Cellulose films: designing template-free nanoporous cellulose films on semiconducting surfaces

Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada
Ana P CarapetoAna Maria B Do Rego

Abstract

In this work, we report the preparation of ultrathin submicro- and nanoporous cellulose films onto Si (100). The effect of different experimental conditions of preparation on the film surface morphology was studied, namely the role of the film casting method (spin- versus dip-coating), solvent (toluene or tetrahydrofuran), substrate pretreatment (hydrophilicity degree), and regeneration procedure with HCl vapors (two consecutive dips followed by regeneration or regeneration after each dip). The surface morphological structures presented in this work were never obtained before without the use of templates. A rather regular two-dimensional pore network was obtained onto the less hydrophilic Si substrate (contact angle≅68°), after two consecutive dips (with an intercalary rotation of 180º) in trimethylsilyl cellulose diluted in toluene and regeneration at the end. All the surfaces were characterized by atomic force microscopy.

References

Oct 7, 2004·Macromolecular Bioscience·Wakako Kasai, Tetsuo Kondo
Feb 24, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Vicente ParraMarcel Bouvet
May 17, 2007·The Review of Scientific Instruments·I HorcasA M Baro
Jul 21, 2007·Science·Charles R Martin, Zuzanna S Siwy
Nov 10, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Ana Maria FerrariaManuel ReiVilar
Mar 12, 2010·Nanotechnology·V MussiU Valbusa

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Citations

Aug 1, 2015·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·A P CarapetoA M Botelho do Rego

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