1982
DOI: 10.1002/pol.1982.180200513
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Moderately concentrated solutions of polystyrene. I. Viscosity as a function of concentration, temperature, and molecular weight

Abstract: SynopsisData on the viscosity 7 of moderately concentrated solutions of polystyrene are reported. Several solvents were investigated, including cyclopentane solutions over a temperature span between 8 u = 19.5OC and 8 L = 154.5"C. The data were analyzed in terms of a relation giving 7 as a function of a$cpM, where a+, is the expansion factor for the chain dimensions in a solution with volume fraction cp of polymer with molecular weight M. It is shown that values of ap so determined decrease as d lna,/d lncp = … Show more

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Cited by 55 publications
(30 citation statements)
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“…This degree can be expressed in terms of the Berry number B e , which is defined as the dimensionless product of the intrinsic viscosity [η] and the concentration c [22]:…”
Section: Discussionmentioning
confidence: 99%
“…This degree can be expressed in terms of the Berry number B e , which is defined as the dimensionless product of the intrinsic viscosity [η] and the concentration c [22]:…”
Section: Discussionmentioning
confidence: 99%
“…We found that the multiplication of the intrinsic viscosity with the concentration of polymer solution (Berry number [16]) is an important factor for electrospinning. Figure 9 shows the relationship between the Berry number and the diameter of the fiber obtained by electrospinning.…”
Section: Sbs (Polystyrene-polybutadiene Alloy Elasotmer Tr2000)mentioning
confidence: 99%
“…Entanglements set in a t [TIC > l. 25 Calculations showed that all runs reported on here remained well below the entanglement regi01-1. '~ Also, at these low polymer concentrations, we can be fairly certain that the propagation reaction is not diffusion limited.…”
Section: Methodsmentioning
confidence: 79%