Preparation of cellulose nanofibers with hydrophobic surface characteristics.
The aim of this study was to develop cellulose nanofibers with hydrophobic surface characteristics using chemical modification. Kenaf fibers were modified using acetic anhydride and cellulose nanofibers were isolated from the acetylated kenaf using mechanical isolation methods. Fourier transform inf...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English English |
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Springer
2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/16316/1/Preparation%20of%20cellulose%20nanofibers%20with%20hydrophobic%20surface%20characteristics.pdf |
| _version_ | 1825945792427327488 |
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| author | Jonoobi, Mehdi Harun, Jalaluddin Mathew, Aji P. Hussein, Mohd Zobir Oksman, Kristiina |
| author_facet | Jonoobi, Mehdi Harun, Jalaluddin Mathew, Aji P. Hussein, Mohd Zobir Oksman, Kristiina |
| author_sort | Jonoobi, Mehdi |
| collection | UPM |
| description | The aim of this study was to develop cellulose nanofibers with hydrophobic surface characteristics using chemical modification. Kenaf fibers were modified using acetic anhydride and cellulose nanofibers were isolated from the acetylated kenaf using mechanical isolation methods. Fourier transform infrared spectroscopy (FTIR) indicated acetylation of the hydroxyl groups of cellulose. The study of the dispersion demonstrated that acetylated cellulose nanofibers formed stable, well-dispersed suspensions in both acetone and ethanol. The contact angle measurements showed that the surface characteristics of nanofibers were changed from hydrophilic to more hydrophobic when acetylated. The microscopy study showed that the acetylation caused a swelling of the kenaf fiber cell wall and that the diameters of isolated nanofibers were between 5 and 50 nm. X-ray analysis showed that the acetylation process reduced the crystallinity of the fibers, whereas mechanical isolation increased it. The method used provides a novel processing route for producing cellulose nanofibers with hydrophobic surfaces. |
| first_indexed | 2024-03-06T07:37:04Z |
| format | Article |
| id | upm.eprints-16316 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T07:37:04Z |
| publishDate | 2010 |
| publisher | Springer |
| record_format | dspace |
| spelling | upm.eprints-163162015-10-08T04:29:13Z http://psasir.upm.edu.my/id/eprint/16316/ Preparation of cellulose nanofibers with hydrophobic surface characteristics. Jonoobi, Mehdi Harun, Jalaluddin Mathew, Aji P. Hussein, Mohd Zobir Oksman, Kristiina The aim of this study was to develop cellulose nanofibers with hydrophobic surface characteristics using chemical modification. Kenaf fibers were modified using acetic anhydride and cellulose nanofibers were isolated from the acetylated kenaf using mechanical isolation methods. Fourier transform infrared spectroscopy (FTIR) indicated acetylation of the hydroxyl groups of cellulose. The study of the dispersion demonstrated that acetylated cellulose nanofibers formed stable, well-dispersed suspensions in both acetone and ethanol. The contact angle measurements showed that the surface characteristics of nanofibers were changed from hydrophilic to more hydrophobic when acetylated. The microscopy study showed that the acetylation caused a swelling of the kenaf fiber cell wall and that the diameters of isolated nanofibers were between 5 and 50 nm. X-ray analysis showed that the acetylation process reduced the crystallinity of the fibers, whereas mechanical isolation increased it. The method used provides a novel processing route for producing cellulose nanofibers with hydrophobic surfaces. Springer 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16316/1/Preparation%20of%20cellulose%20nanofibers%20with%20hydrophobic%20surface%20characteristics.pdf Jonoobi, Mehdi and Harun, Jalaluddin and Mathew, Aji P. and Hussein, Mohd Zobir and Oksman, Kristiina (2010) Preparation of cellulose nanofibers with hydrophobic surface characteristics. Cellulose, 17 (2). pp. 299-307. ISSN 0969-0239; ESSN: 1572-882X 10.1007/s10570-009-9387-9 English |
| spellingShingle | Jonoobi, Mehdi Harun, Jalaluddin Mathew, Aji P. Hussein, Mohd Zobir Oksman, Kristiina Preparation of cellulose nanofibers with hydrophobic surface characteristics. |
| title | Preparation of cellulose nanofibers with hydrophobic surface characteristics. |
| title_full | Preparation of cellulose nanofibers with hydrophobic surface characteristics. |
| title_fullStr | Preparation of cellulose nanofibers with hydrophobic surface characteristics. |
| title_full_unstemmed | Preparation of cellulose nanofibers with hydrophobic surface characteristics. |
| title_short | Preparation of cellulose nanofibers with hydrophobic surface characteristics. |
| title_sort | preparation of cellulose nanofibers with hydrophobic surface characteristics |
| url | http://psasir.upm.edu.my/id/eprint/16316/1/Preparation%20of%20cellulose%20nanofibers%20with%20hydrophobic%20surface%20characteristics.pdf |
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