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RISS 인기검색어
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- 저자 : Zalicki, Piotr J. (검색결과 1 건)
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Marine Bioinspired Underwater Contact Adhesion
Clancy, Sean K.,Sodano, Antonio,Cunningham, Dylan J.,Huang, Sharon S.,Zalicki, Piotr J.,Shin, Seunghan,Ahn, B. Kollbe American Chemical Society 2016 Biomacromolecules Vol.17 No.5
<P>Marine mussels and barnacles are sessile biofouling organisms that adhere to a number of surfaces in wet environments and maintain remarkably strong bonds. Previous synthetic approaches to mimic biological wet adhesive properties have focused mainly on the catechol moiety, present in mussel foot proteins (mfps), and especially rich in the interfacial mfps, for example, mfp-3 and -5, found at the interface between the mussel plaque and substrate. Barnacles, however, do not use Dopa for their wet adhesion, but are instead rich in noncatecholic aromatic residues. Due to this anomaly, we were intrigued to study the initial contact adhesion properties of copolymerized acrylate films containing the key functionalities of barnacle cement proteins and interfacial mfps, for example, aromatic (catecholic or noncatecholic), cationic, anionic, and nonpolar residues. The initial wet contact adhesion of the copolymers was measured using a probe tack testing apparatus with a flat-punch contact geometry. The wet contact adhesion of an optimized, bioinspired copolymer film was similar to 15.0 N/cm(2) in deionized water and similar to 9.0 N/cm(2) in artificial seawater, up to 150 times greater than commercial pressure-sensitive adhesive (PSA) tapes (similar to 0.1 N/cm(2)). Furthermore, maximum wet contact adhesion was obtained at similar to pH 7, suggesting viability for biomedical applications.</P>
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