Programme

Unfurtunately the monastery Irsee has been closed by the Bavarian government due to the corona virus.

Therefore we have decided to offer the conference as a web conference only.

In those unpredictable times, protecting our participants’ health has the highest priority for us!

The scientific exchange must not come to a complete standstill and we believe that with this web solution we have found a way to keep the scientific community going.

In order to participate in the livestream of the conference as easy as possible and to give your presentation, we recommend the use of the web browsers Google Chrome or Microsoft Edge.

Here you can find detailed instructions for using the livestream.

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Lecture

Mussel-inspired efficient wet adhesives

Wednesday (18.03.2020)
08:50 - 09:10

Strong adhesives underwater play an important role in diverse fields, including biological tissues and biomedical applications, but have proven to be challenging. Marine organisms affixing themselves to rock under seawater with the help of 3,4-dihydroxyphenylalanine (DOPA), evoke an intriguing inspiration on wet adhesives. However, current underwater adhesives are not easily applicable in large part due to either cohesive or adhesive failure. We report a strong adhesive, with enhanced cohesion by designed covalent bonding. Strong coacervate adhesives were formed underwater by simply injecting a mixture of two DOPA functionalized polyelectrolytes, DOPA grafted polyacrylic acid and DOPA grafted polyallylamine. Oxidative crosslinking was designed by inducing controlled amounts of sodium periodate. Adhesion occured within minutes with cohesion obtained through a combination of electrostatic interactions, hydrogen bonding and covalent bonding. The adhesive abilities of both wet and dry adhesives were tested on glass substrates by lap shear test. This strong adhesive can be easily appliedand may have potential applications in many areas, including tissue adhesives, wound dressing, etc.

Speaker:
Ph.D. Yaqing Chen
Aarhus University
Additional Authors:
  • Prof. Henrik Birkedal
    Aarhus University