Publications in Scientific Journals:
F. Liebner, R. Dunareanu, M. Opietnik, E. Haimer, M. Wendland, C. Werner, M. Maitz, P. Seib, M.-A. Néouze, A. Potthast, T. Rosenau:
"Shaped, haemocompatible aerogels from cellulose phosphates: Preparation and properties";
Holzforschung,
66
(2012),
3;
317
- 321.
English abstract:
Shaped cellulose phosphate aerogels were obtained for the first time by 1) dissolving cellulose phosphates (DSPO4 0.05-0.5) in molten N-methylmorpholine-N-oxide monohydrate stabilized with N-benzylmorpholine-N-oxide, 2) moulding, 3) regenerating cellulose phosphate from the solidified Lyocell dope using ethanol and 4) converting the alcogels into aerogels by drying with supercritical carbon dioxide.
The novel cellulose phosphate aerogels were found to be promising cell scaffolding and bone re-placement materials. Special features are their interconnected and spread porosity, the highly porous surface and microstructure, good haemocompatibility and suitable hydroxyl apatite-binding environ-ment. Adsorption of Ca2+ ions to the phosphate groups had no influence on inflammation, however, mainly the platelet dependent parameters of haemostasis increased. Platelet adhesion and activation by positive surface charges is suspected.
Keywords:
Lyocell; aerogel; cellulose phosphate; haemocompatibility; lightweight material; cell scaffolding
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1515/HF.2011.163
Created from the Publication Database of the Vienna University of Technology.