Study on synthesis of magnetic nano-sphere polyelectrolyte brush
Liao Dankui1,2, Chen Jingwei1, Ye Guopeng1, Zheng Yanning1, Tang Shulin1, Luo Qiuxian1, He Rili1, Zhou Liqin1,2
1.School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004; 2.Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology,Nanning 530004
Abstract: Polyelectrolyte brushes have attracted much attention because of their good compatibility with biological macromolecules.Used styrene as raw material and polystyrene nano-magnetic core particles (MPS) coated with Fe3O4 were prepared by microemulsion polymerization.Acrylic acid (BA) was used as photoinitiator,acrylic acid (AA) was polyelectrolyte brush and magnetic nanosphere brush (MSPB) with a long chain length controllable was prepared.The effects of BA,AA and polymerization time on the brush chain length of polyelectrolyte were investigated,and the preparation conditions of MSPB were optimized.The structure and properties of MSPB were characterized by DLS,TG and SEM.The results showed that the optimum conditions were as follows:ST 2.5g,BA/ST=0.1(molar ratio),AA/ST=0.9,polymerizaion time 2.0h,the magnetic particle size of MSPB was 152nm,PAA chain length was 160 nm,and with superparamagnetism.The immobilized enzyme activity was 1.75×104u/g carrier and the immobilized enzyme content was 42.9mg/g,the recovery rate of enzyme activity was 93%.It showed that MSPB can provide a good carrier for immobilized enzymes.
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Liao Dankui, Chen Jingwei, Ye Guopeng, Zheng Yanning, Tang Shulin, Luo Qiuxian, He Rili, Zhou Liqin. Study on synthesis of magnetic nano-sphere polyelectrolyte brush. New Chemical Materials, 2018, 46(11): 129-132.
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2018, Vol. 46 
