eprintid: 1427970
rev_number: 32
eprint_status: archive
userid: 608
dir: disk0/01/42/79/70
datestamp: 2014-04-30 18:33:10
lastmod: 2021-10-05 00:42:47
status_changed: 2014-04-30 18:33:10
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Lee, KY
creators_name: Blaker, JJ
creators_name: Murakami, R
creators_name: Heng, JY
creators_name: Bismarck, A
title: Phase behavior of medium and high internal phase water-in-oil emulsions stabilized solely by hydrophobized bacterial cellulose nanofibrils.
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
note: © 2013 American Chemical Society. Terms of Use CC-BY.
abstract: Water-in-oil emulsions stabilized solely by bacterial cellulose nanofibers (BCNs), which were hydrophobized by esterification with organic acids of various chain lengths (acetic acid, C2-; hexanoic acid, C6-; dodecanoic acid, C12-), were produced and characterized. When using freeze-dried C6-BCN and C12-BCN, only a maximum water volume fraction (ϕw) of 60% could be stabilized, while no emulsion was obtained for C2-BCN. However, the maximum ϕw increased to 71%, 81%, and 77% for C2-BCN, C6-BCN, and C12-BCN, respectively, 150 h after the initial emulsification, thereby creating high internal phase water-in-toluene emulsions. The observed time-dependent behavior of these emulsions is consistent with the disentanglement and dispersion of freeze-dried modified BCN bundles into individual nanofibers with time. These emulsions exhibited catastrophic phase separation when ϕw was increased, as opposed to catastrophic phase inversion observed for other Pickering emulsions.
date: 2014-01-21
official_url: http://dx.doi.org/10.1021/la4032514
vfaculties: VENG
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
article_type_text: Journal Article, Research Support, Non-U.S. Gov't
verified: verified_manual
elements_source: PubMed
elements_id: 942815
doi: 10.1021/la4032514
language_elements: aa
lyricists_name: Lee, Koon
lyricists_id: KYLEE17
full_text_status: public
publication: Langmuir
volume: 30
number: 2
pagerange: 452 - 460
event_location: United States
citation:        Lee, KY;    Blaker, JJ;    Murakami, R;    Heng, JY;    Bismarck, A;      (2014)    Phase behavior of medium and high internal phase water-in-oil emulsions stabilized solely by hydrophobized bacterial cellulose nanofibrils.                   Langmuir , 30  (2)   452 - 460.    10.1021/la4032514 <https://doi.org/10.1021/la4032514>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1427970/1/la4032514.pdf