Prof. Jiahui Shao
Project Description and Objectives
Nanofiltration (NF) membrane has a molecular weight cut-off (MWCO) ranging from 200 to 1000 Da, which offers several advantages such as better ion selectivity than ultrafiltration (UF), lower operation pressure than reverse osmosis (RO) membrane. Therefore, it has been extensively studied and applied to many research fields such as removal of heavy metals, water softening and seawater desalination. Currently, the most commonly used NF membrane is thin-film composite poly(piperazine amide) (PA), which is prepared by interfacial polymerization (IP). Such a membrane exhibits certain advantages, such as high bivalent-ion rejections and easy fabrication. However, some problems need to be addressed, such as low water flux and membrane fouling. Incorporation of nanomaterial components into the polyamide matrix can solve the potential problems.
In this study, we plan to synthesize a kind of sulfonated hyperbranched polymers. The thin-film composite membranes will be then prepared by incorporation of sulfonated hyperbranched polymers into the polyamide matrix. The separation properties and anti-fouling abilities of nanofiltration membranes will be also investigated and studied.
Basic knowledge of chemistry/physics.
Motivation to work.
Majors in environmental engineering, chemical engineering or materials science are preferred.
Synthesis of sulfonated hyperbranched polymers.
Fabrication of nanofiltration membrane using IP technique.
Characterization and evaluation of membrane performance.