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  • 1
    Electronic Resource
    Electronic Resource
    Use of inverse gas chromatography to quantify interactions in anhydride cured epoxy resins (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 35 (1994), S. 135-143 
    Details
    ISSN: 0959-8103
    Keywords: inverse gas chromatography ; solubility parameter ; epoxy resin ; phthalic anhydride ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Previous work has shown that the inverse gas chromatography (IGC) method combined with Flory-Huggins and solubility parameter theories could be used to quantify interactions in an amine cured epoxy resin matrix. In the present communication the same procedures have been adopted for an anhydride cured epoxy resin matrix. The solubility parameter at 298 K thereby obtained for the cured resin was 20-6 (MPa)1/2, which lies between the corresponding values of 18.8(MPa)1/2 and 22.5 (MPa)1/2 for the precursors, viz. Epikote 828 (an epoxide resin) and phthalic anhydride, respectively. It was noted that great care must be exercised regarding choice of solvent used for deposition of phthalic anhydride on a glass bead support because of reaction to phthaclic acid. Similar consderations apply to the choice of probes used.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pi.1994.210350203
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Investigations by inverse gas chromatography relevant to coated glass fibre/epoxy composites (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 35 (1994), S. 145-152 
    Details
    ISSN: 0959-8103
    Keywords: inverse gas chromatography ; cured epoxy resin ; solubility parameter ; coated glass fibre ; composite ; interaction parameter λ ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Inverse gas chromatography has been used on two types of coated glass fibre over a range of temperatures. Interaction parameters, χ, extrapolated to 298K yielded values for the solubility parameter, δ, of 20.1 (MPa)1/2 and 23.5(MPa)1/2. After removal by combustion of the coatings, a higher value was yielded for the δ of glass. The findings, in conjunction with values of 19.8(MPa)1/2 and 20-6(MPa)1/2 for an amine cured epoxy resin and phthalic anhydride cured epoxy resin, respectively, provide a useful guide to the appropriate combination of cured resin matrix with coating with respect to optimum interfacial interaction.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pi.1994.210350204
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Use of inverse gas chromatography to quantify interactions in amine cured epoxy resins (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 35 (1994), S. 119-133 
    Details
    ISSN: 0959-8103
    Keywords: inverse gas chromatography ; solubility parameter ; epoxy resin ; composite ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Flory-Huggins interaction parameters, λ, were determined for a series of probes in an amine cured epoxy resin matrix (433-493 K) and its precursors (324-363 K) by inverse gas chromatography (IGC). Hildebrand-Scatchard theory was combined with Flory-Huggins theory in order to estimate infinte dilution solubility parameters (δ2) for the matrix and its precursors at 298 K. It was shown that the value of the solubility parameter for the cured resin matrix lies between those of its precursors. Compared to the majority of published work, an unusual aspect of this application of IGC is that solubility parameters have been determined when the stationery phases are (i) small molecules and (ii) a highly crosslinked polymer. Moreover, all possible attempts have been made to ensure equilibrium conditions between probe and stationary phase, and compensation for asymmetry of peak profile has been applied in determining δ2. The solubility parameters estimated by IGC are in good agreement with those calculated by other methods.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pi.1994.210350202
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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