The kinetic and stereochemical effects of low molecular weight ions during the radical polymerization of methacrylic acid and its salts in aqueous solutions

1972 ◽  
Vol 14 (1) ◽  
pp. 131-146 ◽  
Author(s):  
V.G. Popov ◽  
D.A. Topchiev ◽  
V.A. Kabanov ◽  
V.A. Kargin
Keyword(s):  
Molecular Weight ◽  
Aqueous Solutions ◽  
Radical Polymerization ◽  
Methacrylic Acid ◽  
Low Molecular Weight

Tertiary amine catalyzed photo-induced controlled radical polymerization of methacrylates

2015 ◽  
Vol 6 (30) ◽  
pp. 5362-5368 ◽  
Author(s):  
Qiang Fu ◽  
Thomas G. McKenzie ◽  
Shereen Tan ◽  
Eunhyung Nam ◽  
Greg G. Qiao
Keyword(s):  
Molecular Weight ◽  
Radical Polymerization ◽  
Uv Irradiation ◽  
Tertiary Amine ◽  
Controlled Radical Polymerization ◽  
Low Molecular Weight ◽  
Molecular Weight Distributions ◽  
Weight Distributions ◽  
End Group

A novel tertiary amine catalyst and trithiocarbonate synergistic photo-induced controlled radical polymerization of methacrylates has been realized under mild UV irradiation, yielding polymethacrylates with low molecular weight distributions and excellent end-group fidelity.

The aqueous chemistry of tellurium: critically-selected equilibrium constants for the low-molecular-weight inorganic species

2019 ◽  
Vol 16 (4) ◽  
pp. 289 ◽  
Author(s):  
Montserrat Filella ◽  
Peter M. May
Keyword(s):  
Molecular Weight ◽  
Aqueous Solutions ◽  
Thermodynamic Data ◽  
Equilibrium Constants ◽  
Computer Programs ◽  
Experimental Investigations ◽  
Low Molecular Weight ◽  
Aqueous Chemistry ◽  
Scientific Disciplines ◽  
Inorganic Species

Environmental contextEquilibrium constants are required in many scientific disciplines such as biology, medicine, engineering, and in particular chemistry. Lack of reliable equilibrium constants for tellurium has restricted our understanding of its speciation and behaviour in the environment. This study presents a reliable set of equilibrium constants for tellurium, thereby providing a more coherent basis for future experimental investigations of the geochemistry, biochemistry and toxicology of this element. AbstractRelatively little information is available in the literature regarding the speciation and solubility of tellurium in aqueous solutions. The available thermodynamic data have been critically evaluated and entered into a thermodynamic database. The Joint Expert Speciation System suite of computer programs has been used to achieve thermodynamic consistency and provide a critically-selected set of equilibrium constants that can later be used for modelling purposes.

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