The use of sodium salts as nucleation agents for polyethylene terephthalate with minimal molecular weight reduction

1995 ◽  
Vol 35 (17) ◽  
pp. 1407-1412 ◽  
Author(s):  
J. W. Gilmer ◽  
R. P. Neu ◽  
Y. J. Liu ◽  
Alex K.-Y. Jen
Keyword(s):  
Molecular Weight ◽  
Polyethylene Terephthalate ◽  
Weight Reduction ◽  
Sodium Salts ◽  
Nucleation Agents ◽  
Minimal Molecular Weight

scholarly journals COMPLEXATION OF POLYETHYLENE-GLYCOL WITH THE SODIUM SALTS OF CITRIC AND SUCCINIC ACIDS IN THE AQUEOUS SOLUTIONS. STUDIES BY DYNAMIC LIGHT SCATTERING AND UV/VIS SPECTROPHOTOMETRY

2015 ◽  
Vol 11 (8) ◽  
pp. 3866-3872
Author(s):  
E.A. Masimov ◽  
Etibar Hummat Ismailov ◽  
S.Y. Odzhaqverdiyeva
Keyword(s):  
Molecular Weight ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Aqueous Solutions ◽  
Polyethylene Glycols ◽  
Hydrodynamic Diameter ◽  
Absorption Bands ◽  
Sodium Salts ◽  
And Diffusion ◽  
Formation Of Complexes

Dynamic light scattering (DLS) method in combination with the UV/VIS spectrophotometry is used to study the interaction of polyethylene- glycols with a molecular weight  6000 ( PEG6000 ) with sodium salts of citric and succinic acids in aqueous solutions. The values of density, viscosity, refractive and diffusion indexes, the values of the hydrodynamic diameter, wavelength electronic absorption bands for PEG6000 aqueous solutions, their mixtures with succinic and citric acids are determined. It was shown that depending on the composition of the solutions the values of hydrodynamic diameter for aqueous solutions containing 1-5 wt.% PEG6000 and their mixtures with succinic and citric acids (~ 1 wt%) ranges from 3.6 to 5.2 nm. It is assumed that the formation of complexes with the sizes  that are within the above range is due to the features of interaction  and the structure of the complexes formed in solution.

Solid-phase polycondensation for producing polyethylene terephthalate with a high molecular weight

1974 ◽  
Vol 5 (5) ◽  
pp. 493-495
Author(s):  
M. I. Simonova ◽  
E. M. Aizenshtein ◽  
V. V. Shevchenko
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Polyethylene Terephthalate ◽  
Solid Phase
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