Citation: Tian Sun, Yu-feng Zhang, Chun-lin Chen, Xiang-zhuang Gong, Jian-qiang Meng. Synthesis of Membrane Adsorbers via Surface Initiated ATRP of 2-Dimethylaminoethyl Methacrylate from Microporous PVDF Membranes[J]. Chinese Journal of Polymer Science, ;2014, 32(7): 880-891. doi: 10.1007/s10118-014-1462-5 shu

Synthesis of Membrane Adsorbers via Surface Initiated ATRP of 2-Dimethylaminoethyl Methacrylate from Microporous PVDF Membranes

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State Key Laboratory of Hollow Fiber Membrane Material and Membrane Process, Tianjin Polytechnic University, Tianjin 300387, China

Received Date: 9 October 2013
Revised Date: 31 December 2013

Fund Project: This work was financially supported by the National Natural Science Foundation of China (No. 21274108) and the National High Technology Research and Development Program of China (No. 2012AA03A602). Prof. Jian-qiang Meng thanks Prof. Zi-Chen Li and Mr. Lei Li (Peking University) for BET measurements.

Surface-initiated atom transfer radical polymerization (SI-ATRP) was used to tether poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) onto microporous PVDF membranes in order to synthesize membrane adsorbers for protein adsorption. The alkaline treatment and bromine addition reaction were used to anchor ATRP initiators on membrane surface. Then PDMAEMA was grafted from the membrane surface via SI-ATRP. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) revealed the chemical composition and surface topography of the PVDF-g-PDMAEMA membrane surfaces. These results showed that PDMAEMA was grafted from the membrane surface successfully and a grafting yield as high as 1500 mg/cm2 was achieved. The effects of the grafting time and the density of initiators on the static and dynamic binding capacity of bovine serum albumin (BSA) were systematically investigated. Both the static and dynamic binding capacities increase with the bromination and polymerization time. However, the benefits of the initiator density on binding capacities are limited by the graft density of PDMAEMA chains.
- ATRP,
- PVDF membrane,
- Protein adsorption,
- Polyelectrolytes,
- Graft polymerization
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沈阳化工大学材料科学与工程学院沈阳 110142