57061
2020
2020
eng
13
3
postprint
1
2020-11-18
2020-11-18
--
New (and old) monomers from biorefineries to make polymer chemistry more sustainable
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.
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
10.25932/publishup-57061
urn:nbn:de:kobv:517-opus4-570614
1866-8372
33205563
outputup:dataSource:WoS:2021
2000485
WOS:000589951300001
Antonietti, M (corresponding author), Max Planck Inst Colloids & Interfaces, Dept Colloid Chem, Karl Liebknecht Str 24-25, D-14476 Potsdam, Germany., office.cc@mpikg.mpg.de
Max Planck SocietyMax Planck SocietyFoundation CELLEX; University of; Potsdam
Antonietti, Markus
2022-12-09T08:31:21+00:00
sword
importub
filename=package.tar
b48eaadddf34baa240142c844f963ba1
<a href="https://publishup.uni-potsdam.de/57060">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
Macromol. Rapid Commun. 2021, 42, 2000485. https://doi.org/10.1002/marc.202000485
Version of Record
CC-BY-NC-ND - Namensnennung, nicht kommerziell, keine Bearbeitungen 4.0 International
Majd Al-Naji
Helmut Schlaad
Markus Antonietti
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
1385
eng
uncontrolled
biodegradable polymers
eng
uncontrolled
biorefineries
eng
uncontrolled
carbohydrate‐ based
eng
uncontrolled
monomers
eng
uncontrolled
green polymers
eng
uncontrolled
lignocellulosic biomass
Chemie und zugeordnete Wissenschaften
open_access
Institut für Chemie
Referiert
Import
Green Open-Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/57061/zmnr1385.pdf
43646
2019
2019
eng
19271
19277
7
751
postprint
1
2019-10-11
2019-10-11
--
Temperature-triggered reversible breakdown of polymer-stabilized olive
A one-step moderate energy vibrational emulsification method was successfully employed to produce thermo-responsive olive/silicone-based Janus emulsions stabilized by poly(N,N-diethylacrylamide) carrying 0.7 mol% oleoyl side chains. Completely engulfed emulsion droplets remained stable at room temperature and could be destabilized on demand upon heating to the transition temperature of the polymeric stabilizer. Time-dependent light micrographs demonstrate the temperature-induced breakdown of the Janus droplets, which opens new aspects of application, for instance in biocatalysis.
Postprints der Universität Potsdam Mathematisch-Naturwissenschaftliche Reihe
silicone oil Janus emulsions
10.25932/publishup-43646
urn:nbn:de:kobv:517-opus4-436461
1866-8372
RSC Advances 9 (2019) 35, S. 19271–19277 DOI: 10.1039/c9ra03463c
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/43645">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
false
true
Rajarshi Roy Raju
Ferenc Liebig
Andreas Hess
Helmut Schlaad
Joachim Koetz
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
751
eng
uncontrolled
microgels
eng
uncontrolled
step
Chemie und zugeordnete Wissenschaften
open_access
Institut für Chemie
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/43646/pmnr751.pdf
40051
2017
2017
eng
13
postprint
1
--
2017-09-22
--
Biomineralization of engineered spider silk protein-based composite materials for bone tissue engineering
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.
urn:nbn:de:kobv:517-opus4-400519
online registration
Materials 9 (2016) Nr. 7. - DOI: 10.3390/ma9070560
560
CC-BY - Namensnennung 4.0 International
John G. Hardy
Jose Guillermo Torres-Rendon
Aldo Leal-Egaña
Andreas Walther
Helmut Schlaad
Helmut Cölfen
Thomas R. Scheibel
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
359
eng
uncontrolled
spider silk
eng
uncontrolled
recombinant protein
eng
uncontrolled
biodegradable polymers
eng
uncontrolled
biomaterials
eng
uncontrolled
biomineralization
eng
uncontrolled
bone tissue engineering
Technik, Technologie
open_access
Institut für Chemie
Referiert
Open Access
Multidisciplinary Digital Publishing Institute (MDPI)
Universität Potsdam
https://publishup.uni-potsdam.de/files/40051/pmnr359_online.pdf
39508
2016
2016
eng
4
postprint
1
--
2016-11-22
--
Metathesis polymerization of cystine-based macrocycles
Macrocycles based on L-cystine were synthesized by ring-closing metathesis (RCM) and subsequently polymerized by entropy-driven ring-opening metathesis polymerization (ED-ROMP). Monomer conversion reached ∼80% in equilibrium and the produced poly(ester-amine-disulfide-alkene)s exhibited apparent molar masses (Mappw) of up to 80 kDa and dispersities (Đ) of ∼2. The polymers can be further functionalized with acid anhydrides and degraded by reductive cleavage of the main-chain disulfide.
urn:nbn:de:kobv:517-opus4-395080
online registration
Polym. Chem. (2017) Nr. 8, S. 366-369. - DOI: 10.1039/C6PY01864E
Au-028172
<a href="http://publishup.uni-potsdam.de/55496">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
Felix Nicolas Behrendt
Helmut Schlaad
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
329
Chemie und zugeordnete Wissenschaften
open_access
Institut für Chemie
Referiert
Open Access
RSC
Universität Potsdam
https://publishup.uni-potsdam.de/files/39508/pmnr329_online.pdf
39502
2016
2016
eng
17
postprint
1
--
2016-09-05
--
Thermoresponsive poly(2-oxazoline)s, polypeptoids, and polypeptides
This review covers the recent advances in the emerging field of thermoresponsive polyamides or polymeric amides, i.e., poly(2-oxazoline)s, polypeptoids, and polypeptides, with a specific focus on structure–thermoresponsive property relationships, self-assembly, and applications.
urn:nbn:de:kobv:517-opus4-395022
online registration
Polym. Chem. (2017) Nr. 8, S. 24-40. - DOI: 10.1039/C6PY01320A
Au-028173
<a href="http://publishup.uni-potsdam.de/55524">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
Richard Hoogenboom
Helmut Schlaad
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
328
Chemie und zugeordnete Wissenschaften
open_access
Institut für Chemie
Referiert
Open Access
RSC
Universität Potsdam
https://publishup.uni-potsdam.de/files/39502/pmnr328_online.pdf
10271
2015
2015
eng
15645
15648
postprint
1
--
2015-09-07
--
Primary ammonium/tertiary amine-mediated controlled ring opening polymerisation of amino acid N-carboxyanhydrides
Stable commercial primary ammonium chlorides were combined with tertiary amines to initiate the controlled ring opening polymerisation of amino acid N-carboxyanhydrides to yield polypeptides with defined end group structure, predetermined molar mass and narrow molar mass distribution.
urn:nbn:de:kobv:517-opus4-102718
online registration
Chem. Commun. (2015) Nr. 51, S. 15645-15648. - DOI: 10.1039/C5CC06905J
Keine öffentliche Lizenz: Unter Urheberrechtsschutz
Charlotte D. Vacogne
Helmut Schlaad
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
307
Chemie und zugeordnete Wissenschaften
open_access
Institut für Chemie
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/10271/pmnr307_online.pdf
10228
2015
2015
eng
5040
5052
13
postprint
1
--
2015-05-12
--
Fibrillar gels via the self-assembly of poly(L-glutamate)-based statistical copolymers
Polypeptides having secondary structures often undergo self-assembly which can extend over multiple length scales. Poly(γ-benzyl-L-glutamate) (PBLG), for example, folds into α-helices and forms physical organogels, whereas poly(L-glutamic acid) (PLGA at acidic pH) or poly(L-glutamate) (PLG at neutral/basic pH) do not form hydrogels. We explored the gelation of modified PBLG and investigated the deprotection of the carboxylic acid moieties in such gels to yield unique hydrogels. This was accomplished through photo-crosslinking gelation of poly(γ-benzyl-L-glutamate-co-allylglycine) statistical copolymers in toluene, tetrahydrofuran, and 1,4-dioxane. Unlike most polymer-based chemical gels, our gels were prepared from dilute solutions (<20 g L−1, i.e., <2% w/v) of low molar mass polymers. Despite such low concentrations and molar masses, our dioxane gels showed high mechanical stability and little shrinkage; remarkably, they also exhibited a porous fibrillar network. Deprotection of the carboxylic acid moieties in dioxane gels yielded pH responsive and highly absorbent PLGA/PLG-based hydrogels (swelling ratio of up to 87), while preserving the network structure, which is an unprecedented feature in the context of crosslinked PLGA gels. These outstanding properties are highly attractive for biomedical materials.
urn:nbn:de:kobv:517-opus4-102289
online registration
Polym. Chem. (2015) Nr. 6, S. 5040-5042. - DOI: 10.1039/C5PY00491H
Keine öffentliche Lizenz: Unter Urheberrechtsschutz
Charlotte D. Vacogne
Sarah M. Brosnan
Admir Masic
Helmut Schlaad
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
301
Chemie und zugeordnete Wissenschaften
open_access
Institut für Chemie
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/10228/pmnr301_online.pdf
9585
2016
2016
eng
3067
3070
postprint
1
--
2016-04-08
--
Synthesis of polysarcosine from air and moisture stable N-phenoxycarbonyl-N-methylglycine assisted by tertiary amine base
Polysarcosine (Mn = 3650–20 000 g mol−1, Đ ∼ 1.1) was synthesized from the air and moisture stable N-phenoxycarbonyl-N-methylglycine. Polymerization was achieved by in situ transformation of the urethane precursor into the corresponding N-methylglycine-N-carboxyanhydride, when in the presence of a non-nucleophilic tertiary amine base and a primary amine initiator.
urn:nbn:de:kobv:517-opus4-95852
online registration
Au-032778
Polym. Chem. (2016), Nr. 8, S. 3067-3070. DOI: 10.1039/C6PY00221H
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/9584">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
Keine öffentliche Lizenz: Unter Urheberrechtsschutz
Afroditi Doriti
Sarah M. Brosnan
Steffen M. Weidner
Helmut Schlaad
Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
255
eng
uncontrolled
acids
eng
uncontrolled
activated urethane derivatives
eng
uncontrolled
carboxyanhydrides
eng
uncontrolled
copolymers
eng
uncontrolled
phosgene-free synthesis
eng
uncontrolled
polypeptides
eng
uncontrolled
ring-opening polymerization
Chemie und zugeordnete Wissenschaften
open_access
Institut für Chemie
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/9585/pmnr255_online.pdf
195
2005
eng
habilitation
1
2005-02-21
--
2005-01-06
Polymer self-assembly : adding complexity to mesostructures of diblock copolymers by specific interactions
In dieser Arbeit wurde die Rolle selektiver, nicht-kovalenter Wechselwirkungen bei der Selbstorganisation von Diblockcopolymeren untersucht. Durch Einführung elektrostatischer, dipolarer Wechselwirkungen oder Wasserstoffbrückenbindungen sollte es gelingen, komplexe Mesostrukturen zu erzeugen und die Ordnung vom Nanometerbereich auf größere Längenskalen auszuweiten. Diese Arbeit ist im Rahmen von Biomimetik zu sehen, da sie Konzepte der synthetischen Polymer- und Kolloidchemie und Grundprinzipien der Strukturbildung in supramolekularen und biologischen Systemen verbindet. Folgende Copolymersysteme wurden untersucht: (i) Blockionomere, (ii) Blockcopolymere mit chelatisierenden Acetoacetoxyeinheiten und (iii) Polypeptid-Blockcopolymere.
In this work, the basic principles of self-organization of diblock copolymers having the in¬herent property of selective or specific non-covalent binding were examined. By the introduction of electrostatic, dipole–dipole, or hydrogen bonding interactions, it was hoped to add complexity to the self-assembled mesostructures and to extend the level of ordering from the nanometer to a larger length scale. This work may be seen in the framework of biomimetics, as it combines features of synthetic polymer and colloid chemistry with basic concepts of structure formation applying in supramolecular and biological systems. The copolymer systems under study were (i) block ionomers, (ii) block copolymers with acetoacetoxy chelating units, and (iii) polypeptide block copolymers.
Polymer self-assembly : adding complexity to mesostructures of diblock copolymers by specific interactions
urn:nbn:de:kobv:517-0001824
207
VE 5070
-
Helmut Schlaad
deu
uncontrolled
block copolymer
deu
uncontrolled
polypeptide
deu
uncontrolled
controlled polymerization
deu
uncontrolled
self-assembly
deu
uncontrolled
specific interactions
deu
uncontrolled
micelle
deu
uncontrolled
vesicle
deu
uncontrolled
solid-state structure
deu
uncontrolled
colloids
eng
uncontrolled
Blockcopolymer
eng
uncontrolled
Polypeptid
eng
uncontrolled
kontrollierte Polymerisation
eng
uncontrolled
Selbstorganisation
eng
uncontrolled
spezifische Wechselwirkungen
eng
uncontrolled
Mizelle
eng
uncontrolled
Vesikel
eng
uncontrolled
Festkörperstruktur
eng
uncontrolled
Kol
Chemie und zugeordnete Wissenschaften
open_access
Institut für Chemie
Universität Potsdam
https://publishup.uni-potsdam.de/files/195/SCHLAAD.PDF