Epoxide Moisture Absorption Studied by Positron Lifetime Spectroscopy


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In the last years there have been made several studies, involving many materials, with the aim of trying to explain some physical, chemical and mechanical macroscopic properties of these materials, across the study of the free volumes at the atomic and molecular scale. The positron annihilation lifetime spectroscopy (PALS) is one of the most widely used in this type of studies, and it was here used to characterize the free volumes fraction of a commercial epoxy and trying to understand the mechanism associated with the process of moisture absorption which leads to an increase of mass and volume on this commercial epoxy.



Materials Science Forum (Volumes 730-732)

Edited by:

Ana Maria Pires Pinto and António Sérgio Pouzada




J.M.M. Luís et al., "Epoxide Moisture Absorption Studied by Positron Lifetime Spectroscopy", Materials Science Forum, Vols. 730-732, pp. 988-993, 2013

Online since:

November 2012




[1] W.S. Chow, Water absorption of epoxy/glass fiber/organo-montmorillonite nanocomposites, Express Polym. Lett. 1 (2007) 104-108.

DOI: 10.3144/expresspolymlett.2007.18

[2] C.L. Soles, F.T. Chang, D. W Gidley, A.F. Yee, Contributions of the Nanovoid Structure to the Kinetics of Moisture Transport in Epoxy Resins, J. Polym. Sci. B: Phys. 38 (2000) 776–791.

DOI: 10.1002/(sici)1099-0488(20000301)38:5<776::aid-polb15>3.0.co;2-a

[3] G. Dlubek, R. Buchhold, Ch. Hübner, A. Nakladal, Water in Local Free Volumes of Polymides: A Positron Lifetime Study, Macromolecules 32 (1999) 2348-2355.

DOI: 10.1021/ma981381s

[4] C.L. Soles, F.T. Chang, B.A. Bolan, H.A. Hristov, D.W. Gidley, A.F. Yee, Contributions of the Nanovoid Structure of the Moisture Absorption Properties of Epoxy Resins, J. Polym. Sci. B: Phys. 36 (1998) 3035–3048.

DOI: 10.1002/(sici)1099-0488(199812)36:17<3035::aid-polb4>3.0.co;2-y

[5] Browning, C. E. The mechanisms of elevated temperature property losses in high performance structural epoxy resin matrix materials after exposures to high humidity environments, Polymer Engineering & Science 18 (1978) 16–24.

DOI: 10.1002/pen.760180104

[6] S. Mostovoy, E.J. Ripling, The fracture toughness and stress corrosion cracking characteristics of an anhydride-hardened epoxy adhesive, J. Appl. Polym. Sci. 15 (1971) 641–659.

DOI: 10.1002/app.1971.070150311

[7] R.J. Morgan, The effect of thermal history and strain rate on the mechanical properties of diethylenetriamine-cured bisphenol-A-diglycidyl ether epoxies, J. Appl. Polym. Sci. 23 (1979) 2711–2717.

DOI: 10.1002/app.1979.070230916

[8] A. Dupasquier, A. Mills, Jr., Positron Spectroscopy of Solids, IOS Press, Amsterdam, (1995).

[9] Y. C Jean, M. Eldrup, D.M. Schrader, R.N. West, Positron Annihilation ICPA-11, Trans. Tech. Publications, Kansas City, (1998).

[10] P.E. Mallon, Application to polymers, in: Y. C Jean, P.E. Mallon, D.M. Schrader (Eds. ), Principles and Applications of Positron and Positronium Chemistry. World Scientific, New Jersey, 2003, pp.253-298.

DOI: 10.1142/9789812775610_0001

[11] S.J. Tao, Positron annihilation in molecular substances, Chemical Physics 56 (1972) 5499-yy.

[12] M. Eldrup, D. Lightbody, J.N. Sherwood, The temperature dependence of positron lifetimes in solid pivalic acid, Chemical Physics 63 (1981) 51-58.

DOI: 10.1016/0301-0104(81)80307-2

[13] J.J. Crank, G.S. Park, Diffusion in Polymers, Academic Press, London (1968) xx-yy.

[14] J. Kansy, Microcomputer Program for Analysis of Positron Annihilation Lifetime Spectra, Nucl. Instr. and Meth. A 374 (1996) 235-244.

[15] O.E. Mongensen, Positron Annihilation in Chemistry, Springer-Verlag, Heidelberg, (1995).

[16] H. Nakanishi, Y.C. Jean, Studies in physical and theoretical chemistry in: D.M. Schrader, Y.C. Jean (Eds. ), Positron and Positronium Chemistry, Elsevier Sci. Publ., Amsterdam, 1988, pp.159-192.

[17] Y.C. Jean, Positron annihilation spectroscopy for chemical analysis: A novel probe for microstructural analysis of polymers, Microchem. J. 42 (1990) 72-102. and Y.C. Jean, Positron annihilation in polymers, Mater. Sci. Forum 175-178 (1995) 59-70.

DOI: 10.1016/0026-265x(90)90027-3

[18] R. Buchhold, A. Nakladal, K. Sager, G. Gerlach, K. Sahre, M. Müller, K. -J. Eichhorn, M. Herold, G.J. Gauglitz, A Study on the microphysical mechanisms of adsorption in polyimide layers for microelectronic applications J. Electrochem. Soc. 145, (1998).

DOI: 10.1149/1.1838906

[19] S.M. Jordan, W.J. Koros, A free volume distribution model of gas sorption and dilation in glassy polymers, Macromolecules, 28 (1995) 2228-2235.

DOI: 10.1021/ma00111a017

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