A NOTE ON THE VARIATION WITH TEMPERATURE OF THE INTRINSIC VISCOSITY OF GR-S IN BENZENE

1947 ◽  
Vol 25b (4) ◽  
pp. 351-356
Author(s):  
T. M. Rogers ◽  
D. A. Henderson ◽  
L. H. Cragg
Keyword(s):  
Intrinsic Viscosity ◽  
Kinematic Viscosity ◽  
Flow Time ◽  
Point Determination ◽  
The One

The intrinsic viscosity, [η], (as well as the intrinsic flow time, [t], and the intrinsic kinematic viscosity, [ν]) of normal GR-S in benzene has been shown to be independent of temperature, over the range 10° to 55 °C, within the experimental precision [Formula: see text]. In this range of temperatures, also, the functions [Formula: see text] and [Formula: see text] are independent of concentration (up to at least 0.3%), and may therefore be used in the one-point determination of [t] and [ν].

Single point determination of intrinsic viscosity

1963 ◽  
Vol 7 (4) ◽  
pp. S30-S31 ◽  
Author(s):  
R. Z. Naar ◽  
H. H. Zabusky ◽  
R. F. Heitmiller
Keyword(s):  
Intrinsic Viscosity ◽  
Single Point ◽  
Point Determination

The Terminology of Intrinsic Viscosity and Related Functions

1946 ◽  
Vol 19 (4) ◽  
pp. 1092-1098
Author(s):  
L. H. Cragg
Keyword(s):  
Intrinsic Viscosity ◽  
Kinematic Viscosity ◽  
Relative Viscosity ◽  
Flow Time ◽  
Inherent Viscosity ◽  
Routine Practice ◽  
Concentration Coefficient ◽  
Specific Viscosity ◽  
Reduced Viscosity ◽  
Relative Flow

Abstract The confusion existing in the use of symbols and names for Kraemer's “intrinsic viscosity” and other functions related to it is illustrated and deplored. The reasonable plea is made that one name be adopted for each function and that it be used with no other meaning. To stimulate discussion and ultimate action, the following names are proposed: “specific viscosity” for ηsp; “reduced viscosity” for ηsp/c, “inherent viscosity” for (ln ηr)/c; and “intrinsic viscosity” for [η], whether determined as “limiting reduced viscosity” limc→0 (ηsp/c), or as “limiting inherent viscosity” limc→0 (ηr/c), or as “limiting viscosity concentration coefficient” limc→0 (dηr/dc). Often, especially in routine practice, it is the relative kinematic viscosity νr, that is determined ; unless this is shown to be numerically equal to the relative viscosity ηr, the symbols and names of the derived functions should be modified accordingly: thus, (ln νr)/c inherent kinematic viscosity, [ν] intrinsic kinematic viscosity. Frequently, also, kinetic energy corrections are neglected; under these circumstances the suggested usage is tr, relative flow time, tsp/c reduced flow time, [t] intrinsic flow time, etc.

Single-point determination of intrinsic viscosity

1960 ◽  
Vol 4 (10) ◽  
pp. 92-94 ◽  
Author(s):  
R. J. Valles ◽  
M. C. Otzinger ◽  
D. W. Levi
Keyword(s):  
Intrinsic Viscosity ◽  
Single Point ◽  
Point Determination

Single point determination of intrinsic viscosity

1963 ◽  
Vol 7 (6) ◽  
pp. S30-S31 ◽  
Author(s):  
R. Z. Naar ◽  
H. H. Zabusky ◽  
R. F. Heitmiller
Keyword(s):  
Intrinsic Viscosity ◽  
Single Point ◽  
Point Determination
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