Mixed solutions of an associating polymer with a cleavable surfactant
(2005) In Langmuir 21(21). p.9756-9763- Abstract
- Mixtures of hydrophobically modified hydroxyethyl cellulose (HMHEC) and alkali-sensitive cleavable betaine ester surfactants have been studied by viscometry, H-1 NMR, absorbance measurements, and birefringence determinations. Before the hydrolysis, the surfactants behaved as conventional nondegradable surfactants in terms of the effect on the viscosity of increasing surfactant concentration. As the surfactants were hydrolyzed, systems with time-dependent viscosity were obtained. The viscosity either decreased monotonically or went through a maximum as a function of time, depending on the initial surfactant concentration. Different surfactant chain lengths gave rise to different viscosity profiles. The rate of hydrolysis, and thus the... (More)
- Mixtures of hydrophobically modified hydroxyethyl cellulose (HMHEC) and alkali-sensitive cleavable betaine ester surfactants have been studied by viscometry, H-1 NMR, absorbance measurements, and birefringence determinations. Before the hydrolysis, the surfactants behaved as conventional nondegradable surfactants in terms of the effect on the viscosity of increasing surfactant concentration. As the surfactants were hydrolyzed, systems with time-dependent viscosity were obtained. The viscosity either decreased monotonically or went through a maximum as a function of time, depending on the initial surfactant concentration. Different surfactant chain lengths gave rise to different viscosity profiles. The rate of hydrolysis, and thus the time-dependency of the surfactant concentration, could be controlled by changing the pH of the solution. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/157414
- author
- Karlberg, Maria LU ; Stjerndahl, M ; Lundberg, D and Piculell, Lennart LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Langmuir
- volume
- 21
- issue
- 21
- pages
- 9756 - 9763
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000232453300057
- scopus:27144548846
- ISSN
- 0743-7463
- DOI
- 10.1021/la051205u
- language
- English
- LU publication?
- yes
- id
- 5e544055-a861-40d2-9dd1-5f87ef2aa2bd (old id 157414)
- date added to LUP
- 2016-04-01 12:23:06
- date last changed
- 2022-01-27 02:59:50
@article{5e544055-a861-40d2-9dd1-5f87ef2aa2bd, abstract = {{Mixtures of hydrophobically modified hydroxyethyl cellulose (HMHEC) and alkali-sensitive cleavable betaine ester surfactants have been studied by viscometry, H-1 NMR, absorbance measurements, and birefringence determinations. Before the hydrolysis, the surfactants behaved as conventional nondegradable surfactants in terms of the effect on the viscosity of increasing surfactant concentration. As the surfactants were hydrolyzed, systems with time-dependent viscosity were obtained. The viscosity either decreased monotonically or went through a maximum as a function of time, depending on the initial surfactant concentration. Different surfactant chain lengths gave rise to different viscosity profiles. The rate of hydrolysis, and thus the time-dependency of the surfactant concentration, could be controlled by changing the pH of the solution.}}, author = {{Karlberg, Maria and Stjerndahl, M and Lundberg, D and Piculell, Lennart}}, issn = {{0743-7463}}, language = {{eng}}, number = {{21}}, pages = {{9756--9763}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Langmuir}}, title = {{Mixed solutions of an associating polymer with a cleavable surfactant}}, url = {{http://dx.doi.org/10.1021/la051205u}}, doi = {{10.1021/la051205u}}, volume = {{21}}, year = {{2005}}, }