Influence of electron radiation on surface free energy of low density polyethylene film

• Autorzy: Żenkiewicz M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: of this paper is to study the effect of the electron radiation, generated in a high voltage accelerator, on surface free energy (SFE) of low density polyethylene film. Design/methodology/approach: An LAE 13/9 linear accelerator (former USSR) was used to irradiate the examined polyethylene film. The maximum electron energy was 13 MeV, controllable energy range, 5-13 MeV, and average power of the electron beam, 9 kW. The contact angles were measured with a G 11 goniometer (Krüss GmbH, Germany) using doubly distilled water, glycerol, formamide, diiodomethane, and alpha bromonaphthalene. The calculations of SFE were done by means of the Owens Wendt or the van Oss-haudhury-Good methods. Findings: The value of the SFE for the polyethylene film, increasing monotonically with the radiation dose, depends on both the applied method of calculation and the set of measuring liquids. The differences between the results obtained with these two methods and sets of liquids generally increase with the radiation dose. Research limitations/implications: The SFE value of polyethylene film depends not only on the intermolecular interactions originating in several outer atomic layers of the film but also on the intermolecular interactions occurring in the measuring liquids and on the way of performing investigations. Thus, it may be compared only when determined with the same method and using the same measuring liquids. Practical implications: The results of presented research allow determining the recommendations referring to the optimization of irradiation technology of low density polyethylene film. Originality/value: The differences in the SFE values calculated with the Owens Wendt and the van Oss Chaudhury-Good methods depend not on only on the kind of the calculation method but also on the kind of measuring liquid used in contact angle measurement.

Słowa kluczowe

EN

engineering polymers; surface free energy; quality of adhesive joints; electron beam irradiation

PL

polimery konstrukcyjne; swobodna energia powierzchniowa; jakość połączeń klejowych; promieniowanie wiązką elektronową

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 25, nr 2
• Strony: 43--46
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Żenkiewicz M.

• Department of Material Engineering, Kazimierz Wielki University, ul. Chodkiewicza 30, 85 046, Bydgoszcz, Poland,

Bibliografia

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• [2] A.J. Berejka, Characterization of low-voltage electron beam, Radiation Physics and Chemistry 71 (2004) 305-308.
• [3] A.J. Berejka, T. Avnery, C. Carlson, Modular low-voltage electron beams, Radiation Physics and Chemistry 71 (2004) 299-303.
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• [5] D.K. Owens, R.C. Wendt, Estimation of the surface free energy of polymers, Journal of Applied Polymer Science 13 (1969) 1741-1747.
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• [7] M. Żenkiewicz, Effects of electron-beam irradiation on wettability and surface free energy of a polypropylene film, Journal of Adhesion and Adhesives 25 (2005) 61-66.
• [8] M. Żenkiewicz, Comparative study on the surface free energy of a solid calculated with different methods, Polymer Testing 26 (2007) 14-19.
• [9] S. Wu, Polymer Interfaces and Adhesion, Dekker, New York, 1982, 184.
• [10] C. Della Volpe, S. Siboni, Acid-base surface free energies of solids and the definition of scales in the Good - van OSS Chaudhury theory, Journal of Adhesion Science and Technology 14 (2000) 235-272.
• [11] A. Singh, Irradiation of polyethylene: Some aspects of crosslinking and oxidative degradation, Radiation Physics and Chemistry 56 (1999) 375-380.