Fabrication of hydrophilized polyethylene membrane via blending with poly (ethylene glycol)
Paper ID : 1300-MST2015-FULL
farhad mansourizadeh, Reza Yegani *, Ali Akbari
Sahand University of Technology
During the past few years, membrane technology have become more widely used and replaced some of the conventional concentration techniques because it does not require phase change and are energy-saving. The major drawback in the extensive use of membrane is membrane fouling which results in flux reduction during operation. In the case of fouling caused by the adsorption of foulants on the membrane, the hydrophobic interaction between membrane surfaces and foulants has been considered a dominating factor. One of the useful techniques for hydrophilic modification of polymeric membrane is blending of hydrophilic polymers such as PEG into hydrophobic polymers. In this study, composite membrane prepared via blending of HDPE/PEG with thermally induced phase separation (TIPS) method. PEG was used as a hydrophilic agent to hydrophilic modification of HDPE membrane. The chemical and morphological changes were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), pure water flux (PWF) and water contact angle measurements. FT-IR test confirmed presence of PEG in the modified membrane. Contact angle test showed that pure HDPE membrane had low contact angle about 127. However, contact angle decreased in the presence of polyethylene glycol about 96. As contact angle result show, PEG improved the HDPE membrane hydrophilicity. Also increasing of PEG content into HDPE during membrane fabrication cause to increase in PWF, significantly.
Polyethylene, Polyethylene Glycol, Hydrophilicity, Blending
Status : Paper Accepted (Poster Presentation)