Identification of surfactants aggregates on graphitic surface of carbon nanotubes

• Main Authors: Affandi, N.D.N (Author), Fadil, F. (Author), Misnon, M.I (Author)
• Format: Article
• Language: English
• Published: Taylor and Francis Ltd. 2019
• Subjects: Aggregates; aggregates morphology; aggregates size; anion; Anionic surfactants; Article; Atomic force; atomic force spectroscopy; bromide; carbon nanotubes; Carbon nanotubes; Cationic surfactants; cetyltrimethyl ammonium bromide; Cetyltrimethylammonium bromide; chemical structure; critical micelle concentration; dodecyl sulfate sodium; field emission scanning electron microscopy; graphite; hydrophobicity; ionic surfactant; Morphology; multi walled nanotube; Multiwalled carbon nanotubes (MWCN); nanoencapsulation; Nanotubes; Non-covalent; Nonionic; nonionic surfactant; particle size; polysorbate 80; Polysorbate 80; priority journal; Raman spectrometry; Sodium compounds; Sodium dodecyl sulphate; static electricity; Sulfur compounds; Surface active agents; Surface contour; surface property; surfactant; surfactants; surfactants affinity; Tween 80; unclassified drug
• Online Access: View Fulltext in Publisher; View in Scopus
• ISBN: 17458080 (ISSN)
• ISSN: 17458080 (ISSN)
• DOI: 10.1080/17458080.2019.1614168

There are a relatively large number of studies on surfactants facilitates the dispersion of multi-walled carbon nanotubes (MWCNTs), however reports for both orientation and size aggregation of surfactants on MWCNTs are scarcely described. In this study, we demonstrate the visualization of the surfactants aggregates onto MWCNTs using atomic force microscopic (AFM) and field emission electron scanning microscopy (FESEM) to provide information on the orientation and the grains size of surfactants-MWCNTs aggregates. MWCNTs treated with surfactants of different charges, namely sodium dodecyl sulphate (SDS), the anionic, cetyltrimethyl ammonium bromide (CTAB), the cationic and polysorbate 80 (Tween-80), the non-ionic, displayed substantial pattern of surfactant-MWCNTs surface contours. Raman spectroscopy analysis has been presented in order to report the characteristic of defective MWCNTs graphitize structure upon non-covalent adsorption of respective surfactants. © 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.