Beta-cyclodextrin functionalized MWCNT: a potential nano-membrane material for mixed matrix gas separation membranes development
In this paper, synthesized (raw) multi-walled carbon nanotubes (rMWCNTs) were functionalized with beta-cyclodextrin (bC) using Chen’s soft cutting technique. Raw multi-walled carbon nanotubes (rMWCNTs) and beta-cyclodextrin functionalized multi-walled carbon nanotubes (bCfMWCNTs) were characterized...
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Elsevier B.V.
2013
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| _version_ | 1796859433705275392 |
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| author | Aroona, Mohammad Ali Ismail, Ahmad Fauzi Matsuura, Takeshi |
| author_facet | Aroona, Mohammad Ali Ismail, Ahmad Fauzi Matsuura, Takeshi |
| author_sort | Aroona, Mohammad Ali |
| collection | ePrints |
| description | In this paper, synthesized (raw) multi-walled carbon nanotubes (rMWCNTs) were functionalized with beta-cyclodextrin (bC) using Chen’s soft cutting technique. Raw multi-walled carbon nanotubes (rMWCNTs) and beta-cyclodextrin functionalized multi-walled carbon nanotubes (bCfMWCNTs) were characterized by transmission electron microscope (TEM). Neat polyimide (PI) and polyimide/bCfMWCNTs mixed matrix membranes were fabricated by immersion precipitation method. Pure methane and carbon dioxide were used as test gases to measure the permeances of membrane samples. Thermal properties of membranes and MWCNTs were characterized by differential scanning calorimetery (DSC) and thermogravimetric analysis (TGA), respectively. The TEM results showed that beta-cyclodextrin cannot only attach to the inner and outer surface of the MWCNT walls but also fill the open-ended tips of the MWCNTs. TGA thermograms showed that bCfMWCNTs are thermally less stable than rMWCNTs due to the decomposition of beta-cyclodextrin layer, which occurred before the decomposition of rMWCNTs. According to the DSC experiment, the glass transition temperature (Tg) increased as bCfMWCNTs increases in the polymer matrix. The increase in glass transition was attributed to good dispersion of the bCfMWCNTs in the polymer matrix as a result of improved attachment of bCfMWCNTs to the polymer segments. Separation properties and morphology (and distribution of bCfMWCNTs within the polymer matrix) of the fabricated membranes were analyzed by using permeation test and cross sectional FESEM micrographs respectively. Permeation test results revealed that the ideal CO2/CH4 selectivity increased considerably from neat polyimide membrane to polyimide/bCfMWCNTs mixed matrix membranes. Cross sectional FESEM results showed that well dispersed bCfMWCNTs within the polymer matrix are observable especially in case of PI/6 wt.% BFBM MMM. |
| first_indexed | 2024-03-05T19:27:06Z |
| format | Article |
| id | utm.eprints-49367 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:27:06Z |
| publishDate | 2013 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | utm.eprints-493672018-11-30T06:55:18Z http://eprints.utm.my/49367/ Beta-cyclodextrin functionalized MWCNT: a potential nano-membrane material for mixed matrix gas separation membranes development Aroona, Mohammad Ali Ismail, Ahmad Fauzi Matsuura, Takeshi TP Chemical technology In this paper, synthesized (raw) multi-walled carbon nanotubes (rMWCNTs) were functionalized with beta-cyclodextrin (bC) using Chen’s soft cutting technique. Raw multi-walled carbon nanotubes (rMWCNTs) and beta-cyclodextrin functionalized multi-walled carbon nanotubes (bCfMWCNTs) were characterized by transmission electron microscope (TEM). Neat polyimide (PI) and polyimide/bCfMWCNTs mixed matrix membranes were fabricated by immersion precipitation method. Pure methane and carbon dioxide were used as test gases to measure the permeances of membrane samples. Thermal properties of membranes and MWCNTs were characterized by differential scanning calorimetery (DSC) and thermogravimetric analysis (TGA), respectively. The TEM results showed that beta-cyclodextrin cannot only attach to the inner and outer surface of the MWCNT walls but also fill the open-ended tips of the MWCNTs. TGA thermograms showed that bCfMWCNTs are thermally less stable than rMWCNTs due to the decomposition of beta-cyclodextrin layer, which occurred before the decomposition of rMWCNTs. According to the DSC experiment, the glass transition temperature (Tg) increased as bCfMWCNTs increases in the polymer matrix. The increase in glass transition was attributed to good dispersion of the bCfMWCNTs in the polymer matrix as a result of improved attachment of bCfMWCNTs to the polymer segments. Separation properties and morphology (and distribution of bCfMWCNTs within the polymer matrix) of the fabricated membranes were analyzed by using permeation test and cross sectional FESEM micrographs respectively. Permeation test results revealed that the ideal CO2/CH4 selectivity increased considerably from neat polyimide membrane to polyimide/bCfMWCNTs mixed matrix membranes. Cross sectional FESEM results showed that well dispersed bCfMWCNTs within the polymer matrix are observable especially in case of PI/6 wt.% BFBM MMM. Elsevier B.V. 2013 Article PeerReviewed Aroona, Mohammad Ali and Ismail, Ahmad Fauzi and Matsuura, Takeshi (2013) Beta-cyclodextrin functionalized MWCNT: a potential nano-membrane material for mixed matrix gas separation membranes development. Separation and Purification Technology, 115 . pp. 39-50. ISSN 1383-5866 https://doi.org/10.1016/j.seppur.2013.04.025 |
| spellingShingle | TP Chemical technology Aroona, Mohammad Ali Ismail, Ahmad Fauzi Matsuura, Takeshi Beta-cyclodextrin functionalized MWCNT: a potential nano-membrane material for mixed matrix gas separation membranes development |
| title | Beta-cyclodextrin functionalized MWCNT: a potential nano-membrane material for mixed matrix gas separation membranes development |
| title_full | Beta-cyclodextrin functionalized MWCNT: a potential nano-membrane material for mixed matrix gas separation membranes development |
| title_fullStr | Beta-cyclodextrin functionalized MWCNT: a potential nano-membrane material for mixed matrix gas separation membranes development |
| title_full_unstemmed | Beta-cyclodextrin functionalized MWCNT: a potential nano-membrane material for mixed matrix gas separation membranes development |
| title_short | Beta-cyclodextrin functionalized MWCNT: a potential nano-membrane material for mixed matrix gas separation membranes development |
| title_sort | beta cyclodextrin functionalized mwcnt a potential nano membrane material for mixed matrix gas separation membranes development |
| topic | TP Chemical technology |
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