Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/15654
Title: Chemically grafted alumina surface and applications
Authors: LIU LINGYAN
Keywords: Alumina; hydrophobic; AFM; XPS
Issue Date: 31-Jan-2007
Source: LIU LINGYAN (2007-01-31). Chemically grafted alumina surface and applications. ScholarBank@NUS Repository.
Abstract: Both commercial and home-made glass supported alumina surface have been treated with three different fluorinated carboxylic acid. XPS, contact angle, and AFM force-distant plot have been used for characterization. Adsorption of Immunoglobulin (IgG) on these nano-porous alumina surfaces were studied by Atomic Force Microscopy and Quartz Crystal Microbalance. Different performance of Immunoglobulin adsorption on un-grafted anodic alumina membrane and fluorinated group grafted alumina surface has been discovered under tapping mode AFM, which has also been used to study the adsorption of chemically grafted alumina surface in different concentrated IgG solution. Different concentration effects on IgG adsorption behavior have also been studied on thermal alumina under Quartz Crystal Microbalance.It can be concluded from both experiments that nucleation formed when adsorbent concentration beyond monolayer requirement. Prospective works are suggested including study on IgG time-frame adsorption using AFM and dual polarization interferometer (DPI).
URI: http://scholarbank.nus.edu.sg/handle/10635/15654
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