Transcript UCSB MRSEC 1121053 IRG-1-Waite-Mussel inspired adhesion.ppt

IRG-1
NSF-DMR11-21053
Mussel Inspired Adhesive Surfaces
50 μm
Silica beads
adhere to specific
polymer surfaces
10 μm
15%
20%
The presence of catechol moieties in wet bioadhesives is crucial for function.
echol (%)
Unfortunately, the catechol unit is difficult to introduce into synthetic systems due to
oxidation
and to overcome
this challenge,
the )Hawker,
Kramer and Waite groups
ostructures
with
Inorganic materials
(silica beads
are well attached
developed new
chemistry
allows polysiloxane
surfaces and objects to be fabricated
onalizedhave
polysiloxane
on the
catecholwhich
functionalized
with catechol functionalized surfaces. Significantly, adhesion strength was
proportional to the concentration of catechol with the fabricated microstructures
showing dramatic wet adhesive properties on oxide surfaces (Figure).