Author/Authors :
Zhang، نويسنده , , Runnan and Su، نويسنده , , Yanlei and Peng، نويسنده , , Jinming and Fan، نويسنده , , Xiaochen and Jiang، نويسنده , , Zhongyi and Zhao، نويسنده , , Xueting and Liu، نويسنده , , Jiazhen and Li، نويسنده , , Yafei and Zhao، نويسنده , , Jiaojiao، نويسنده ,
Abstract :
In the present study, an in situ approach to pH and temperature responsive membranes is developed. The membrane matrix is formed through bulk polymerization and crosslinking of liquid monomer 2-hydroxyethyl methacrylate (HEMA) while the membrane pores are formed by the templating of inorganic particles. The functional monomers methacrylic acid (MAA) and N-isopropylacrylamide (NIPAAm) are incorporated into membrane casting solution in order to confer membranes with pH and temperature responsive properties. The poly(HEMA/MAA) membranes exhibit a reversible pH-dependent water flux, while the poly(HEMA/NIPAAm) membranes exhibit a reversible temperature-dependent water flux. The flux of the poly(HEMA/MAA) membrane increased by 70% when pH was decreased from 10.0 to 2.0, while the flux poly(HEMA/NIPAAm) membrane increased by 150% when temperature was increased from 20 to 45 °C. The protein adsorption and antifouling performance of the poly(HEMA/MAA) and poly(HEMA/NIPAAm) membranes also exhibit pH and temperature responsive properties.
