K. (Kenneth) Bijkerk

MSc student

University of Twente

Science and Technology

Meander, ME 316

P.O. Box 217

7500 AE Enschede

The Netherlands

Email: k.bijkerk@student.utwente.nl

 

Research description

The fabrication of thin films in micro-channels and the modeling of its transport performance

The project Microfluidic Solvent Exchanger (MSX) is aiming to develop a microfluidic handing device for continuous solvent exchange. By integration with membrane technology, the device is designed to replace one solvent by another one. The principle of this device relies on well-defined flow conditions. Laminar flow is desired for the solvent exchange to predict the concentration profiles and avoid convective mixing. The performance of membranes plays a crucial role in the device. The ideal membrane is independent on the solvent properties and with high permeability to the organic solvents.

The assignment will focus on the membrane fabrication and operation aspect. This thesis encompasses the following work:

1.

The in-situ fabrication of thin films in silicon microchips by Liquid-Liquid /Liquid-Gas interfacial polymerization. Three different chemicals will be adopted for the reaction, Piperazine, POSS and Jeffamin. The relevant measurements for the film properties are involved, for instance as the CO2 acidification.

2.

The modeling of transport performance of the thin films. This is important for the evaluation of required rejection and transport properties of the thin film.