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Preparation of Polyelectrolyte Nanotubes by a Pressure‐filter‐template Technique Using Microporous Anodic Aluminum Oxide (AAO) as the Template
Author(s) -
Meng Xiuxia,
Yang Naitao,
Tan Xiaoyao
Publication year - 2009
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200990323
Subject(s) - microporous material , polyelectrolyte , chemistry , scanning electron microscope , chemical engineering , transmission electron microscopy , nanotube , anodizing , nanotechnology , materials science , aluminium , organic chemistry , carbon nanotube , polymer , composite material , engineering
Polyelectrolyte nanotubes of poly(sodium 4‐styrene‐sulfonate) (PSS) with cationic poly(diallyl dimethyl ammonium chloride) (PDDA) (PSS/PDDA) were fabricated by a pressure‐filter‐template technique using microporous anodic aluminum oxide (AAO) as the template. UV‐Vis spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray diffraction (XRD) and infrared spectroscopy (FT‐IR) were applied to characterize the obtained PSS/PDDA nanotubes. The results have shown that the PSS/PDDA nanotubes exhibit an amorphous structure and have the outer diameter of 200 nm and length of 25 µm respectively, which are in good agreement with the dimensions of the AAO template pores. The wall thickness of the nanotubes may be controlled by the number of the self‐assembled layers. Formation of the nanotubes follows a layer‐by‐layer (LbL) mechanism due to the electrostatic interactions, where the SO − 3 groups of PSS are first adsorbed on the Lewis acid sites of AAO template pores.