Journal
MACROMOLECULES
Volume 43, Issue 20, Pages 8656-8663Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ma1012978
Keywords
-
Categories
Funding
- National Institutes of Health [R01 EB006158]
- National Science Foundation Center [DMR-0939850]
Ask authors/readers for more resources
Complexes of sodium poly(4-styrenesullonate) (NaPSS) and poly(diallyldimethylammonium chloride) (PDADMAC) were formed on mixing equimolar solutions in high salt concentration. Under ultracentrifugal fields, the complex precipitates were transformed into compact polyelectrolyte complexes (CoPECs), which showed extensive porosity. The mechanical properties of CoPECS make them attractive for bioimplants and tissue engineering applications. Free NaPSS chains in the closed pores of CoPECs create excess osmotic pressure, which controls the pore size and contributes to the mechanical resistance of the material. The mechanical properties of CoPECs, modulated by the ionic strength of the doping medium, were studied by uniaxial tensile testing and the stress-strain data were fit to a three-element Maxwell model which revealed at least two regimes of stress relaxation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available