Nano-sized cyclodextrin-based molecularly imprinted polymer adsorbents for perfluorinated compounds

6^th International Conference and Exhibition on Materials Science and Engineering

September 12-14, 2016 Atlanta, USA

Abdalla H Karoyo

University of Saskatchewan, Canada

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Perfluorinated compounds (PFCs) such as perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) represent a class of persistent organic pollutants (POPs) that have been detected in drinking water, waste water effluents, soil and sediments, and other aquatic environments around the globe. Recent efforts have been directed towards the design of effective remediation technology for the removal of PFCs from the environment. While there is a general consensus on adsorption-based processes as the most suitable methodology for the removal of PFCs from aquatic environments, challenges exist regarding the optimal material design of sorbents for optimal uptake of PFCs. Cyclodextrin (CDs) have been shown to form well-defined host-guest complexes with PFCs in the solution phase and the solid state according to nuclear magnetic resonance (NMR), FT-Infrared, Raman, and differential scanning calorimetry (DSC), among other results. The materials design, sorbent characteristics, and uptake performance of CD-based molecularly imprinted polymers (CD-MIPs) are generally superior compared to conventional MIPs and non-imprinted polymers (NIPs). In general, MIPs offer the advantage of selectivity, chemical tunability, high stability and mechanical strength, ease of regeneration, and overall lower cost compared to NIPs. In particular, CD-MIPs offer the added advantage of possessing multiple binding sites with unique physicochemical properties such as tunable surface properties and morphologies that vary considerably. This report provides a rationale for the design of unique polymer adsorbent nanomaterials that employ an intrinsic porogen via incorporation of a macrocycle (e.g. CD) in the polymer framework to afford adsorbent materials with tunable physicochemical properties and improved sorption capacity.

Biography :

Email: abk726@mail.usask.ca