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...

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Main Authors: Jonoobi, Mehdi, Harun, Jalaluddin, Mathew, Aji P., Hussein, Mohd Zobir, Oksman, Kristiina
Format: Article
Language:English
English
Published: Springer 2010
Online Access:http://psasir.upm.edu.my/id/eprint/16316/1/Preparation%20of%20cellulose%20nanofibers%20with%20hydrophobic%20surface%20characteristics.pdf
http://psasir.upm.edu.my/id/eprint/16316/
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Institution: Universiti Putra Malaysia
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spelling my.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
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
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.
format Article
author Jonoobi, Mehdi
Harun, Jalaluddin
Mathew, Aji P.
Hussein, Mohd Zobir
Oksman, Kristiina
spellingShingle Jonoobi, Mehdi
Harun, Jalaluddin
Mathew, Aji P.
Hussein, Mohd Zobir
Oksman, Kristiina
Preparation of cellulose nanofibers with hydrophobic surface characteristics.
author_facet Jonoobi, Mehdi
Harun, Jalaluddin
Mathew, Aji P.
Hussein, Mohd Zobir
Oksman, Kristiina
author_sort Jonoobi, Mehdi
title Preparation of cellulose nanofibers with hydrophobic surface characteristics.
title_short 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_sort preparation of cellulose nanofibers with hydrophobic surface characteristics.
publisher Springer
publishDate 2010
url http://psasir.upm.edu.my/id/eprint/16316/1/Preparation%20of%20cellulose%20nanofibers%20with%20hydrophobic%20surface%20characteristics.pdf
http://psasir.upm.edu.my/id/eprint/16316/
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