TY  - JOUR
A1  - Heinze, Thomas
A1  - Heinze, Ute
A1  - Grothe, Carsten
A1  - Koetz, Joachim
A1  - Lazik, Waldemar
T1  - Starch derivatives of high degree of functionalization : 4. Homogeneous tritylation of starch an subsequent carboxymethylation
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Koetz, Joachim
A1  - Bogen, Iris
A1  - Heinze, Thomas
A1  - Heinze, Ute
A1  - Kulicke, Werner-Michael
A1  - Lange, Silke
T1  - Pecularities in the physico-chemical behaviour of non-statistically substituted carboxymethylcelluloses
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Taubert, Andreas
A1  - Balischewski, Christian
A1  - Hentrich, Doreen
A1  - Elschner, Thomas
A1  - Eidner, Sascha
A1  - Günter, Christina
A1  - Behrens, Karsten
A1  - Heinze, Thomas
T1  - Water-Soluble Cellulose Derivatives Are Sustainable Additives for Biomimetic Calcium Phosphate Mineralization
JF  - Inorganics : open access journal
N2  - The effect of cellulose-based polyelectrolytes on biomimetic calcium phosphate mineralization is described. Three cellulose derivatives, a polyanion, a polycation, and a polyzwitterion were used as additives. Scanning electron microscopy, X-ray diffraction, IR and Raman spectroscopy show that, depending on the composition of the starting solution, hydroxyapatite or brushite precipitates form. Infrared and Raman spectroscopy also show that significant amounts of nitrate ions are incorporated in the precipitates. Energy dispersive X-ray spectroscopy shows that the Ca/P ratio varies throughout the samples and resembles that of other bioinspired calcium phosphate hybrid materials. Elemental analysis shows that the carbon (i.e., polymer) contents reach 10% in some samples, clearly illustrating the formation of a true hybrid material. Overall, the data indicate that a higher polymer concentration in the reaction mixture favors the formation of polymer-enriched materials, while lower polymer concentrations or high precursor concentrations favor the formation of products that are closely related to the control samples precipitated in the absence of polymer. The results thus highlight the potential of (water-soluble) cellulose derivatives for the synthesis and design of bioinspired and bio-based hybrid materials.
KW  - cellulose
KW  - polyamine
KW  - polyammonium salt
KW  - polycarboxylate
KW  - polyzwitterion
KW  - calcium phosphate
KW  - biomineralization
KW  - brushite
KW  - hydroyxapatite
KW  - biomaterial
Y1  - 2016
U6  - https://doi.org/10.3390/inorganics4040033
SN  - 2304-6740
VL  - 4
PB  - MDPI
CY  - Basel
ER  -