The effect of surfactants on chemical development of ion track nanopores in polymer

The use of surfactants in etching of the track membranes (TMs) enables one to control the pore shape in TMs. This technique is useful to improve flow rate, and to optimize the retention and permeation properties of TMs. The addition of an anionic surfactant, sodium dodecyl diphenyloxide disulphonate...

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Bibliographic Details
Published in:Journal of physics. Conference series 2010-11, Vol.248 (1), p.012060
Main Authors: Yamauchi, Y U, Apel, P Y U
Format: Article
Language:English
Subjects:
Adsorption
Etching
Flow velocity
Physics
Polyethylene terephthalate
Surface chemistry
Surfactants
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Summary:The use of surfactants in etching of the track membranes (TMs) enables one to control the pore shape in TMs. This technique is useful to improve flow rate, and to optimize the retention and permeation properties of TMs. The addition of an anionic surfactant, sodium dodecyl diphenyloxide disulphonate (SDDD), to etching solutions leads to the highly tapered pore shape in TMs of the polyethylene terephthalate (PET). To understand the mechanism of the surfactant effect on track etching in the nanometer range, we study the diffusion and adsorption of SDDD on non-etched non-porous, etched non-porous and etched porous PET films. The comparison of non-etched non-porous and etched non-porous films shows the effect of negatively charged surface on the adsorption of surfactant. The comparison of etched non-porous and etched porous PET films shows the different adsorption on film surface and inner wall of nanopore, thus the influence of curvature of the surface on the adsorption of surfactant molecules.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/248/1/012060