Poly(ethylene glycol)-Grafted Liposomes with Oligopeptide or Oligosaccharide Ligands Appended to the Termini of the Polymer Chains

1997 ◽  
Vol 8 (2) ◽  
pp. 111-118 ◽  
Author(s):  
Samuel Zalipsky ◽  
Nasreen Mullah ◽  
Jennifer A. Harding ◽  
Joshua Gittelman ◽  
Luke Guo ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Polymer Chains ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

scholarly journals Surfactant-free emulsion polymerization of vinylidene fluoride mediated by RAFT/MADIX reactive poly(ethylene glycol) polymer chains

2021 ◽  
Author(s):  
Mathieu Fuentes Exposito ◽  
Sébastien Norsic ◽  
Thibaut Février ◽  
Pierre-Yves Dugas ◽  
Salima Boutti ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Emulsion Polymerization ◽  
Vinylidene Fluoride ◽  
Polymer Chains ◽  
Poly Ethylene Glycol ◽  
Poly Vinylidene Fluoride ◽  
Emulsion Polymerizations ◽  
Poly Ethylene

A robust and straightforward synthesis of surfactant-free poly(vinylidene fluoride) (PVDF) latexes is presented using RAFT/MADIX-mediated emulsion polymerization. VDF emulsion polymerizations were conducted in the presence of commercial poly(ethylene glycol) chains...

Semipermeable poly(ethylene glycol) films: the relationship between permeability and molecular structure of polymer chains

Soft Matter ◽  
2009 ◽  
Vol 5 (21) ◽  
pp. 4104 ◽  
Author(s):  
Robert Schlapak ◽  
Daren Caruana ◽  
David Armitage ◽  
Stefan Howorka
Keyword(s):  
Molecular Structure ◽  
Ethylene Glycol ◽  
Polymer Chains ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene ◽  
The Relationship

scholarly journals Photocontrolled Radical Polymerization from Hydridic C–H Bonds

2019 ◽  
Author(s):  
Erin Stache ◽  
Veronika Kottisch ◽  
Brett Fors
Keyword(s):  
Hydrogen Atom ◽  
Ethylene Glycol ◽  
Polymer Chains ◽  
Hydrogen Atom Abstraction ◽  
Graft Polymer ◽  
Poly Ethylene Glycol ◽  
Controlled Polymerization ◽  
Poly Ethylene ◽  
Grafting From ◽  
Powerful Strategy

<p>Given the ubiquity of C–H bonds in biomolecules and polymer backbones, the development of a photocontrolled polymerization from a C–H bond would represent a powerful strategy for selective polymer conjugation precluding several synthetic steps to introduce complex functionality. We have developed a hydrogen-atom abstraction strategy that allows for a controlled polymerization from a C­–H bond using a benzophenone photocatalyst, a trithiocarbonate-derived disulfide, and visible light. We perform the polymerization from a variety of ethers, alkanes, unactivated C–H bonds, and alcohols as well as showcase the applicability of the method to several monomer classes. Our method lends itself to photocontrol which has important implications for building advanced macromolecular architectures. Finally, we demonstrate that we can graft polymer chains controllably from poly(ethylene glycol) showcasing the potential application of this method for controlled grafting from C–H bonds of commodity polymers.</p>

scholarly journals Photocontrolled Radical Polymerization from Hydridic C–H Bonds

2019 ◽  
Author(s):  
Erin Stache ◽  
Veronika Kottisch ◽  
Brett Fors
Keyword(s):  
Hydrogen Atom ◽  
Ethylene Glycol ◽  
Polymer Chains ◽  
Hydrogen Atom Abstraction ◽  
Graft Polymer ◽  
Poly Ethylene Glycol ◽  
Controlled Polymerization ◽  
Poly Ethylene ◽  
Grafting From ◽  
Powerful Strategy

<p>Given the ubiquity of C–H bonds in biomolecules and polymer backbones, the development of a photocontrolled polymerization from a C–H bond would represent a powerful strategy for selective polymer conjugation precluding several synthetic steps to introduce complex functionality. We have developed a hydrogen-atom abstraction strategy that allows for a controlled polymerization from a C­–H bond using a benzophenone photocatalyst, a trithiocarbonate-derived disulfide, and visible light. We perform the polymerization from a variety of ethers, alkanes, unactivated C–H bonds, and alcohols as well as showcase the applicability of the method to several monomer classes. Our method lends itself to photocontrol which has important implications for building advanced macromolecular architectures. Finally, we demonstrate that we can graft polymer chains controllably from poly(ethylene glycol) showcasing the potential application of this method for controlled grafting from C–H bonds of commodity polymers.</p>

scholarly journals Neutron investigation of interaction between anionic surfactant micelles and poly (ethylene glycol) polymer brush system

2021 ◽  
Vol 22 (2) ◽  
pp. 149-156
Author(s):  
O.P. Artykulnyi ◽  
◽  
M.M. Avdeev ◽  
Ye.M. Kosiachkin ◽  
V.I. Petrenko ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Anionic Surfactant ◽  
Structural Changes ◽  
Polymer Brush ◽  
Polymer Chains ◽  
Polymer Micelle ◽  
Poly Ethylene Glycol ◽  
Molecular Weights ◽  
Wide Range ◽  
Poly Ethylene

A polymer brush system of a neutral polymer poly (ethylene glycol) with a molecular weight of Mw = 20 kDa on silicon substrates in an aqueous medium was studied by the specular neutron reflectometry. Structural changes in the density profile of a polymer brush caused by the interaction of polymer chains with micelles of the anionic surfactant dodecylbenzenesulfonate acid were observed. The effect is shown to be related to the formation of molecular polymer-micelle associates in the bulk of the solution, which was previously studied by small-angle neutron scattering in a wide range of surfactant concentrations at various molecular weights of the polymer. The density of the dry polymer layer on the silicon substrate was additionally characterized by X-ray reflectometry and scanning atomic force microscopy.

Thermodynamic study of poly(ethylene glycol) in water/acetone solutions by viscometry

2011 ◽  
Vol 31 (5) ◽  
Author(s):  
Abbas Mehrdad ◽  
Mohammad Taghi Taghizadeh ◽  
Roghieh Moladoust
Keyword(s):  
Ethylene Glycol ◽  
Polymer Chains ◽  
Viscosity Data ◽  
Poly Ethylene Glycol ◽  
Solvent Interaction ◽  
Solvent Interactions ◽  
Volume Fractions ◽  
Poly Ethylene ◽  
Increasing Temperature ◽  
Mixed Water

Abstract In this work, the intrinsic viscosities of poly(ethylene glycol) (PEG) with a molar mass of 20,000 g·mol-1 were measured in water/acetone solutions from (283.1 to 313.1) K. The expansion factors of the polymer chains were calculated from the intrinsic viscosity data. The thermodynamic para­meters (entropy of dilution parameter, the heat of dilution para­meter, θ temperature, polymer-solvent interaction parameter and second osmotic virial coefficient) were derived by the temperature dependence of the polymer chain expansion factor. The thermodynamic parameters indicate that mixtures of water/acetone are changed to the poorer solvents for PEG, by increasing temperature and volume fractions of acetone. Also, the temperature dependency of segment-segment and segment-solvent interactions for PEG in mixed water/acetone, is decreased by increasing volume fractions of acetone.

Poly(ethylene glycol)-Conjugated Anti-EGF Receptor Antibody C225 with Radiometal Chelator Attached to the Termini of Polymer Chains

2001 ◽  
Vol 12 (4) ◽  
pp. 545-553 ◽  
Author(s):  
Xiaoxia Wen ◽  
Qing-Ping Wu ◽  
Yang Lu ◽  
Zhen Fan ◽  
Chusilp Charnsangavej ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Egf Receptor ◽  
Polymer Chains ◽  
Poly Ethylene Glycol ◽  
Receptor Antibody ◽  
Poly Ethylene

PIEZOELECTRIC PROPERTIES OF POLY(3-HYDROXYBUTYRATE-CO-3-HEDROXYBUTYRATE)-CO-POLY(ETHYLENE GLYCOL) PRODUCED BY CONTROLLED MICROBIOLOGICAL BIOSYNTHESIS

2019 ◽  
Vol 10 (10) ◽  
Author(s):  
Anton Bonartsev ◽  
Vera Voinova ◽  
Elizaveta Akoulina ◽  
Andrey Dudun ◽  
Irina Zharkova ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Piezoelectric Properties ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Thermosensitives hydrogels based on poly (ethylene glycol): I. Synthesis, characterization and release

2007 ◽  
Vol 32 (5) ◽  
pp. 431-446 ◽  
Author(s):  
Tahar Bartil ◽  
Mahmoud Bounekhel ◽  
Cedric Calberg ◽  
Robert Jerome
Keyword(s):  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene
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