Determination of molecular weights and solubility parameters of high-polymers by gas chromatography

1976 ◽  
Vol 281 (2) ◽  
pp. 131-133 ◽  
Author(s):  
Kiyoteru Otozai ◽  
Itiro Tohyama
Keyword(s):  
Gas Chromatography ◽  
Solubility Parameters ◽  
Molecular Weights ◽  
High Polymers

New Absolute Molecular Weight Method—Linear High Polymers

1959 ◽  
Vol 32 (1) ◽  
pp. 97-98
Author(s):  
F. Bueche ◽  
S. W. Harding
Keyword(s):  
Molecular Weight ◽  
Shear Rate ◽  
Shear Viscosity ◽  
Rate Dependence ◽  
Zero Shear Viscosity ◽  
Molecular Weights ◽  
Weight Method ◽  
Shear Rate Dependence ◽  
High Polymers

Abstract It has been shown that the shear-rate dependence of the viscosity of concentrated polymer solutions can be explained in terms of known parameters of the solution. If the concentration, temperature, zero shear viscosity, and molecular weight of the polymer are known, the decrease in viscosity with increasing shear rate can be predicted. Conversely, if one measures the shear-rate dependence of the viscosity, the molecular weight may be computed. We believe this provides a convenient method for the absolute determination of molecular weights of linear, coiling, high polymers.

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