Journal
RSC ADVANCES
Volume 4, Issue 106, Pages 61580-61588Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra10315g
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Funding
- Academy of Sciences of the Czech Republic [M200501201]
- Grant Agency of the Czech Republic [13-08336S]
- Ministry of Education, Youth and Sports of the Czech Republic [MSMT KONTAKT II LH14079]
- Joint Project ASCR/CONICET [2012CZ006]
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This study is focused on thermoresponsive glycogen-graft-poly(2-alkyl-2-oxazolines), a new group of nanostructured hybrid dendrimeric stimuli-responsive polymers connecting the body's own biodegradable polysaccharidic dendrimer glycogen with the widely tuneable thermoresponsive behavior of polypeptide-analogic poly(2-alkyl-2-oxazolines), which are known to be biocompatible. Glycogen-graft-poly(2-alkyl-2-oxazolines) were prepared by a simple one-pot two-step procedure involving cationic ring-opening polymerization of 2-alkyl-2-oxazolines followed by termination of the living cationic ends with sodium glycogenate. As confirmed by light and X-ray scattering, as well as cryo-transmission electron microscopy, the grafted dendrimer structure allows easy adjustment of the cloud point temperature, the concentration dependence and nanostructure of the self-assembled phase separated polymer by crosstalk during graft composition, the graft length and the grafting density, in a very wide range.
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