The influence of surface energy on the wetting behaviour of the spore adhesive of the marine alga Ulva linza (synonym Enteromorpha linza)

被引:82
作者
Callow, JA [1 ]
Callow, ME
Ista, LK
Lopez, G
Chaudhury, MK
机构
[1] Univ Birmingham, Sch Biosci, Birmingham B15 2TT, W Midlands, England
[2] Univ New Mexico, Dept Chem & Nucl Engn, Albuquerque, NM 87131 USA
[3] Lehigh Univ, Dept Chem Engn, Bethlehem, PA 18017 USA
关键词
adhesion; wetting theory; biofouling; Ulva; environmental scanning electron microscopy; self-assembled monolayers;
D O I
10.1098/rsif.2005.0041
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The environmental scanning electron microscope has been used to image the adhesive pads secreted by zoospores of the marine alga Ulva linza as they settle on a rang of self-assembled and grafted monolayers of different wettability, under natural. hydrated conditions. Results reveal that the diameter of the adhesive pad is strongly influenced by surface wettability, the adhesive spreading more (i.e. wetting the surface better) on the more hydrophilic surfaces. This is in direct contrast to previous observations on the spreading of marine bioadbesives and is in apparent contradiction to the predictions of the Young-Dupre equation for three-phase systems. In this paper, we attempt an explanation based upon thermodynamic analysis of the wetting properties of hydrophilic proteins.
引用
收藏
页码:319 / 325
页数:7
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