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

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 an...

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Bibliographic Details
Published in:Chinese journal of polymer science 2014-07, Vol.32 (7), p.880-891
Main Authors: Sun, Tian, Zhang, Yu-feng, Chen, Chun-lin, Gong, Xiang-zhuang, Meng, Jian-qiang
Format: Article
Language:English
Subjects:
Binding
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Density
Grafting
Industrial Chemistry/Chemical Engineering
Initiators
Membranes
Polymer Sciences
Polymerization
Polyvinylidene fluorides
Surface chemistry
原子转移自由基聚合
合成膜
引发剂浓度
微孔膜
甲基丙烯酸酯
聚偏氟乙烯
膜吸附
膜表面
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Summary: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 ~g/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.
ISSN:0256-7679
1439-6203
DOI:10.1007/s10118-014-1462-5