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|Title:||Polyhedral oligomeric silsesquioxanes tethered with perfluoroalkylthioether corner groups: Facile synthesis and enhancement of hydrophobicity of their polymer blends|
|Source:||Xu, J., Li, X., Cho, C.M., Toh, C.L., Shen, L., Mya, K.Y., Lu, X., He, C. (2009). Polyhedral oligomeric silsesquioxanes tethered with perfluoroalkylthioether corner groups: Facile synthesis and enhancement of hydrophobicity of their polymer blends. Journal of Materials Chemistry 19 (27) : 4740-4745. ScholarBank@NUS Repository. https://doi.org/10.1039/b900299e|
|Abstract:||Octa(vinyl)-POSS or octa(vinyldimethylsilyloxy)-POSS reacts with perfluoroalkyl thiol in the presence of 2,2′-azobisisobutyronitrile to afford perfluoroalkylthioether substituted POSS compounds in high yields. 29Si NMR and MALDI-TOF mass spectroscopic analyses indicate that the eight perfluoroalkylthioether chains are attached to the POSS core structure. Studies on poly(methyl methacrylate) (PMMA) blends with 5 wt% fluorinated POSS (fluoroPOSS) reveal that the POSS molecules considerably enhance the hydrophobicity of polymer blend surfaces as evidenced by significant increases in water contact angles from 71° for pure PMMA to 114-124° for fluoroPOSS-blends, making this type of fluoroPOSS a promising new class of highly hydrophobic hybrid materials. © 2009 The Royal Society of Chemistry.|
|Source Title:||Journal of Materials Chemistry|
|Appears in Collections:||Staff Publications|
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