期刊
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
卷 12, 期 2, 页码 262-272出版社
SPRINGER
DOI: 10.1007/s11705-017-1682-7
关键词
poly(vinyl chloride-r-acrylic acid); negatively charged PVC membrane; anti-fouling; heavy metal adsorption; Cu(II) removal
资金
- National High Technology Research and Development Program of China [2012AA03A602]
- National Basic Research Program of China [2009CB623402]
- National Natural Science Foundation of China [20974094]
A series of amphiphilic copolymers containing poly(vinyl chloride-r-acrylic acid) (P(VC-r-AA) ) was synthesized and used to prepare membranes via a nonsolvent induced phase separation method. The prepared membranes were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, and water contact angle and zeta potential measurements. The copolymer P(VC-r-AA) chains did not dissolved in a coagulation bath, indicating that the AA segments were completely retained within the membrane. Enriching degree of AA segments in surface layer was 2 for copolymer membrane. In addition, the introduction of AA segments made the membrane electronegative and hydrophilic so that the membrane was sensitive to the solution pH. The fouling resistance, adsorption of Cu(II), Cr(III) and Ce(IV) ions and the desorption properties of the membranes were also determined. The copolymer membranes exhibited good antifouling performance with a fouling reversibility of 92%. The membranes also had good adsorption capacities for Cu(II), Cr(III) and Ce(IV) ions. The optimal pH for Cu(II) adsorption was 6 and the copolymer membrane has potential applications for low concentration Cu(II) removal.
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