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Home  >  Journal list  >  Polymer Journal  >  Vol.47  No.12 (2015)  >  pp.811-818

Polymer Journal
<<Previous article Vol.47  No.12 (2015)   pp.811 - 818 Next article>>

Versatile inhibition of marine organism settlement by zwitterionic polymer brushes

Yuji Higaki1,2,3, Jin Nishida1, Ai Takenaka1, Rika Yoshimatsu1, Motoyasu Kobayashi1 and Atsushi Takahara1,2,3
1Japan Science and Technology Agency (JST), ERATO Takahara Soft Interfaces Project, Fukuoka, Japan
2Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka, Japan
3International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka, Japan

The anti-fouling character of polymer brushes against marine organisms was investigated by performing settlement tests with barnacle cypris larvae and mussel larvae in their adhesion period, as well as a marine bacteria colonization test. The settlement behavior of the marine organisms was carefully observed during the assays to obtain insight into the anti-fouling character. Zwitterionic poly(phosphobetaine) brushes and poly(sulfobetaine) brushes exhibited excellent anti-fouling characteristics for both macro- and micro-organisms, whereas poly(quaternary ammonium cation) brushes allowed mussel larvae settlement and bacteria adhesion. Regardless of the surface free energy and chain mobility, all of the hydrophobic polymer brushes showed poor anti-fouling character for the marine organisms tested. The surface charge and hydration state in saline seawater appear to be important factors in the versatile anti-fouling performance of zwitterionic polyelectrolyte brushes.


Received: July 06, 2015
Accepted: July 27, 2015 , Published online: September 16, 2015
© 2015 The Society of Polymer Science, Japan

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