Positively Charged Adhesives
Positively charged catechol adhesives achieve strong underwater bonding and potential antimicrobial coatings.
Researchers at Purdue University developed biomimetic, positively charged adhesive polymers with excellent binding properties in both wet and dry environments. These adhesives contain catechol groups and varying amounts of either positively charged groups or groups that cross-link when placed in water. The researchers carried out structure-function studies and arrived at an optimum polymer charge content that provided maximum bulk adhesion and surface bonding in both dry and underwater conditions. These adhesives may also be suitable for making surface binding coatings with antibacterial properties.
Advantages
- Effective under both wet and dry conditions
- High performance in extreme conditions
- Reproducible synthesis
Applications
- Adhesives
-Antimicrobial coatings
Related Publications: Positive Charge Influences on the Surface Interactions and Cohesive
Bonding of a Catechol-Containing Polymer. ACS Appl. Mater. Interfaces. DOI: 10.1021/acsami.3c16889
TRL: 3
Intellectual Property:
Provisional-Gov. Funding, 2022-04-22, United States
PCT-Gov. Funding, 2023-04-20, WO
NATL-Patent, 2024-10-10, United States
Keywords: Adhesion, Adhesives, Antibacterial, Biomimetic, Cations, Chemistry and Chemical Analysis, Coatings, Materials and Manufacturing, Polymers