Interrupting marine fouling with active buffered coatings

Area of Science:

• Marine science
• Materials science
• Surface chemistry

Background:

• Biofouling on marine surfaces causes significant material and financial losses.
• Poly(dimethylsiloxane) (PDMS)-based amphiphilic coatings show effectiveness against marine foulers.
• Acidic microenvironments within biofilms enhance adhesion under low-pH conditions.

Purpose of the Study:

• To design and utilize amphiphilic polymer coatings with buffer functionalities.
• To investigate neutral and zwitterionic buffer systems for marine coatings.
• To actively disrupt the adhesion of four different marine foulers.

Main Methods:

• Development of amphiphilic polymer coatings incorporating buffer functionalities.
• Testing the efficacy of neutral and zwitterionic buffer systems against marine foulers.
• Analysis of foulant removal and adhesion under varying pH conditions.

Main Results:

• Amphiphilic polymer coatings with buffer functionalities were successfully designed and utilized.
• The buffer systems improved foulant removal across tested marine foulers.
• The buffer systems demonstrated unexpected high effectiveness against the diatom Navicula incerta.

Conclusions:

• Amphiphilic polymer coatings with buffer functionalities offer a promising strategy for active biofouling disruption.
• The incorporation of buffer systems enhances the performance of marine coatings.
• Further research into zwitterionic buffer systems may yield superior anti-fouling solutions, especially for diatom control.