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Home  > Raw materials & technologies  > Science today - coatings tomorrow  > Antifouling coating with a self-peeling an...

Wednesday, 01 April 2020
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Raw materials & technologies, Science today - coatings tomorrow

Antifouling coating with a self-peeling and self-generated surface developed

Tuesday, 2 April 2013

An optimal composition of microgel and TIPSM contents features very good antifouling properties of the coatings in the field tests in a real marine environment.

New hybrid antifouling coatings with a self-generated topographical microgel surface has been developed / Source: Fotolia

New hybrid antifouling coatings with a self-generated topographical microgel surface has been developed / Source: Fotolia

Chinese researchers prepared new hybrid antifouling coatings with a self-generated topographical microgel surface by mixing small surface-functionalised microgels with a self-peeling resin and a poly-functional cross-linking agent (axiridine).

During the coating process, the microgels and terpolymer chains were cross-linked together to form a hard thin film. After it was immersed into sea water, the microgels dispersed and embedded on the film surface are swollen, generating small and soft bumps, and at the same time, the hydrolysis of TIPSM makes the surface layer hydrophilic, forming a thin layer of soft hydrogel.

A combination of these two effects featured in a soft and dynamic topographical surface layer with many well-structured microgel bumps. Both the self-peeling and topographically structured surface by small microgel bumps lead to antifouling properties.

To test this novel idea, scientists prepared a set of coatings with different microgel and TIPSM contents and evaluated their antifouling properties in a real marine environment. They found some optimal composition at which the coatings showed excellent antifouling properties in the field tests. Adding the microgels reduced the amount of expensive TIPSM required so that the coatings become more cost-effective, which is important for industrial applications.

Read the complete study "Novel hybrid anti-biofouling coatings with a self-peeling and self-generated micro-structured soft and dynamic surface”, Journal of Materials Chemiatry, 2013, issue 15, pp. 2048-2055.

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