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Univ. Paris-Saclay
Surface modification of electrically conducting substrates by electropolymerization coupled to controlled polyaddition reactions
Pr Christine Jérôme
Centre d'Etude et de Recherche sur les Macromolécules, Institut de Chimie, Université de Liège
Vendredi 29/09/2006, 11:00
SPEC Bât 466 p.111 (1er ét.), CEA-Saclay
The electrografting technique was first described for the acrylonitrile monomer and consists in initiating its polymerisation at a well-defined cathodic potential which allows to create a stable polymer/metal interface. This electrochemical technique is thus of the utmost importance for significant progress in very demanding applications, such as protection against corrosion, food packaging, biomaterials and sizing of reinforcing agents in composites... A main goal for the improvement of this electrografting method was to develop different strategies suitable to modulate the thickness of the organic films and to tune its surface properties and reactivity. The coupling of electrografting and controlled/living polymerisation of various families of monomers was revealed as a powerful answer. For this purpose, an acrylate is synthesized which contains an R group able to initiate the controlled/living polymerization of non (meth)acrylate monomers. Under cathodic polarization, the parent polyacrylate is chemisorbed, R being chosen for its stability during the process. In the last step, a polymer is grown by polyaddition from the very thin and adhering polyacrylate film, which increases the thickness of the organic coating and changes its chemical properties with preserving adhesion. By this process, well-adhering polynorbornene films of controlled thickness have been prepared by ring-opening metathesis polymerisation of norbornene by using the Grubbs catalyst, from a pregrafted polyacrylate layer bearing norbornene moieties. Moreover, the combination of electrografting and atom transfer radical polymerisation (ATRP) and nitroxide mediated polymerization (NMP) allowed us to graft to metallic and carbon substrates various polymers such as styrene, n-butyl acrylate and methyl methacrylate brushes. Applications to the building-up of antibacterial coatings will be emphasized.

 

Séminaire SPCSI - Informations pratiques

Entrée sur le site du CEA de Saclay pour les séminaires SPCSI

Afin de pouvoir entrer sur le site du CEA de Saclay veuillez adresser les données personnelles suivantes par courriel à Christine Prigian et Catherine Julien (secrétariat) un avis d’entrée vous sera alors délivré:

 

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Prénom:

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Nationalité:

Nom de l'employeur:

 

Ces informations doivent être envoyées au mieux deux jours avant la date du séminaire.

Lors de votre venue vous devez vous présenter avec une carte d'identité ou un passeport en cours de validité. L'entrée sur le site se fait par l'entrée principale ou porte Nord (suivre le lien ci-dessous), un badge vous y sera remis. Demandez à l'accueil le Bât.466, ils vous renseigneront.
Les séminaires se déroulent au Bât. 466, pièce 111 (1er étage).
En cas de problème vous pouvez contacter le secrétariat au : 01 69 08 65 32 /  40 12.


Formalities for entering the CEA Saclay site for SPCSI seminars

 

 

To enter in CEA Saclay you need to send the following personal data to Christine  PRIGIAN and Catherine Julien (secretariat):

 

 

Informations utiles/Practical informations - Contact

Informations:  Access



 

Contact: Christine Prigian et Catherine Julien

 

Last Name :

First Name :

Place and date of birth :

Nationality :

Employer Name :

These informations must be preferably sent at least two days before the seminar date.

 

When you come you must have a valid ID card or passport with you.

The entrance in CEA Saclay is through the main entrance or north entrance (see link below), a pass will be delivered. Ask at the “accueil” the path for the building 466. SPCSI seminars take place in room 111 (first floor).

Any questions/troubles do not hesitate to contact our secretariat : 33 (0)1 69 08 65 32 /  40 12.

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