Abstract:

Molecularly imprinted polymer composite membrane (MICM) was prepared with PVDF membrane as
the supporting membrane, Sudan Ⅰ as the template molecule, DMF and PEG20000 as the porogen through in-situ
polymerization by UV irradiation. SEM and FITR-ATR spectroscopy were employed to describe surface feature and
structure of the membrane. Three parameters such as binding capacity, selective permeation and stability of MICM were
further discussed. The results showed that hydrogen bonds of Sudan Ⅰ and MAA could interact with each other and
constitute the bonding sites in caves. The porous surface of MICM also exhibited higher permeation selectivity for the
template molecule and its analogues. Furthermore, MICM can work steadily at 30–80 ℃ and pH 1.5–10.

Key words: molecularly imprinted composite membrane (MICM), Sudan Ⅰ, in-situ polymerization, porous, characterization