Abstract
A tertiary-amine modified attapulgite (TMATP) had been prepared for an advanced combination. The TMATP was incorporated into the cardo poly(aryl ether ketone) with sulfoalkyl groups site (SPEK) membrane. Fourier transform infrared spectroscopy (FTIR) and the x-ray photoelectron spectroscopy spectra revealed that attapulgite was successfully modified with tertiary amine. The TMATP were uniformly inlaid in the SPEK matrix which presented fine interface adhesion illustrated by SEM images. The introduction of TMATP within SPEK also allowed simultaneously to increase its water uptake and to improve its mechanical properties. Compared with the neat SPEK, under 80°C and low relative humidity conditions, the TMATP/SPEK composite membranes still retain preferable proton conductivity. TGA analysis showed better thermal stability for the TMATP/SPEK composites than SPEK. In addition, the TMATP/SPEK composites possessed good water holding capacity even at elevated temperatures.
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