Polymer-lipid interactions: biomimetic self-assembly behaviour and surface properties of poly(styrene-alt-maleic acid) with diacylphosphatidylcholines

Virginia Saez-Martinez*, Patchara Punyamoonwongsa, Brian J. Tighe

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Abstract Various lubricating body fluids at tissue interfaces are composed mainly of combinations of phospholipids and amphipathic apoproteins. The challenge in producing synthetic replacements for them is not replacing the phospholipid, which is readily available in synthetic form, but replacing the apoprotein component, more specifically, its unique biophysical properties rather than its chemistry. The potential of amphiphilic reactive hypercoiling behaviour of poly(styrene-alt-maleic acid) (PSMA) was studied in combination with two diacylphosphatidylcholines (PC) of different chain lengths in aqueous solution. The surface properties of the mixtures were characterized by conventional Langmuir-Wilhelmy balance (surface pressure under compression) and the du Noüy tensiometer (surface tension of the non-compressed mixtures). Surface tension values and 31P NMR demonstrated that self-assembly of polymer-phospholipid mixtures were pH and concentration-dependent. Finally, the particle size and zeta potential measurements of this self-assembly showed that it can form negatively charged nanosized structures that might find use as drug or lipids release systems on interfaces such as the tear film or lung interfacial layers. The structural reorganization was sensitive to the alkyl chain length of the PC.

Original languageEnglish
Pages (from-to)9-16
Number of pages8
JournalReactive and functional polymers
Volume94
Early online date3 Jul 2015
DOIs
Publication statusPublished - Sep 2015

Bibliographical note

© 2015, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Funding: European Union Seventh Framework Programme (FP7/2012 Marie Curie Intra-European Fellowships (IEF), grant agreement THERALENS no. 328708

Keywords

  • amphiphiles
  • biomimetic
  • phosphorylcholine
  • self-assembly
  • surface properties

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