Fouling-release coatings prepared from α,ω-dihydroxypoly(dimethylsiloxane) cross-linked with (heptadecafluoro-1,1,2,2-tetrahydrodecyl)triethoxysilane
Fouling-release coatings prepared from α,ω-dihydroxypoly(dimethylsiloxane) cross-linked with (heptadecafluoro-1,1,2,2-tetrahydrodecyl)triethoxysilane
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DOI：
10.1016/s0021-9797(02)00037-1
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发表时间：
2003-01-15
影响因子：
9.9
通讯作者：
Gatenholm, P
中科院分区：
文献类型：
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作者：
Berglin, M;Wynne, KJ;Gatenholm, P
研究了α，omega-二羟基聚二甲基硅氧烷((heptadecafluoro-1，1，2，2-tetrahydrodecyl)triethoxysilane)和正硅酸乙酯(TEOS)分别与聚硅氧烷(FTEOS)和正硅酸乙酯(TEOS)交联制得的聚二甲基硅氧烷(PDMS)的表面性能。FTEOS17固化涂层在3个月的水暴露期间显示出稳定的前进和后退接触角，而TEOS固化涂层的后退接触角下降了70度。用衰减全反射红外光谱(ATR-Fr/IR)检测了TEOS固化涂层在水中浸泡后表面的羟基。轻拍模式原子力显微镜(TM-AFM)在原始FTEOS 17固化涂层上显示出从光滑和无特征到拓扑复杂的表面拓扑，具体取决于FTEOS 17的浓度。氟化涂层在浸水后表面形态稳定，我们认为这是由于氟化硅相的形成，阻止了表面重建、水渗透和水解。光滑的TEOS固化涂层在浸水后表面粗糙度增加，表面出现裂纹和冲蚀坑。(C)2003年埃尔塞维尔科学公司(美国)。版权所有。
Surface properties of pristine and water-aged polymeric films made of alpha, omega-dihydroxypoly(dimethylsiloxane) (PDMS) cross-linked with (heptadecafluoro-1,1,2,2-tetrahydrodecyl)triethoxysilane (FTEOS17) or tetraethoxysilane (TEOS) were investigated. The FTEOS17-cured coatings showed stable advancing and receding contact angles over a period of 3 months of water exposure, compared to a 70degrees decrease in receding contact angle for the TEOS-cured coatings. After immersion in water, hydroxyl groups were detected on the TEOS-cured coatings with attenuated total reflection infrared spectroscopy (ATR-Fr/IR). Tapping-mode atomic force microscopy (TM-AFM) on pristine FTEOS 17-cured coatings showed surfaces topologies ranging from smooth and featureless to topologically complex, depending on FTEOS 17 concentration. The fluorinated coatings showed a stable surface morphology after water immersion, which we believe is due to the formation of a fluorinated siliceous phase that prevented the surface reconstruction, water penetration, and hydrolysis. The smooth pristine TEOS-cured coatings showed an increased roughness with cracks and erosion pits present on the surface after water immersion. (C) 2003 Elsevier Science (USA). All rights reserved.