Original Article |
2005, Vol.27, No.4, pp. 867-876
Effect of polyethylene glycol on characteristics of chitosan membranes
Warawut Puthai, Pikul Wanichapichart, and Amnuay Kaewpiboon
pp. 867 - 876
Abstract
This work reports the influence of polyethylene glycol (PEG) on characteristics of chitosan membranes. Parameters used for membrane characterization were hydraulic permeability (Lp), molecular weight cut off (MWCO), and membrane impedance (Z). The results obtained from LP and Z imply that larger a amount of PEG addition enhances membrane porosity and enlarges the pore size. The prepared membranes were ultrafiltration type, with MWCO slightly greater than 35 kDa. Membranes without PEG addition could be nanofiltration type with Lp value of 0.4x10-11 m3 N-1 s-1, 10-20 times smaller than the other.