Fast Access to Amphiphilic Multiblock Architectures by the Anionic Copolymerization of Aziridines and Ethylene Oxide

2018 ◽  
Vol 140 (41) ◽  
pp. 13407-13412 ◽  
Author(s):  
Tassilo Gleede ◽  
Elisabeth Rieger ◽  
Jan Blankenburg ◽  
Katja Klein ◽  
Frederik R. Wurm
Keyword(s):  
Ethylene Oxide ◽  
Anionic Copolymerization ◽  
Fast Access

Reactivity ratios for the anionic copolymerization of ethylene oxide and butylene oxide in bulk

1993 ◽  
Vol 29 (2-3) ◽  
pp. 281-286 ◽  
Author(s):  
Stewart Dickson ◽  
Ga-Er Yu ◽  
Frank Heatley ◽  
Colin Booth
Keyword(s):  
Ethylene Oxide ◽  
Reactivity Ratios ◽  
Anionic Copolymerization

Anionic Copolymerization of Acrylonitrile with Methyl Acrylate under the Action of a Novel Initiating System Based on a Bicyclic Tertiary Amine and Ethylene Oxide

2020 ◽  
Vol 93 (7) ◽  
pp. 1009-1018
Author(s):  
A. E. Tarasov ◽  
A. A. Grishchuk ◽  
S. V. Karpov ◽  
Yu. V. Podval’naya ◽  
A. V. Chernyak ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Tertiary Amine ◽  
Methyl Acrylate ◽  
Anionic Copolymerization

Anionic Copolymerization of Acrylonitrile with Ethyl Acrylate under the Action of the Initiating System of 1,4-Diazabicyclo[2.2.2]Octane – Ethylene Oxide

2021 ◽  
Vol 899 ◽  
pp. 226-231
Author(s):  
Yulia V. Podvalnaya ◽  
Aleksandr E. Tarasov ◽  
Alexander A. Grishchuk ◽  
Dmitry A. Chernyayev ◽  
Elmira R. Badamshina
Keyword(s):  
Heat Treatment ◽  
Ethylene Oxide ◽  
Thermal Behavior ◽  
Thermal Effects ◽  
Initial Rate ◽  
Molar Fraction ◽  
Reaction Medium ◽  
Ethyl Acrylate ◽  
Branched Structure ◽  
Anionic Copolymerization

It was found, studying acrylonitrile copolymerization with ethyl acrylate in dimethyl sulfoxide under the action of anionic initiating system of 1,4-diazabicyclo [2.2.2] octane – ethylene oxide, that the obtained copolymers have a branched structure. An increase in the molar fraction of ethyl acrylate in the reaction medium leads to a decrease in the initial rate of acrylonitrile polymerization. Thermal behavior of copolymer samples was investigated; it was found that ethyl acrylate, being introduced into the polyacrylonitrile structure, both reduces thermal effects related to the reactions taking place during heat treatment of copolymers, and increases the half-width of the heat release peak.

“Clickable PEG” via anionic copolymerization of ethylene oxide and glycidyl propargyl ether

2017 ◽  
Vol 8 (12) ◽  
pp. 1882-1887 ◽  
Author(s):  
Jana Herzberger ◽  
Daniel Leibig ◽  
Jens Langhanki ◽  
Christian Moers ◽  
Till Opatz ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Ethylene Glycol ◽  
Subsequent Generation ◽  
Poly Ethylene Glycol ◽  
Propargyl Ether ◽  
One Step ◽  
Poly Ethylene ◽  
Anionic Copolymerization

First one-step synthesis of poly(ethylene glycol) bearing multiple alkyne-groups along the polyether backbone and subsequent generation of PEG-glycopolymers by CuAAC.

Determination of reactivity ratios for the anionic copolymerization of ethylene oxide and propylene oxide in bulk

1991 ◽  
Vol 27 (7) ◽  
pp. 573-579 ◽  
Author(s):  
Frank Heatley ◽  
Ga-er Yu ◽  
Colin Booth ◽  
Trevor G. Blease
Keyword(s):  
Ethylene Oxide ◽  
Propylene Oxide ◽  
Reactivity Ratios ◽  
Anionic Copolymerization

Anionic copolymerization reactions of ethylene oxide and propylene oxide

1971 ◽  
Vol 13 (3) ◽  
pp. 723-730 ◽  
Author(s):  
G.A. Gladkovskii ◽  
Ye.V. Ryzhenkova
Keyword(s):  
Ethylene Oxide ◽  
Propylene Oxide ◽  
Anionic Copolymerization

Preparation and properties of stat-copoly-(oxyethylene-oxypropylene)-block-poly (oxyethylene): 1. Use of crown ether in the anionic copolymerization of propylene oxide and ethylene oxide

Polymer ◽  
1992 ◽  
Vol 33 (9) ◽  
pp. 1959-1962 ◽  
Author(s):  
Yulin Deng ◽  
Jifeng Ding ◽  
Gaer Yu ◽  
Richard H. Mobbs ◽  
Frank Heatley ◽  
...  
Keyword(s):  
Crown Ether ◽  
Ethylene Oxide ◽  
Propylene Oxide ◽  
Anionic Copolymerization

The Structure of Radiation Cross-Linked Poly (ethylene oxide) Gels

1971 ◽  
Vol 29 ◽  
pp. 76-77
Author(s):  
C. E. Cluthe ◽  
G. G. Cocks
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Parallel Plate ◽  
Average Molecular Weight ◽  
Radical Reaction ◽  
Free Radical Reaction ◽  
Nitrogen Gas ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Initial Viscosity

Aqueous solutions of a 1 weight-per cent poly (ethylene oxide) (PEO) were degassed under vacuum, transferred to a parallel plate viscometer under a nitrogen gas blanket, and exposed to Co60 gamma radiation. The Co60 source was rated at 4000 curies, and the dose ratewas 3.8x105 rads/hr. The poly (ethylene oxide) employed in the irradiations had an initial viscosity average molecular weight of 2.1 x 106.The solutions were gelled by a free radical reaction with dosages ranging from 5x104 rads to 4.8x106 rads.

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