Vapour Absorption in Melamine-Formaldehyde Resin

• Authors: J. Wawryszczuk , K. Ciesielski , J. Goworek
• Languages of publication: EN

Abstracts

EN

The effects of vapour absorption on positron annihilation in cross-linked polymer were investigated. Contrary to linear polymers, absorption of vapour in cross-linked resin leads to the shortening of o-Ps lifetime. In vacuum absorbed molecules diffuse out. At room temperature desorption of hexane and hexanol is not complete; full elimination of absorbed molecules requires sample temperature increase.

Keywords

EN

78.70.Bj; 36.10.Dr; 61.41.+e; 66.30.-h

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 61.41.+e: Polymers, elastomers, and plastics(see also 81.05.Lg in materials science; for rheology of polymers, see section 83; for polymer reactions and polymerization, see 82.35.-x in physical chemistry and chemical physics)
• 36.10.Dr: Positronium(see also 82.30.Gg Positronium chemistry)
• 66.30.-h: Diffusion in solids(for surface and interface diffusion, see 68.35.Fx)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2001
• Volume: 99
• Issue: 3-4
• Pages: 523-528

Dates

published

2001-03/04

received

2000-09-18

Contributors

author

J. Wawryszczuk

• Institute of Physics, Maria Curie-Skłodowska University, Pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

author

K. Ciesielski

• Institute of Physics, Maria Curie-Skłodowska University, Pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

author

J. Goworek

• Faculty of Chemistry, Maria Curie-Skłodowska University, Pl. M. Curie-Skłodowskiej 3, 20-031 Lublin, Poland

References

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• 2. Y. Ito, in: Structure and Properties of Glassy Polymers, Eds. M.R. Tant, A.J. Hill, ACS Symposium Series 710, American Chemical Society, Washington 1998, p. 334
• 3. T. Suzuki, Y. Oki, M. Numajiri, T. Miura, K. Kondo, Y. Shiomi, Y. Ito, Polymer, 37, 3025, 1996
• 4. Y. Ito, A. Shimadzu, K. Ikeda, Acta Phys. Pol. A, 95, 546, 1999
• 5. P. Kirkegaard, N.J. Pedersen, M. Eldrup, Riso Report M2740, Riso National Laboratory, Denmark 1989
• 6. M. Eldrup, D. Lightbody, J.N. Sherwood, Chem. Phys., 63, 51, 1981
• 7. C.L. Soles, F.T. Chang, D.W. Gidley, A.F. Yee, J. Polym. Sci. Part B: Polym. Phys., 38, 776, 2000

Identifiers

DOI

10.12693/APhysPolA.99.523