TY  - GEN
A1  - Al-Naji, Majd
A1  - Schlaad, Helmut
A1  - Antonietti, Markus
T1  - New (and old) monomers from biorefineries to make polymer chemistry more sustainable
T2  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - This opinion article describes recent approaches to use the "biorefinery" concept to lower the carbon footprint of typical mass polymers, by replacing parts of the fossil monomers with similar or even the same monomer made from regrowing dendritic biomass. Herein, the new and green catalytic synthetic routes are for lactic acid (LA), isosorbide (IS), 2,5-furandicarboxylic acid (FDCA), and p-xylene (pXL). Furthermore, the synthesis of two unconventional lignocellulosic biomass derivable monomers, i.e., alpha-methylene-gamma-valerolactone (MeGVL) and levoglucosenol (LG), are presented. All those have the potential to enter in a cost-effective way, also the mass market and thereby recover lost areas for polymer materials. The differences of catalytic unit operations of the biorefinery are also discussed and the challenges that must be addressed along the synthesis path of each monomers.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1385 
KW  - biodegradable polymers
KW  - biorefineries
KW  - carbohydrate‐ based
KW  - monomers
KW  - green polymers
KW  - lignocellulosic biomass
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-570614
SN  - 1866-8372
IS  - 3
ER  - 
TY  - JOUR
A1  - Al-Naji, Majd
A1  - Schlaad, Helmut
A1  - Antonietti, Markus
T1  - New (and old) monomers from biorefineries to make polymer chemistry more sustainable
JF  - Macromolecular rapid communications
N2  - This opinion article describes recent approaches to use the "biorefinery" concept to lower the carbon footprint of typical mass polymers, by replacing parts of the fossil monomers with similar or even the same monomer made from regrowing dendritic biomass. Herein, the new and green catalytic synthetic routes are for lactic acid (LA), isosorbide (IS), 2,5-furandicarboxylic acid (FDCA), and p-xylene (pXL). Furthermore, the synthesis of two unconventional lignocellulosic biomass derivable monomers, i.e., alpha-methylene-gamma-valerolactone (MeGVL) and levoglucosenol (LG), are presented. All those have the potential to enter in a cost-effective way, also the mass market and thereby recover lost areas for polymer materials. The differences of catalytic unit operations of the biorefinery are also discussed and the challenges that must be addressed along the synthesis path of each monomers.
KW  - biodegradable polymers
KW  - biorefineries
KW  - carbohydrate‐ based
KW  - monomers
KW  - green polymers
KW  - lignocellulosic biomass
Y1  - 2020
U6  - https://doi.org/10.1002/marc.202000485
SN  - 1022-1336
SN  - 1521-3927
VL  - 42
IS  - 3
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Hardy, John G.
A1  - Torres-Rendon, Jose Guillermo
A1  - Leal-Egana, Aldo
A1  - Walther, Andreas
A1  - Schlaad, Helmut
A1  - Coelfen, Helmut
A1  - Scheibel, Thomas R.
T1  - Biomineralization of Engineered Spider Silk Protein-Based Composite Materials for Bone Tissue Engineering
JF  - Materials
N2  - Materials based on biodegradable polyesters, such as poly(butylene terephthalate) (PBT) or poly(butylene terephthalate-co-poly(alkylene glycol) terephthalate) (PBTAT), have potential application as pro-regenerative scaffolds for bone tissue engineering. Herein, the preparation of films composed of PBT or PBTAT and an engineered spider silk protein, (eADF4(C16)), that displays multiple carboxylic acid moieties capable of binding calcium ions and facilitating their biomineralization with calcium carbonate or calcium phosphate is reported. Human mesenchymal stem cells cultured on films mineralized with calcium phosphate show enhanced levels of alkaline phosphatase activity suggesting that such composites have potential use for bone tissue engineering.
KW  - spider silk
KW  - recombinant protein
KW  - biodegradable polymers
KW  - biomaterials
KW  - biomineralization
KW  - bone tissue engineering
Y1  - 2016
U6  - https://doi.org/10.3390/ma9070560
SN  - 1996-1944
VL  - 9
SP  - 93
EP  - 108
PB  - MDPI
CY  - Basel
ER  - 
TY  - GEN
A1  - Hardy, John G.
A1  - Torres-Rendon, Jose Guillermo
A1  - Leal-Egaña, Aldo
A1  - Walther, Andreas
A1  - Schlaad, Helmut
A1  - Cölfen, Helmut
A1  - Scheibel, Thomas R.
T1  - Biomineralization of engineered spider silk protein-based composite materials for bone tissue engineering
N2  - Materials based on biodegradable polyesters, such as poly(butylene terephthalate) (PBT) or poly(butylene terephthalate-co-poly(alkylene glycol) terephthalate) (PBTAT), have potential application as pro-regenerative scaffolds for bone tissue engineering. Herein, the preparation of films composed of PBT or PBTAT and an engineered spider silk protein, (eADF4(C16)), that displays multiple carboxylic acid moieties capable of binding calcium ions and facilitating their biomineralization with calcium carbonate or calcium phosphate is reported. Human mesenchymal stem cells cultured on films mineralized with calcium phosphate show enhanced levels of alkaline phosphatase activity suggesting that such composites have potential use for bone tissue engineering.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 359 
KW  - spider silk
KW  - recombinant protein
KW  - biodegradable polymers
KW  - biomaterials
KW  - biomineralization
KW  - bone tissue engineering
Y1  - 2017
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-400519
ER  -