Polymer translational diffusion: 1. Dilute theta solutions, polystyrene in cyclohexane

King, Terence A.; Knox, A.; Lee, W.I; McAdam, J.D.G.

doi:10.1016/0032-3861(73)90108-0

Cited by 85 publications

(23 citation statements)

References 18 publications

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“…The (34) systems for this comparison. The diffusivity of polystyrene in cyclohexane is calculated as 3 x cm2/s at 35"C, based on the work by King et al (1973). The solvent diffusivity of cyclohexane in polystryene was not known.…”

Section: Experimental Validation Of the Modelmentioning

confidence: 99%

Convective diffusion from a dissolving polymeric particle

Ranade¹,

Mashelkar²

1995

AIChE Journal

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Section: Experimental Validation Of the Modelmentioning

confidence: 99%

Convective diffusion from a dissolving polymeric particle

Ranade¹,

Mashelkar²

1995

AIChE Journal

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“…[ q ] = 3.36 X 10-zM,0*670 (mL g-') (13) A comparison of the exponents of eqs 3,12, and 13 again suggests only a marginal change in solvent quality on going from 50 to 5 "C. Earlier work with the PS/n-butyl chloride [s] = 2.65 X 10-2Mw0.694 (mL g-') moderate solvent system also noted only a very weak dependence of size on t e m p e r a t~r e .~~ This aspect of the behavior of these polymer/moderate solvent systems is not seen in other "moderate" systems such as PS in cyclohexane or decalin above the 8 temperature. 26 In summary, the power law exponents for the dependence of various measures of polymer size as a function of molecular weight are intermediate between those reported in good and 8 solvents.…”

Section: ( 5 )mentioning

confidence: 99%

Hydrodynamic and thermodynamic properties of poly(α-methylstyrene) in dilute n-butyl chloride solution

Mays¹,

Nan²,

Lewis³

1991

Macromolecules

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Solution properties of near-monodisperse poly(a-methylstyrene) chains in the moderate solvent n-butyl chloride were investigated by a combination of static and dynamic light scattering and intrinsic viscosity measurements. These data allow the determination of the radii of gyration (Ro) as well as equivalent sphere radii: the hydrodynamic radius (RH), the viscometric radius (Rv), and the thermodynamic radius (RT) (defined below). Ratios of these various radii allow a comparison between solution properties of poly(amethylstyrene) in n-butyl chloride and those of other polymer/solvent systems, as well as with theoretical predictions. Whereas RG/RH values are intermediate, as expected, between those normally found in good solvents or at the 8 state, the average value of Rv/RH = 1.186 is substantially larger than that commonly found for other chains in solvents of varying thermodynamic quality. Unusually large values of Rv/RH were also recently reported for the related system, polystyreneln-butyl chloride. Such a dependence of RvIRH on solvent quality (larger values in thermodynamically moderate solvents) has not been previously noted or predicted by theory.

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“…Most Qels measurements so far Eave been carried out with polystyrene (16)(17)(18)(19)(20)(21)(22). In the 676 Colloid and Polymer Science, !Iol.…”

Section: Introductionmentioning

confidence: 99%

Quasi-elastic light scattering from polymethylmethacrylate in a good and a theta solvent

Meer

Burchard

Wunderlich

1980

Colloid & Polymer Sci

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Polymer translational diffusion: 1. Dilute theta solutions, polystyrene in cyclohexane

Cited by 85 publications

References 18 publications

Convective diffusion from a dissolving polymeric particle

Convective diffusion from a dissolving polymeric particle

Hydrodynamic and thermodynamic properties of poly(α-methylstyrene) in dilute n-butyl chloride solution

Quasi-elastic light scattering from polymethylmethacrylate in a good and a theta solvent

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