Thermoresponsive hydrogels of hydrophobically modified polyglycidol

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Alicja Utrata-Wesołek ◽  
Barbara Trzebicka ◽  
Andrzej Dworak ◽  
Sijka Ivanova ◽  
Darinka Christova
Keyword(s):  
Molar Mass ◽  
Crosslinking Agent ◽  
Ethyl Carbamate ◽  
Coordination Polymerization ◽  
Swelling Properties ◽  
High Molar Mass ◽  
New Class ◽  
Ethyl Isocyanate ◽  
Poly Ethylene ◽  
Cyclic Changes

AbstractSynthesis, swelling properties and thermoresponsive behavior of a new class of hydrogels based on high molar mass polyglycidol are presented. High molar mass polyglycidol was synthesized by coordination polymerization. Thermosensitive poly(glycidol-co-glycidyl ethyl carbamate)s were obtained via a simple chemical modification of the polyglycidol with ethyl isocyanate. Polyglycidol and poly(glycidol-co-glycidyl ethyl carbamate)s were chemically crosslinked in DMF solution using oligomeric poly(ethylene glycol)-bis-(carboxymethyl ether chloride) as crosslinking agent. The hydrogels of degree of swelling of over 1000% were obtained. Thermoresponsive properties of the networks and the swellingdeswelling behavior of hydrogels in response to cyclic changes of the temperature were studied.

Synthesis, Characterization, and Gene Transfer Application of Poly(ethylene glycol-b-ethylenimine) with High Molar Mass Polyamine Block

2006 ◽  
Vol 7 (10) ◽  
pp. 2863-2870 ◽  
Author(s):  
B. Brissault ◽  
A. Kichler ◽  
C. Leborgne ◽  
O. Danos ◽  
H. Cheradame ◽  
...  
Keyword(s):  
Gene Transfer ◽  
Ethylene Glycol ◽  
Molar Mass ◽  
Poly Ethylene Glycol ◽  
High Molar Mass ◽  
Poly Ethylene

μPET imaging of the pharmacokinetic behavior of medium and high molar mass 89 Zr-labeled poly(2-ethyl-2-oxazoline) in comparison to poly(ethylene glycol)

2016 ◽  
Vol 235 ◽  
pp. 63-71 ◽  
Author(s):  
Leonie wyffels ◽  
Thomas Verbrugghen ◽  
Bryn D. Monnery ◽  
Mathias Glassner ◽  
Sigrid Stroobants ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Molar Mass ◽  
Poly Ethylene Glycol ◽  
High Molar Mass ◽  
Poly Ethylene ◽  
Pharmacokinetic Behavior

Degradation of high molar mass poly(ethylene glycol), poly(2-ethyl-2-oxazoline) and poly(vinyl pyrrolidone) by reactive oxygen species

2017 ◽  
Author(s):  
Robert Luxenhofer ◽  
Juliane Ulbricht ◽  
Moritz Faust
Keyword(s):  
Ethylene Glycol ◽  
Molar Mass ◽  
Gel Permeation Chromatography ◽  
Vinyl Pyrrolidone ◽  
Oxygen Species ◽  
Poly Ethylene Glycol ◽  
High Molar Mass ◽  
Poly Ethylene ◽  
Poly Vinyl Pyrrolidone ◽  
Apparent Molar Mass

The development of the apparent molar mass of different poly(ethylene glycol), poly(2-ethyl-2-oxazoline) and poly(vinyl pyrrolidone) upon incubation with hydrogen peroxide and different concentrations and catalytic amounts of CuSO4 was followed used gel permeation chromatography.

Degradation of high molar mass poly(ethylene glycol), poly(2-ethyl-2-oxazoline) and poly(vinyl pyrrolidone) by reactive oxygen species

2017 ◽  
Author(s):  
Robert Luxenhofer ◽  
Juliane Ulbricht ◽  
Moritz Faust
Keyword(s):  
Ethylene Glycol ◽  
Molar Mass ◽  
Gel Permeation Chromatography ◽  
Vinyl Pyrrolidone ◽  
Oxygen Species ◽  
Poly Ethylene Glycol ◽  
High Molar Mass ◽  
Poly Ethylene ◽  
Poly Vinyl Pyrrolidone ◽  
Apparent Molar Mass

The development of the apparent molar mass of different poly(ethylene glycol), poly(2-ethyl-2-oxazoline) and poly(vinyl pyrrolidone) upon incubation with hydrogen peroxide and different concentrations and catalytic amounts of CuSO4 was followed used gel permeation chromatography.

scholarly journals Using Triethylborane to Manipulate Reactivity Ratios in Epoxide-Anhydride Copolymerization: Application to the Synthesis of Polyethers with Degradable Ester Functions

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 466
Author(s):  
Vamshi K. Chidara ◽  
Yves Gnanou ◽  
Xiaoshuang Feng
Keyword(s):  
Ethylene Oxide ◽  
Ring Opening ◽  
Molar Mass ◽  
Reactivity Ratio ◽  
Reactivity Ratios ◽  
High Molar Mass ◽  
Alternating Copolymers ◽  
Poly Ethylene Oxide ◽  
Anionic Ring ◽  
Poly Ethylene

The anionic ring-opening copolymerization (ROCOP) of epoxides, namely of ethylene oxide (EO), with anhydrides (AH) generally produces strictly alternating copolymers. With triethylborane (TEB)-assisted ROCOP of EO with AH, statistical copolymers of high molar mass including ether and ester units could be obtained. In the presence of TEB, the reactivity ratio of EO (rEO), which is normally equal to 0 in its absence, could be progressively raised to values lower than 1 or higher than 1. Conditions were even found to obtain rEO equal or close to 1. Samples of P(EO-co-ester) with minimal compositional drift could be synthesized; upon basic degradation of their ester linkages, these samples afforded poly(ethylene oxide) (PEO) diol samples of narrow molar mass distribution. In other cases where rEO were lower or higher than 1, the PEO diol samples eventually isolated after degradation exhibited a broader distribution of molar masses because of the compositional drift of initial P(EO-co-ester) samples.

3rd generation poly(ethylene imine)s for gene delivery

2017 ◽  
Vol 5 (6) ◽  
pp. 1258-1274 ◽  
Author(s):  
Tanja Bus ◽  
Christoph Englert ◽  
Martin Reifarth ◽  
Philipp Borchers ◽  
Matthias Hartlieb ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Primary Amine ◽  
Molar Mass ◽  
Ethylene Imine ◽  
High Molar Mass ◽  
Poly Ethylene ◽  
New Generation

In this study, a series of high molar mass poly(2-oxazoline)-based copolymers was synthesized, introducing 2-ethyl-2-oxazoline, ethylene imine, and primary amine bearing monomer units representing a new generation of PEI.

Paper Chemistry: Interactions of thermo mechanical pulp fractions with high molar mass cationic polyacrylamides: Part 2. Flocculation

2010 ◽  
Vol 25 (3) ◽  
pp. 310-318 ◽  
Author(s):  
Tero Taipale ◽  
Janne Laine ◽  
Susanna Holappa ◽  
Jonni Ahlgren ◽  
Juan Cecchini
Keyword(s):  
Molar Mass ◽  
High Molar Mass ◽  
Mechanical Pulp ◽  
Paper Chemistry
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