Studies on fouling by the freshwater mussel limnoperna fortunei and the antifouling effects of low energy surfaces |
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| Authors: | Kousaku Ohkawa Ayako Nishida Reiko Honma Yoshihiko Matsui Keiji Nagaya Akira Yuasa |
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| Institution: | 1. Institute of High Polymer Research, Faculty of Textile Science and Technology , Shinshu University , Veda, 386, Japan;2. Department of Civil Engineering , Gifu University , Gifu, 501, Japan;3. Center for River Basin Environmental Research , Gifu University , Gifu, 501, Japan |
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| Abstract: | Attachment of the freshwater mussel, Limnoperna fortunei, was tested using non‐treated surfaces, viz. glass, nylon, rubber, silicone and Teflon, together with glass surfaces modified with nine kinds of silane coupling agents. Among the surfaces tested, the mussel avoided attaching to Teflon, silicone, and glass modified with 3‐bromopropyltrimethoxysilane or 3,3,3‐(trifluo‐ropropyl)‐trimethoxysilane. With respect to the relationship between the percentage attachment and the surface free energy (sfe) of the substrates, it was found that attachment was considerably reduced on the substrates which exhibited relatively low sfe, as above. The mean number of secreted byssuses per attaching mussel also decreased with decreasing substrate sfe. Furthermore, when the sfe was divided into the dispersion and polar components, the percentage mussel attachment was related to the polar component. These results suggest that effective antifouling towards L. fortunei is achieved on substrates with a low sfe polar component. |
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| Keywords: | freshwater mussel Limnoperna fortunei attachment behavior surface free energy silane coupling agent antifouling |
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