Thermal transitions of DODAB vesicular dispersions
(2005) In Colloid and Polymer Science 283(12). p.1376-1381- Abstract
- Two endothermic transitions, at 36 degrees C and 44 degrees C, were observed with differential scanning calorimetry (DSC) upon heating dioctadecyldimethylammonium bromide vesicle dispersions that were equilibrated below 15 degrees C while in samples kept at 25 degrees C there was only the transition at 44 degrees C, which was shown to be the gel to liquid-crystalline transition by H-1-NMR measurements. The transition at 36 degrees C was reversed in an exothermic transition around 13 degrees C upon cooling. The slowness of this transition at ambient temperatures suggests that the presence of the transition at 36 degrees C in a DSC upscan depends strongly on the sample history.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/157272
- author
- Cocquyt, J ; Olsson, Ulf LU ; Olofsson, Gerd LU and Van der Meeren, P
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Colloid and Polymer Science
- volume
- 283
- issue
- 12
- pages
- 1376 - 1381
- publisher
- Springer
- external identifiers
-
- wos:000232778200015
- scopus:27744565710
- ISSN
- 0303-402X
- DOI
- 10.1007/s00396-005-1347-9
- language
- English
- LU publication?
- yes
- id
- 35917e1a-1576-48b3-ac82-5a0aba6a0f12 (old id 157272)
- date added to LUP
- 2016-04-01 12:27:41
- date last changed
- 2022-01-27 05:21:08
@article{35917e1a-1576-48b3-ac82-5a0aba6a0f12, abstract = {{Two endothermic transitions, at 36 degrees C and 44 degrees C, were observed with differential scanning calorimetry (DSC) upon heating dioctadecyldimethylammonium bromide vesicle dispersions that were equilibrated below 15 degrees C while in samples kept at 25 degrees C there was only the transition at 44 degrees C, which was shown to be the gel to liquid-crystalline transition by H-1-NMR measurements. The transition at 36 degrees C was reversed in an exothermic transition around 13 degrees C upon cooling. The slowness of this transition at ambient temperatures suggests that the presence of the transition at 36 degrees C in a DSC upscan depends strongly on the sample history.}}, author = {{Cocquyt, J and Olsson, Ulf and Olofsson, Gerd and Van der Meeren, P}}, issn = {{0303-402X}}, language = {{eng}}, number = {{12}}, pages = {{1376--1381}}, publisher = {{Springer}}, series = {{Colloid and Polymer Science}}, title = {{Thermal transitions of DODAB vesicular dispersions}}, url = {{http://dx.doi.org/10.1007/s00396-005-1347-9}}, doi = {{10.1007/s00396-005-1347-9}}, volume = {{283}}, year = {{2005}}, }