Academic literature on the topic 'Vapour pressure osmometry'

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Journal articles on the topic "Vapour pressure osmometry"

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Belaustegi, Y., M. J. Citores, and L. A. Fernández. "Automation of Vapour Pressure Osmometry measurements." Journal of Automatic Chemistry 13, no. 5 (1991): 181–85. http://dx.doi.org/10.1155/s1463924691000329.

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A program has been developed for the control of Vapour Pressure Osmometry (VPO) measurements. The output signal of a Vapour Pressure Osmometer is read by an A/D converter card installed in one of the expansion slots of a PC microcomputer. The stability of the measurements is checked by analysing the first derivative of the smoothed signals, which is calculated in real time. Sets of repeated measurements are carried out under the supervision of a computer program as a check for their reproducibility. When the set is ended the program calculates the average and its standard deviation.The program
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Koumantakis, G., and L. E. Wyndham. "An evaluation of osmolality measurement by freezing point depression using micro-amounts of sample." Journal of Automatic Chemistry 11, no. 2 (1989): 80–83. http://dx.doi.org/10.1155/s1463924689000167.

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An evaluation of the Advanced micro-osmometer is presented. This instrument has been shown to have an excellent analytical precision (within-run CV = 0.59%, between-day CV = 0.58%). It is accurate over an analytical range of 0-2000 mmol/kg of osmolality shown by linearity studies and split sample correlations against vapour pressure osmometry, freezing point osmometry and an external quality assurance programme. Analytical errors due to operator technique are almost eliminated because of good instrument design. Preliminary results on whole-blood osmolality are included. The required sample siz
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Madden, McKenzie J., Sarah N. Ellis, Anna Riabtseva, Aaron D. Wilson, Michael F. Cunningham, and Philip G. Jessop. "Comparison of vapour pressure osmometry, freezing point osmometry and direct membrane osmometry for determining the osmotic pressure of concentrated solutions." Desalination 539 (October 2022): 115946. http://dx.doi.org/10.1016/j.desal.2022.115946.

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Adames, W., W. Breuer, A. Michalczyk, and W. Borchard. "Differential vapour pressure osmometry—I. Description of the method." European Polymer Journal 25, no. 9 (1989): 947–50. http://dx.doi.org/10.1016/0014-3057(89)90115-8.

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Brahmbbatt, D. I., L. Jayabalan, and Harshad D. Patel. "Synthesis and characterization of poly(coumarin-urethane)s." High Performance Polymers 6, no. 3 (1994): 257–62. http://dx.doi.org/10.1088/0954-0083/6/3/009.

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Poly(coumarin-urethane)s (PCUs) were prepared by the condensation reaction of 3,3'-dihydroxy-6,6'-methylcnebiscoumarin (DHMBC) with various diisocyanates. All the poly(coumarin-urethane)s were characterized by elemental analysis, IR spectral studies, number average molecular weight determination (by vapour pressure osmometry), viscosity studies and thermogravimetry.
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Porter, LJ. "Number- and Weight-Average Molecular Weights for Some Proanthocyanidin Polymers (Condensed Tannins)." Australian Journal of Chemistry 39, no. 4 (1986): 557. http://dx.doi.org/10.1071/ch9860557.

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The number-average molecular weights (Mn) and weight-average molecular weights (Mw) for proanthocyanidin polymers (condensed tannins) have been measured by vapour pressure osmometry and low-angle laser light-scattering measurements in methanol. These confirm earlier findings (based on gel permeation chromatography of the peracetate derivatives of these polymers) that they are polydisperse. The results also indicate that the incidence of branching in the polymer chains increases as the average chain length increases.
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Aitken, C., J. F. Harrod, and U. S. Gill. "Structural studies of oligosilanes produced by catalytic dehydrogenative coupling of primary organosilanes." Canadian Journal of Chemistry 65, no. 8 (1987): 1804–9. http://dx.doi.org/10.1139/v87-303.

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The structures of some poly(organosilylenes), [Formula: see text] (R = Ph, p-tolyl, n-hexyl, and benzyl), produced by catalytic dehydrogenative coupling of primary silanes have been studied by infrared, nuclear magnetic resonance, and mass spectroscopies. These results, combined with data on molecular weights and molecular weight distributions from vapour pressure osmometry and gel permeation chromatography, lead to the conclusion that the polymers are linear and have SiH2R end groups. The polymers all have degrees of polymerization of ca. 10 and very narrow molecular weight dipersions. Some p
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Y., VENKATESWARA RAO, A. TEWARI R., and MAITl SUKUMAR. "Reactive lmides as Curing Agents for Epoxy Resins. Part-1. Synthesis and Characterisation." Journal of Indian Chemical Society Vol. 69, Feb 1992 (1992): 90–93. https://doi.org/10.5281/zenodo.5993196.

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Materials Science Centre, Indian Institute of Technology, Khatagpur-721 302 <em>Manuscript received 29 August 1991, accepted 7 February 1992</em> A series of low molecular weight amine-terminated amide-imides (ATRs) has been prepared by reacting a dicarboxylic acid containing an imide group and diamines for <em>use </em>as curing agents for epoxy resins The ATRs have been characterised by nitrogen analysis, viscosity, vapour pressure osmometry (VPO) and spectral data. Molecular weights of ATRs are in the range 400-700. <em>X</em>-Ray diffraction shows these reactive imides which are in general
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Adames, W., A. Michalczyk, and W. Borchard. "Differential vapour pressure osmometry—II. Determination of the thermodynamic properties of oligostyrene/cyclohexane solutions." European Polymer Journal 25, no. 9 (1989): 951–55. http://dx.doi.org/10.1016/0014-3057(89)90116-x.

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Maali, Moora, and Rahmat Sadeghi. "Vapour pressure osmometry determination of water activity of binary and ternary aqueous (polymer+polymer) solutions." Journal of Chemical Thermodynamics 84 (May 2015): 41–49. http://dx.doi.org/10.1016/j.jct.2014.12.009.

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Dissertations / Theses on the topic "Vapour pressure osmometry"

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Khadse, Anil N. "Thermodynamics of polyelectrolyte solutions." Thesis, IIT Bombay, Mumbai, 2003. http://hdl.handle.net/10919/71547.

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Polymers having many ionizable groups in their molecular structure are called Polyelectrolytes. They are extensively used in industries like papermaking, food processing, medicine and pharmaceuticals, water purification, oil field exploration, cosmetic formulation etc. In spite of wide applicability its current status of knowledge is precursory due complexity of their behavior in solution as well as at interface. Solution properties of polyelectrolytes are extensively studied in last 40 years to understand their behavior. The activity is important thermodynamic property. From activity we can g
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Book chapters on the topic "Vapour pressure osmometry"

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Pla, F. "Vapor Pressure Osmometry." In Methods in Lignin Chemistry. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-74065-7_36.

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Gooch, Jan W. "Vapor-Pressure Osmometer." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_12453.

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"Vapor–pressure osmometer." In Encyclopedic Dictionary of Polymers. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_12212.

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