Synthesis of Poly[(ethylene carbonate)-co-(ethylene oxide)] Copolymer by Phosphazene-Catalyzed ROP

2011 ◽  
Vol 212 (23) ◽  
pp. 2589-2593 ◽  
Author(s):  
Hongjun Yang ◽  
Manqing Yan ◽  
Stergios Pispas ◽  
Guangzhao Zhang
Keyword(s):  
Ethylene Oxide ◽  
Ethylene Carbonate ◽  
Poly Ethylene

Functional PEG building blocks via copolymerization of ethylene carbonate and tert-butyl glycidyl ether

2016 ◽  
Vol 7 (31) ◽  
pp. 5050-5059 ◽  
Author(s):  
G. Kapiti ◽  
H. Keul ◽  
M. Möller
Keyword(s):  
Ethylene Oxide ◽  
Ethylene Glycol ◽  
Ethylene Carbonate ◽  
Glycidyl Ether ◽  
Building Blocks ◽  
Poly Ethylene Glycol ◽  
Tert Butyl ◽  
Poly Ethylene ◽  
Butyl Glycidyl Ether

Functional poly(ethylene glycol) building blocks were synthesized with ethylene carbonate as a new source for ethylene oxide repeating units.

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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