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Rheologica Acta, 2016
This work aims to study flows within a wedge at the inclination angles in the 5°–20° range. Flow within a wedge occurs when a Carbopol solution is pulled horizontally by a moving conveyer belt through the wedge apex opening at different speeds. The upper side of the wedge is fixed at the exit by a pivot joint about which it could rotate.
David D. Pelot +2 more
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This work aims to study flows within a wedge at the inclination angles in the 5°–20° range. Flow within a wedge occurs when a Carbopol solution is pulled horizontally by a moving conveyer belt through the wedge apex opening at different speeds. The upper side of the wedge is fixed at the exit by a pivot joint about which it could rotate.
David D. Pelot +2 more
openaire +1 more source
Signatures of Overaging in an Aqueous Dispersion of Carbopol
Langmuir, 2020In this work, we study the effect of the deformation field on the physical aging behavior of an aqueous Carbopol dispersion. It is composed of soft swollen particles of gel that get deformed and acquire a polygonal shape, with flat interfaces rendering the dispersion a soft solid-like consistency as filled volume fraction approaches unity.
Mayank Agarwal +2 more
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Pharmaceutical Uses of Carbopol® 934*
Journal of the American Pharmaceutical Association (Scientific ed.), 1956Abstract This study indicates that a variety of materials can be suspended in Carbopolm solutions at varying pH values. In most instances, however, polyvalent metal ions are incompatible and are poorly suspended. Results of experiments on the emulsifying characteristics of Carbopol@ solutions are also recorded.
B, MISEK +3 more
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Scaling and Mesostructure of Carbopol Dispersions
Rheologica Acta, 2012Rheological measurements were performed on aqueous dispersions of two commercial crosslinked polymer microgels, Carbopol Ultrez 10 and Carbopol ETD 2050, prepared over a wide range of concentration and pH. For all concentrations studied, both the yield stress and the elastic modulus initially increased dramatically with pH and displayed broad peaks at ...
Barbara J Frisken +2 more
exaly +2 more sources
The rheological properties of carbopol gels II. Oscillatory properties of carbopol gels
International Journal of Pharmaceutics, 1979Abstract Viscoelastic properties of aqueous Carbopol gels were examined at frequencies of 7.91 × 10 −3 to 25 Hz using a Weissenberg rheogoniometer. Neutralized gels changed little from 10 to 50dgC and were similar to unneutralized gels. Data confirmed the dominant elastic nature of Carbopol gels (phase lags of 2–14°) and the relative small change of
B.W. Barry, M.C. Meyer
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Application of Carbopol® to controlled release preparations I. Carbopol® as a novel coating material
International Journal of Pharmaceutics, 2000We investigated the application of Carbopol(R) (CP) as a novel coating material prepared with various grades of CP having different degrees of cross-linking and molecular weights. Viscosity and spray mist size of CP aqueous solutions at various concentrations of CP were measured.
M, Muramatsu +9 more
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Crystallization of Lactose from Carbopol Gels
Pharmaceutical Research, 2000To crystallize lactose under static conditions with a view to preparing crystals of well-defined morphology.et-Lactose monohydrate was crystallized from neutralized Carbopol 934 gels. When the majority of crystals had grown to maturity, the gels were acidified using diluted hydrochloric acid and the crystals were harvested by filtration or ...
Zeng, X M +3 more
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Carbopol 934 as a Dermatological Vehicle
Journal of the American Pharmaceutical Association (Practical Pharmacy ed.), 1955Abstract Professor Nobles, Instructor Caver and Senior Student Streeter of the University of Mississippi report they could successfully incorporate 14 commonly prescribed medicinal agents into a base prepared from Carbopol 934. Resulting ointments were smooth, homogeneous, stable and showed no tendency to develop rancidity.
Ruth E. Streeter +2 more
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International Journal of Pharmaceutics, 1979
Abstract The effect of physical and chemical variables on consistency of Carbopol 940 and 941 gels was investigated by continuous shear rheometry. Gels provided plastic flow curves with negligible hysteresis. Continuous shear properties were not greatly affected by centrifuging, milling, temperature cycling, and ageing.
B.W. Barry, M.C. Meyer
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Abstract The effect of physical and chemical variables on consistency of Carbopol 940 and 941 gels was investigated by continuous shear rheometry. Gels provided plastic flow curves with negligible hysteresis. Continuous shear properties were not greatly affected by centrifuging, milling, temperature cycling, and ageing.
B.W. Barry, M.C. Meyer
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Controlled Release of Estradiol Solubilized in Carbopol/Surfactant Aggregates
Journal of Controlled Release, 2003The potential of carbopol/surfactant dispersions as solubilizing and controlled release systems of estradiol (a poorly water-soluble drug) was evaluated. The solubilization of estradiol in the dispersions of Carbopol 934 (0.25%) and Pluronic F-127, Tween 80, sodium dodecylsulfate (SDS), or benzalkonium chloride (BkCl) was assessed, by differential ...
Carmen Alvarez-Lorenzo +2 more
exaly +3 more sources