Temperature-responsive emulsions: The effect of added surfactant

Alava, Cristina; Saunders, Brian R.

doi:10.1016/j.colsurfa.2005.05.032

Cited by 7 publications

(5 citation statements)

References 16 publications

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“…Careful design of copolymer structure can provide thermoresponsive polymer surfactants that confer triggered gelation to emulsions [11], latexes [12] and inorganic particle dispersions [3]. Those studies complement related work for thermogelling food colloids [4] and protein dispersions [5].…”

Section: Introductionmentioning

confidence: 79%

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Thermally-triggered gelation of PLGA dispersions: Towards an injectable colloidal cell delivery system

Fraylich¹,

Liu

Richardson

et al. 2010

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 79%

“…1 using the following equation [29]. 12 3.0 280,000 29.5 a The cloud point temperature was taken at the onset of the turbidity increase. 1 For interpretation of color in Fig.…”

Section: Dilute Plga/mix-pnipam Dispersion Propertiesmentioning

confidence: 99%

Thermally-triggered gelation of PLGA dispersions: Towards an injectable colloidal cell delivery system

Fraylich¹,

Liu

Richardson

et al. 2010

Journal of Colloid and Interface Science

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“…The ability to control separation of an emulsion through environmental triggers is a useful property within a variety of application areas . In particular, the ability to disrupt emulsions at various temperatures is a key property of interest for the application of emulsions in the food industry .…”

mentioning

confidence: 99%

Tripeptide Emulsifiers

Scott

McKnight²,

Tuttle

et al. 2015

Advanced Materials

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This version is available at https://strathprints.strath.ac.uk/54790/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. The majority of the surfactants that are currently in use are based on lipids that are extracted from natural sources, [9][10][11][12][13] however, other surfactants, based on polypeptides, [14][15][16] copolymers [17][18][19] and solid particles (Pickering emulsions) [20][21][22][23][24][25][26][27] are also used.The process by which traditional amphiphilic surfactants stabilize biphasic mixtures by interfacial assembly and the consequent reduction of surface tension is well understood.Although these surfactants are well-suited to stabilize emulsions, they are not always biocompatible or biodegradable. In addition, they may not have sufficient stability at elevated temperatures or extremes of pH, [28][29][30][31][32] , which can limit their utility in a variety of applications.Therefore, it is desirable to identify a class of surfactants that can be tuned, or tailored, to match the application for which they are used. 2Peptide self-assembly is a viable approach for the formation of nanoscale objects. In addition, by inclusion of capping groups such as Fmoc/Boc, self-supporting hydrogels may be formed. 40,41We have developed computational screening methods that enable the di-and tripeptide sequences space to be searched for promising self-assembly candidates. This tool has enabled the discovery of a number of new gels based purely on alpha peptides. 42,43Short peptides and derivatives thereof have also been explored as surfactants and emulsifiers.For example, Zhang et al. 44We demonstrated that these fiber networks are able to stabilize organic droplets (chloroform) within an aqueous solution formed upon brief shaking of the oil/water/peptide mixture by hand, showing enhanced stability compared to SDS. 41The formation of interfacial nanofibrous networks, rather than a surfactant bilayer provides a distinctly diff...

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“…Addition of surfactant to such kind of emulsions appears to decrease the number density of effective chains that bind neighbouring droplets together in the gelled state. This is believed to be the result of increased electrostatic repulsion [42]. Small Angle Neutron Scattering (SANS) measurements [43] indicated that in the poly(NIPAM-PEGMa) emulsion the interfacial polymer chains condensed to give a relatively thick polymer layer at the oil-water interface.…”

Section: Emulsions With a Gelled Continuous Phasementioning

confidence: 99%