Collapse and coacervation of a lamellar phase by inter-headgroup bridging

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4363

Title:	Collapse and coacervation of a lamellar phase by inter-headgroup bridging
Authors:	Pal, Antara Bharath, P. Dastidar, Sudipta G. Raghunathan, V.A.
Issue Date:	28-Jan-2012
Publisher:	Royal Society of Chemistry
Citation:	Soft Matter, 2012, Vol.8, p927
Abstract:	We report the collapse of an electrostatically swollen surfactant lamellar phase above a critical concentration of an added nonionic surfactant due to hydrogen bonding between the two types of headgroups. At still higher concentrations of the neutral surfactant a temperature-driven lamellar to coacervate transition is observed. Small-angle X-ray diffraction pattern of the coacervate can be modeled as arising from bilayers with short-range positional correlations, whereas cryo-scanning electron microscopy images show bilayer-like features riddled with pores. Very similar behavior is found when the nonionic polyoxyethylene alkyl ether surfactant is replaced by polyethylene glycol of sufficiently high molecular weight.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/4363
ISSN:	1744-683X 1744-6848 (Online)
Alternative Location:	http://dx.doi.org/10.1039/C2SM06817F
Copyright:	2012 Royal Society of Chemistry
Appears in Collections:	Research Papers (SCM)

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