Dynamic Mechanical Behavior of Ultra-High Molecular Weight Polyethylene Irradiated with Gamma Rays

Choon Soo Lee; Jae Young Jho; Kuiwon Choi; Tae-Won Hwang

Macromolecular Research, Vol.12, No.1, 141-143, February, 2004

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Dynamic Mechanical Behavior of Ultra-High Molecular Weight Polyethylene Irradiated with Gamma Rays

Choon Soo Lee, Jae Young Jho^†, Kuiwon Choi¹, and Tae-Won Hwang²

Hyperstructured Organic Materials Research Center and School of Chemical Engineering, Seoul National University, Seoul 151-744, Korea
¹Biomedical Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
²Research and Development Division for Hyundai Motor Company and Kia Motors Corporation, Kyunggi 445-850, Korea

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We have investigated the dynamic mechanical behavior of ultra-high molecular weight polyethylene (UHMWPE) irradiated with varying doses of gamma rays. A relaxation peak in the loss factor curve, which has not been reported previously in the literature, is observed at a temperature above the crystal melting temperature. The peak is unique to UHMWPE and appears to be related to the high degree of entanglement. Because the temperature and intensity of the peak are reduced by irradiation-induced chain scission and crosslinking, respectively, we believe that the peak is associated with disentanglement relaxation. The behavior of the storage modulus in the melt state agrees with the classical theory of rubber elasticity.

Keywords:polyethylene;ultra-high molecular weight;dynamic mechanical analysis;irradiation;crosslinking.

[References]

Kurtz SM, Muratoglu OK, Evans M, Edidin AA, Biomaterials, 20, 1659 (1999)
Premnath V, Bellare A, Merrill EW, Jasty M, Harris WH, Polymer, 40(9), 2215 (1999)
Zachariades AE, Logan JA, J. Polym. Sci. B: Polym. Phys., 21, 821 (1983)
Shen FW, McKellop HA, Salovey R, J. Biomed. Mater. Res., 41, 71 (1998)
Minkova L, Mihailov M, Colloid Polym. Sci., 265, 1 (1987)
deBoer AP, Pennings AJ, J. Polym. Sci. B: Polym. Phys., 14, 187 (1976)
Kang PH, Park JS, Nho YC, Macromol. Res., 10(6), 332 (2002)
Popli R, Glotin M, Mandelkern L, Benson RS, J. Polym. Sci. B: Polym. Phys., 22, 407 (1984)
Khanna YP, Turi EA, Taylor TJ, Vickroy VV, Abbott RF, Macromolecules, 18, 1302 (1985)
Lee CS, Yoo SH, Jho JY, Choi K, Hwang TW, Macromol. Res., to submitted
Peacock AJ, Handbook of Polyethylene, Marcel Dekker, New York, pp. 399-401 (2000)

[Referenced By]

[Related Articles]

[1] Kurtz SM, Muratoglu OK, Evans M, Edidin AA, Biomaterials, 20, 1659 (1999)

[2] Premnath V, Bellare A, Merrill EW, Jasty M, Harris WH, Polymer, 40(9), 2215 (1999)

[3] Zachariades AE, Logan JA, J. Polym. Sci. B: Polym. Phys., 21, 821 (1983)

[4] Shen FW, McKellop HA, Salovey R, J. Biomed. Mater. Res., 41, 71 (1998)

[5] Minkova L, Mihailov M, Colloid Polym. Sci., 265, 1 (1987)

[6] deBoer AP, Pennings AJ, J. Polym. Sci. B: Polym. Phys., 14, 187 (1976)

[7] Kang PH, Park JS, Nho YC, Macromol. Res., 10(6), 332 (2002)

[8] Popli R, Glotin M, Mandelkern L, Benson RS, J. Polym. Sci. B: Polym. Phys., 22, 407 (1984)

[9] Khanna YP, Turi EA, Taylor TJ, Vickroy VV, Abbott RF, Macromolecules, 18, 1302 (1985)

[10] Lee CS, Yoo SH, Jho JY, Choi K, Hwang TW, Macromol. Res., to submitted

[11] Peacock AJ, Handbook of Polyethylene, Marcel Dekker, New York, pp. 399-401 (2000)