Zobrazeno 1 - 10
of 15
pro vyhledávání: '"J. C. Selser"'
Publikováno v:
Review of Scientific Instruments. 75:3216-3223
We demonstrate an experimental setup utilizing fiber-optic detection and coupling of scattered light into existing photon correlation spectroscopy (PCS) and Fabry–Perot (F–P) interferometry systems. The performance of the fiber coupled F–P as a
Publikováno v:
The Journal of Chemical Physics. 117:427-440
The “wet gel” model used earlier to describe the results of dynamic light scattering studies of neat poly(ethylene oxide) (PEO) melts has now been successfully applied to PEO-melt/LiClO4 solutions. The results of static light scattering and visco
Publikováno v:
Journal of Power Sources. 89:168-175
Earlier light scattering studies revealed that melts of the electrolyte polymer poly(ethylene oxide) (PEO) were not homogeneous but were instead structured and behaved as elastic PEO networks. We report the results of subsequent viscometry measuremen
Publikováno v:
The Journal of Chemical Physics. 109:11043-11050
Two slow, long-ranged relaxations in melts of poly(ethylene oxide) (PEO) were studied using the noninvasive dynamic light-scattering technique of photon correlation spectroscopy (PCS). Measurements were made for two PEO samples, one with a molecular
Publikováno v:
Macromolecules. 29:3956-3959
The interaction of lithium perchlorate with high molecular weight poly(ethylene oxide) (PEO) in dilute methanol solutions was studied using cloud point measurements, static and dynamic light scattering, and viscometry. For both good and poor solvent
Publikováno v:
Macromolecules. 25:5283-5286
Viacometry results, in conjunction with earlier light scattering data, revealed anomalously large values of the parameters Π=MA 2 /[η] and k s /[η] for dilute solutions of high molecular weight poly(ethylene oxide) (PEO) in water at 30°C. Taken t
Autor:
J. C. Selser, K. Devanand
Publikováno v:
Macromolecules. 24:5943-5947
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 28:2023-2056
The scattered intensity function S(q, c) and the intermediate scattering function S(q, c, τ) of poly-(α-methyl styrene) (Mω = 5.71 × 105, 1.17 × 106, and 2.96 × 106) in toluene in the dilute concentration region were measured as functions of co
Autor:
P. M. Cotts, J. C. Selser
Publikováno v:
Macromolecules. 23:2050-2057
Coil-coil interactions in dilute solution for ply-(α-methylstyrene) in sub-θ,θ, marginal, and good solvents were studied using static and dynamic light scattering. The behavior observed across the solvent quality range is well described by a semie
Publikováno v:
The Journal of chemical physics. 120(18)
The crossover behavior of 50 000 molar mass poly(ethylene oxide)/methanol solutions from dilute solution to the melt/gel was examined. At first this behavior was investigated without LiClO(4) and then reexamined with LiClO(4). To better understand th