Physical properties of hierarchically ordered self-assembled planar and spherical membranes

Daniel Carvajal, Ronit Bitton, Jason R. Mantei, Yuri S. Velichko, Samuel I Stupp, Kenneth R. Shull

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The mechanical properties and water permeability of hierarchical self-assembling membranes and sacs formed from oppositely charged high molecular weight hyaluronic acid (HA) and small molecule peptide amphiphiles (PAs) were studied. Techniques to make reproducible 2D planar membranes and 3D spherical sacs from these materials were developed while membrane inflation and osmotic swelling were used to quantify the mechanical properties and water permeability of these structures. It was found that incubation time and concentration of HA used had an effect on the area modulus and water permeability of the membranes. These factors also affected the kinetics of membrane growth as evidenced in SEM micrographs, which showed differences in the structure. Area modulus of membranes changed from about 6 N m-1 for the lower weight percent HA system at the shortest incubation time of 3 minutes, up to 12 N m-1 for the higher weight percent HA system at the longest incubation time of 60 minutes. Water permeability decreased with incubation time, but the lower weight percent HA system showed a lower water permeability when compared to the higher weight percent HA system at the same incubation time. This type of characterization and understanding of the structure-property relationships in self-assembling systems are necessary steps in both using these structures for specific applications and applying this knowledge to design new and better materials in the future.

Original languageEnglish
Pages (from-to)1816-1823
Number of pages8
JournalSoft Matter
Volume6
Issue number8
DOIs
Publication statusPublished - 2010

Fingerprint

Hyaluronic Acid
Physical properties
physical properties
permeability
membranes
Membranes
acids
Water
low weight
water
assembling
mechanical properties
Mechanical properties
Amphiphiles
swelling
peptides
Swelling
molecular weight
Molecular weight
Peptides

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

Cite this

Carvajal, D., Bitton, R., Mantei, J. R., Velichko, Y. S., Stupp, S. I., & Shull, K. R. (2010). Physical properties of hierarchically ordered self-assembled planar and spherical membranes. Soft Matter, 6(8), 1816-1823. https://doi.org/10.1039/b923903k

Physical properties of hierarchically ordered self-assembled planar and spherical membranes. / Carvajal, Daniel; Bitton, Ronit; Mantei, Jason R.; Velichko, Yuri S.; Stupp, Samuel I; Shull, Kenneth R.

In: Soft Matter, Vol. 6, No. 8, 2010, p. 1816-1823.

Research output: Contribution to journalArticle

Carvajal, D, Bitton, R, Mantei, JR, Velichko, YS, Stupp, SI & Shull, KR 2010, 'Physical properties of hierarchically ordered self-assembled planar and spherical membranes', Soft Matter, vol. 6, no. 8, pp. 1816-1823. https://doi.org/10.1039/b923903k
Carvajal, Daniel ; Bitton, Ronit ; Mantei, Jason R. ; Velichko, Yuri S. ; Stupp, Samuel I ; Shull, Kenneth R. / Physical properties of hierarchically ordered self-assembled planar and spherical membranes. In: Soft Matter. 2010 ; Vol. 6, No. 8. pp. 1816-1823.
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