Small-angle neutron scattering of multiwalled carbon nanotubes in aqueous suspensions in presence of laponite platelets or cetyltrimethylammonium bromide
The results of small angle neutron scattering (SANS) study of semidiluted 0.1 and 0.3 % wt aqueous suspensions of multiwalled carbon nanotubes (MWCNTs) are reported. The additives of Laponite platelets or cationic surfactant cetyltrimethylammonium bromide (CTAB) were used for enhancing the dispersio...
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Institute for Nuclear Research, National Academy of Sciences of Ukraine
2013-12-01
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| Series: | Ядерна фізика та енергетика |
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| Online Access: | http://jnpae.kinr.kiev.ua/14.4/Articles_Pdf/jnpae-2013-14-0372-Bulavin.pdf |
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| author | L. A. Bulavin V. S. Savenko N. I. Lebovka A. I. Kuklin D. V. Soloviov O. I. Ivankov |
| author_facet | L. A. Bulavin V. S. Savenko N. I. Lebovka A. I. Kuklin D. V. Soloviov O. I. Ivankov |
| author_sort | L. A. Bulavin |
| collection | DOAJ |
| description | The results of small angle neutron scattering (SANS) study of semidiluted 0.1 and 0.3 % wt aqueous suspensions of multiwalled carbon nanotubes (MWCNTs) are reported. The additives of Laponite platelets or cationic surfactant cetyltrimethylammonium bromide (CTAB) were used for enhancing the dispersion ability of MWCNTs. At high values of wave vector q, (1 nm-1 < q < 3.5 nm-1) all samples exhibited behavior characteristic for rigid rods (i.e., q-1 variation of neutron scattering intensity was observed). At low values of q (0.1 nm-1 < q < 0.5 nm-1), the neutron scattering intensity followed the power law q- with exponent the in the range of 1.2 - 2, depending on concentration of the Laponite platelets or CTAB. Addition of Laponite platelets or CTAB allowed improvement of dispersion ability of MWCNTs. The effects were optimal at the certain value of Laponite/MWCNTs ratio X 0.5 or CTAB concentration (0.2 %wt). SANS also revealed existence of a mesh structure in MWCNT aggregates with characteristic mesh size of 7.4 nm and 6.3 nm in suspensions with concentration of 0.1 and 0.3 % wt of MWCNTs, respectively. |
| format | Article |
| id | doaj-art-d6043344dae14286a934e52dfbebe6a7 |
| institution | OA Journals |
| issn | 1818-331X 2074-0565 |
| language | English |
| publishDate | 2013-12-01 |
| publisher | Institute for Nuclear Research, National Academy of Sciences of Ukraine |
| record_format | Article |
| series | Ядерна фізика та енергетика |
| spelling | doaj-art-d6043344dae14286a934e52dfbebe6a72025-08-20T02:19:38ZengInstitute for Nuclear Research, National Academy of Sciences of UkraineЯдерна фізика та енергетика1818-331X2074-05652013-12-01144372376Small-angle neutron scattering of multiwalled carbon nanotubes in aqueous suspensions in presence of laponite platelets or cetyltrimethylammonium bromideL. A. Bulavin0V. S. Savenko1N. I. Lebovka2A. I. Kuklin3D. V. Soloviov4O. I. Ivankov5Department of Molecular Physics, Taras Shevchenko National University, Kyiv, UkraineDepartment of Molecular Physics, Taras Shevchenko National University, Kyiv, UkraineInstitute of Biocolloidal Chemistry, National Academy of Sciences of Ukraine, Kyiv, UkraineThe Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, RussiaThe Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, RussiaThe Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, RussiaThe results of small angle neutron scattering (SANS) study of semidiluted 0.1 and 0.3 % wt aqueous suspensions of multiwalled carbon nanotubes (MWCNTs) are reported. The additives of Laponite platelets or cationic surfactant cetyltrimethylammonium bromide (CTAB) were used for enhancing the dispersion ability of MWCNTs. At high values of wave vector q, (1 nm-1 < q < 3.5 nm-1) all samples exhibited behavior characteristic for rigid rods (i.e., q-1 variation of neutron scattering intensity was observed). At low values of q (0.1 nm-1 < q < 0.5 nm-1), the neutron scattering intensity followed the power law q- with exponent the in the range of 1.2 - 2, depending on concentration of the Laponite platelets or CTAB. Addition of Laponite platelets or CTAB allowed improvement of dispersion ability of MWCNTs. The effects were optimal at the certain value of Laponite/MWCNTs ratio X 0.5 or CTAB concentration (0.2 %wt). SANS also revealed existence of a mesh structure in MWCNT aggregates with characteristic mesh size of 7.4 nm and 6.3 nm in suspensions with concentration of 0.1 and 0.3 % wt of MWCNTs, respectively.http://jnpae.kinr.kiev.ua/14.4/Articles_Pdf/jnpae-2013-14-0372-Bulavin.pdfSANSelastic neutron scatteringnanotubesLaponite plateletsCTAB |
| spellingShingle | L. A. Bulavin V. S. Savenko N. I. Lebovka A. I. Kuklin D. V. Soloviov O. I. Ivankov Small-angle neutron scattering of multiwalled carbon nanotubes in aqueous suspensions in presence of laponite platelets or cetyltrimethylammonium bromide Ядерна фізика та енергетика SANS elastic neutron scattering nanotubes Laponite platelets CTAB |
| title | Small-angle neutron scattering of multiwalled carbon nanotubes in aqueous suspensions in presence of laponite platelets or cetyltrimethylammonium bromide |
| title_full | Small-angle neutron scattering of multiwalled carbon nanotubes in aqueous suspensions in presence of laponite platelets or cetyltrimethylammonium bromide |
| title_fullStr | Small-angle neutron scattering of multiwalled carbon nanotubes in aqueous suspensions in presence of laponite platelets or cetyltrimethylammonium bromide |
| title_full_unstemmed | Small-angle neutron scattering of multiwalled carbon nanotubes in aqueous suspensions in presence of laponite platelets or cetyltrimethylammonium bromide |
| title_short | Small-angle neutron scattering of multiwalled carbon nanotubes in aqueous suspensions in presence of laponite platelets or cetyltrimethylammonium bromide |
| title_sort | small angle neutron scattering of multiwalled carbon nanotubes in aqueous suspensions in presence of laponite platelets or cetyltrimethylammonium bromide |
| topic | SANS elastic neutron scattering nanotubes Laponite platelets CTAB |
| url | http://jnpae.kinr.kiev.ua/14.4/Articles_Pdf/jnpae-2013-14-0372-Bulavin.pdf |
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