- Tuesday, September 22, 2009
- Synthesis of Swellable Tris (2-aminoethyl) amine Functionalized Polymer Microspheres and Study of their Optical Sensing Properties
Ibrahim Abu-Shqair, Ziad Shakhsher, and Hanin Qasem
An optical chemical sensor based on polymer swelling and shrinking will be studied by way of optical transmission. Tris (2-aminoethyl) amine-polymer will be synthesized. The sensing Polymer will be formed from poly (vinylbenzylchloride), Tris (2-aminoethyl) amine by a nucleophilic substitution reaction followed by base hydrolysis. This polymer is expected to show interesting response to pH changes as well as selectivity for different heavy metal cations. The sensing element will be produced by dispersing the Tris (2-aminoethyl) amine-polymer beads and entrapping them as microspheres in a hydrogel membrane formed by cross linking poly (vinylalcohol) with gluteraldehyde. The entrapping of the microspheres in the hydrogel aims to generate a sensing element that will be attached to the end of fiber optics, to form a fiber optic sensor that will be used in real-life sample analysis.