modified metal oxides, in this case silicon. This inorganic network can be further modified.

First step: Hydrolysis

Second step: Condensation

One of the assets of sol-gel coating materials when compared with other inorganic coatings is their ability to be applied wet like common coating materials. The coating will switch from liquid sol state to sol-gel state.

Sol-gel coatings are already used for

  • Anti-reflective coatings for glasses
  • Scratch resistant coatings for polycarbonate and windscreens
  • Corrosion protection of metal substrates
  • Easy to clean and anti-fingerprint coatings
  • High temperature stable coatings for metal substrates
  • Antimicrobial coatings

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