1958
DOI: 10.1021/ja01543a006
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Molecular Dimensions and Interactions of Long-chain Polyphosphates in Sodium Bromide Solutions1

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Cited by 65 publications
(16 citation statements)
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“…From our experiments (Table II) we have obtained for our system in theta conditions (3.1 M KCI at 25°C) (3 = 2.0 X 10 6 and for conditions away from theta (0.5 M KCI at 25°C) (3 2.1 X 10 6 for (3. These values of (3 are lower than the values (2.5 -2.7 X 10 6 ) expected for nonelectrolyte random coils.…”
Section: S[llp/3 1lon Avmentioning
confidence: 98%
See 1 more Smart Citation
“…From our experiments (Table II) we have obtained for our system in theta conditions (3.1 M KCI at 25°C) (3 = 2.0 X 10 6 and for conditions away from theta (0.5 M KCI at 25°C) (3 2.1 X 10 6 for (3. These values of (3 are lower than the values (2.5 -2.7 X 10 6 ) expected for nonelectrolyte random coils.…”
Section: S[llp/3 1lon Avmentioning
confidence: 98%
“…Consequently, the intra-and intermolecular long-range interactions are responsible for many thermodynamic and hydrodynamic properties of polyelectrolyte chains. With increasing concentrations of simple salt, the excluded volume .in polyelectrolyte solutions may be strongly diminished and even vanish under suitable conditions [3,4]. Extensive studies have been undertaken in the investigation of excluded volume properties of non-ionic polymer systems (5] by viscosity, light-scattering and ultracentrifugation; however, there have been fewer excluded volume studies of polyelectrolyte systems (6)(7)(8) .…”
Section: Introductionmentioning
confidence: 99%
“…After 90 min, the resin was removed by centrifugation and this process was repeated twice, with fresh resin added at a 1:1.5 ratio of KPO 3 to resin. The final PP solution was vacuum filtered and freeze‐dried for 48 h. The degree of polymerization was measured by viscosity in triplicate and found to be 9200 ± 2300 …”
Section: Methodsmentioning
confidence: 99%
“…[27] and Ref. [32] for more details). In our case it was not possible to determine if3 only by density measurements as will be explained in the last part of this work; for this reason we preferred to determine A 2 b from the known molecular weight and the measured intensity at zero angle (Eq.…”
Section: Nm-~)mentioning
confidence: 99%