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3 edition of Gas permeation measurements on small polymer specimens found in the catalog.

Gas permeation measurements on small polymer specimens

Karen Burns

Gas permeation measurements on small polymer specimens

final report

by Karen Burns

  • 63 Want to read
  • 2 Currently reading

Published by Dept. of Chemical Sciences, College of Sciences, Old Dominion University in Norfolk, Va .
Written in English

    Subjects:
  • Polymers -- Permeability -- Measurement.,
  • Gases -- Permeability -- Measurement.

  • Edition Notes

    Statementby Karen S. Burns.
    SeriesNASA-CR -- 182439., NASA contractor report -- NASA CR-182439.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15288708M

    MEASUREMENT OF BARRIER PERFORMANCE The permeation through the polymer composites has been measured through many different direct and indirect methods. One of the common methods for the permeation measurements is measuring the permeability directly as composite property in the commercial transmission measuring equipments (figure 7). Thus permeation of water vapor may have adverse effects on trace gas measurements if sample air is not dried at the time of analysis. The increasing water vapor concentration leads to dilution of trace gas concentrations in sample air and might also lead to other storage- or analysis-related measurement artifacts for some species, including dO2.   Gas and Liquid Permeability Measurements in Wolfcamp Samples. NASA Astrophysics Data System (ADS) Bhandari, A. R.; Flemings, P. B.; Ramiro-Ramirez, S.; Polito, P. J. Argon gas and liquid (dodecane) permeability measurements in three mixed quality Wolfcamp samples demonstrate it is possible to close multiple bedding parallel open artificial micro-fractures and obtain .


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Gas permeation measurements on small polymer specimens by Karen Burns Download PDF EPUB FB2

Get this from a library. Gas permeation measurements on small polymer specimens: final report. [Karen Burns; United States. National Aeronautics and Space Administration.].

Gas permeation measurements on small polymer specimens [microform]: final report / by Karen S. Burns; An enzyme-immunoassay for the detection of blood components adsorbed to polymeric surfaces / door Willem Permeation of oxygen through high purity, large. Single-gas and mixed-gas permeation experiments through zeolite T membranes were carried out by a vacuum method at ∼ K using He, H2, CO2, O2, N2, Author: Tadashi Uragami.

Gas sorption and permeation in PIM 10−8 m2 s−1) than those from sorption measurements (2410−8 m2 s−1), probably due to substantially low mass uptake in Henry mode (11% of.

Introduction. Since the first report of the membrane-based separation concept by Graham inmembranes have been developed and utilized on an industrial scale for air separation, hydrogen recovery, and hydrocarbon/light gas realization that CO 2 emitted by fossil fuel combustion is a major greenhouse gas, and that global warming is an urgent issue worldwide, has Cited by: Minimising the transport of corrosive reactants such as carbon dioxide, hydrogen sulfide and chloride ions to the surfaces of carbon steel pipes by the use of polymer barrier layers is of major interest in the oil and gas sector.

In these applications, there is a requirement to assess the performance of these barrier layers although it is difficult to perform long-term predictions of barrier Author: Bernadette Craster, Timothy G.J. Jones. In our experiments the intrinsic delay time between a gas switch (i.e.

O 2 switched on) to first detector signal, was measured using a pin hole in a polymer film and found to range between s for a 10 cc/min feed and 5 cc/min pick-up gas flow (conditions which applied to most experiments reported here) and a delay of s when both flows Cited by: 7.

The membrane was dug out by FIB milling and small specimens (3 μm × 25 μm × 15 μm) was prepared. fourth, and fifth measurements was accepted as permeance data. The gas permeance at each temperature was evaluated in the order of Gas permeation properties through the SiC/-γ-Al 2 O 3 /α-Al 2 O 3 membrane in the temperature range Author: Takayuki Nagano, Koji Sato, Koichi Kawahara.

@article{osti_, title = {PERMEATION AND DIFFUSION OF HYDROGEN ISOTOPES AND HELIUM THROUGH POLYMERIC MATERIALS}, author = {Evans, F.P. and Gibson, R. and Hutcheson, C.G. and Jones, P.M.S.}, abstractNote = {The permeability of two epoxy resins, Ziegler polyethylene, and nylon, to hydrogen isotopes and helium was studied over the temperature range 20 to 55 deg C.

Keywords Edge-seal Gas loss Long-term loads Test method Expansion Load transfer Measure-ment Insulating glass unit 1 Introduction The edge-seal provides long-term resistance against permeation of moisture and gases from the inter-pane spaces of insulating glass units (IGU).

It is of highCited by: 1. The seven-layer HDPE material resulted in a permeation of g*mm/day*m 2 in CE10, while the value of PPS-5 material was only g*mm/day*m 2. As industry standards move towards more stringent requirements for fuel permeation, the flexible PPS materials with excellent barrier properties can be considered in automotive fuel systems.

Pyrolysis Gas Chromatographic Characterization, Differentiation, and Identification of Biopolymers—An Overview FORREST L. BAYER Chap DOI: /bach Publication Date (Print): June 1, Size-exclusion chromatography (SEC), also known as molecular sieve chromatography, is a chromatographic method in which molecules in solution are separated by their size, and in some cases molecular weight.

It is usually applied to large molecules or macromolecular complexes such as proteins and industrial polymers. Typically, when an aqueous solution is used to transport the sample through Analytes: macromolecules, synthetic polymers. The lubricant used was a synthetic polyalphaolefin base oil, PAO32 (supplied by Idemitsu Kosan Co.

Ltd.) with a density of gcm −3 and a viscosity as shown in Table : Monica Ratoi, Hiroyoshi Tanaka, Hiroyoshi Tanaka, Brian G. Mellor, Joichi Sugimura, Joichi Sugimura.

There is long-standing interest in developing membranes possessing uniform pores with dimensions in the range of 1 nm and physical continuity in the macroscopic transport direction to meet the needs of challenging small molecule and ionic separations.

Here we report facile, scalabe fabrication of polymer membranes with vertically (i.e., along the through-plane direction) aligned 1 nm pores by Cited by: Standard Test Method for Corona-Treated Polymer Films Using Water Contact Angle Measurements: D - Standard Practice for Cutting Film and Sheeting Test Specimens: D - Standard Guide for Determination of Thickness of Plastic Film Test Specimens: D - United States Environmental Protection Agency Air Pollution Training Institute MD20 Environmental Research Center Research Triangle Park NC EPA / September Air APTI Course Atmospheric Sampling Student Manual Prepared By: M.

Elias R. Jordan O. Durham Revised By: K.C. Joerger B.M. Ray Northrop Services, Inc. P.O. Box Research. D Standard Test Method for Corona-Treated Polymer Films Using Water Contact Angle Measurements.

D Standard Test Methods for Physical Dimensions of Solid Plastics Specimens. D() Standard Specification for Molding Compounds, Thermosetting. Samples for tensile testing were prepared according to the standard for tensile testing of polymer thin films (ISO ), with reduced size according to the standard on test specimens for plastics (ISO ) for reduced-scale test specimens, and were therefore in the shape of a dog-bone sample that was 75 mm long and 5 mm wide along the Cited by: Polymer impregnation was shown to greatly improve the leach rate of tritiated concrete specimens on a laboratory scale.

This technique is proposed for the disposal of high-level tritiated aqueous waste. Work was directed towards the development of a soak impregnation technique for large-scale samples. As a consequence of the barrier properties of the material, the transfer of these molecules ranges from high to knowledge of the permeation behaviours of the polymer film is very important to ascertain optimum shelf-life for Aromatic Foods or Foods that.

Geosynthetic clay liners (GCLs) are widely used as hydraulic barriers in waste containment systems because they can have low hydraulic conductivity. Actually, there is an increasing industry need to join dissimilar materials. Hybrid parts made by welding of dissimilar materials such as metal to metal, polymer to polymer, metal to polymer, and metal to ceramic are nowadays in high demand because the objective is to reduce the total weight and maintaining essential physical properties.

EFFECT OF FREEZE-THAW ON THE HYDRAULIC CONDUCTIVITY OF BARRIER MATERIALS: LABORATORY AND FIELD EVALUATION by Jason F. Kraus and Craig H. Benson Environmental Geotechnics Program Department of Civil and Environmental Engineering University of Wisconsin-Madison Madison, Wisconsin Cooperative Agreement CR Environmental Geotechnics.

Dynamic mechanical analysis (DMA) is the technique of applying a stress or strain to a sample and analyzing the response to obtain phase angle and deformation data.

Miller's book on polymer properties By the time, Ferry wrote the Viscoelastic Properties of Polymers indynamic measurements were an integral part of polymer science Cited by: the environment. CERCLA requirements include performance evaluations of the remedy, including monitoring systems, at 5-year intervals.

The postclosure monitoring and evaluation periods can be modified if the closed CERCLA site is redeveloped for beneficial use following closure (e.g., development of a contaminated, or brownfield, site). Full text of "Polymers Division: Technical Activities " See other formats.

Responsive polymer materials can adapt to surrounding environments, regulate transport of ions and molecules, change wettability and adhesion of different species on Cited by:   All test specimens were covered with wet hessian and placed in a constant temperature room at 18 (± 2) ° C.

After 1 day, the specimens were removed from their mold and cured in a water bath at a constant temperature of 20 (± 1) ° C. The cubes were removed after 28 and 56 days and tested for compressive strength according to BS-EN temperature dependent mechanic al properties of composite materials and uncertainties in experimental measurements by lucian m.

speriatu a dissertation presented to the graduate school of the university of flor ida in partial fulfillment of the requirements for the degree of. Full Article. Nanocellulose in Thin Films, Coatings, and Plies for Packaging Applications: A Review.

Martin A. Hubbe, a Ana Ferrer, b Preeti Tyagi, a Yuanyuan Yin, a.c Carlos Salas, a Lokendra Pal, a and Orlando J. Rojas a,d This review article was prompted by a remarkable growth in the number of scientific publications dealing with the use of nanocellulose (especially nanofibrillated.

Full text of "Introduction To Polymer Chemistry" See other formats. Modern Technology Of Plastic & Polymer Processing Industries by Niir Board, ISBN:Rs. / US$. Developed by STG 30 - Oil and Gas Production—Cathodic Protection; Developed by STG 31 - Oil and Gas Production—Corrosion and Scale Inhibition; Developed by STG 31 - Oil and Gas Production-Corrosion and Scale Inhibition; developed by stg 32 – oil and gas production and m; Developed by STG 32 - Oil and Gas Production—Metallurgy.

literature review: effect of clo2 on ageing of polymer materials and related test methods This research addresses the effect of nucleation on the global aging behavior and the fatigue crack growth (FCG) resistance of commercial alpha- and beta-nucleated polypropylene random copolymer pipe grades (PP-R) when exposed to chlorinated water (5 mg/l.

Four sets of measurements were performed including (1) measurements using scatter kinematics with an MeV neutron beam, (2) measurements using scatter kinematics with a MeV neutron beam, (3) measurements of MeV full energy deposition events along the a and b axes, and (4) measurements of the event count rate along the a and b.

Focus on Packaging Testing Including Instruments and Services. Anonymous [email protected] Blogger 61 1 25 tag. Title 21 Food and Drugs Parts to Revised as of April 1, Containing a codification of documents of general applicability and future effect As of April 1, Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register.

HANDBOOK OF POLYMER SYNTHESIS, CHARACTERIZATION, AND PROCESSING Edited by ENRIQUE SALD´ıVAR-GUERRA Centro de Investigaci´on en Qu´ımica Aplicada Saltillo Coahuila, M´exico EDUARDO VIVALDO-LIMA Facultad de Qu´ımica, Universidad Nacional Aut´onoma de M´exico Ciudad Universitaria, M´exico, D.F., M´exico.

materials deposited during the ion implantation. The samples were then subjected to D2 gas permeation treatments at K for about 10 days.

The D2 permeation system was the same with that reported by us previously [7,8,10]. The upstream side was filled with D2 of kPa. The purity of the D2 gas was %.

The downstream side wasFile Size: 14MB. Gas permeation measurements on small polymer specimens. NASA Technical Reports Server (NTRS) Burns, Karen S.; Vannorman, John D.

Mass spectrometry was used to measure oxygen and nitrogen permeabilities while polarography was used to measure oxygen permeabilities for several contact lens materials.Apr.

6, CODE OF FEDERAL REGULATIONS 21 Part to Revised as of April 1, Food and Drugs Containing a codification of documents of general applicability and future effect As of April 1, With Ancillaries.

Published by. Office of the Federal Register. National Archives and Records. Administration. A Special Edition of the Federal Register U.S. GOVERNMENT PRINTING OFFICE. ] The gas chromatograph is equipped with a flame-ionization detector, a mm × m fused-silica column coated with a µm layer of phase G43 or a mm × m wide-bore column coated with a µm layer of phase G The carrier gas is nitrogen or helium with a linear velocity of about 35 cm per second, and a split ratio of