Abstract
The mechanical properties of polymethyl methacrylate and copolymers formed with both ethyl methacrylate and butyl methacrylate were investigated. Six polymers were produced by bulk polymerization, measured for molecular weight and glass transition temperature, T gand assessed for modulus of elasticity and fracture toughness. Increasing the concentration of ethyl methacrylate or butyl methacrylate resulted in a linear decrease in the glass transition temperature, modulus of elasticity, and fracture toughness. A comparison of testing environments revealed that the modulus of elasticity was reduced when conditioned and tested in water at 37 °C compared to ambient laboratory conditions for all polymers. Similar comparisons of the fracture toughness showed an increase for testing in water at 37 °C; however, this was not significant for the lower T gcompositions. Both modulus of elasticity and fracture toughness were strongly correlated with the glass transition temperature and composition.
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References
J. Charnley J. Bone Joint Surg. 42B (1960) 1265.
G. D. Stafford, J. F. Bates and R. Huggett, J. Dent. 11 (1983) 294.
S. Saha and S. Pal, J. Biomed. Mater. Res. 18 (1984) 435.
W. R. Krause and R. Mathis, J. Appl. Biomater. 22 (1988) 37.
R. D. Beckenbaugh and D. M. Ilstrup, J. Bone Joint Surg. 60A (1978) 306.
A. S. Litsky, R. M. Rose, C. T. Rubin and E. L. Thrasher, J. Orthop. Res. 8 (1990) 623.
B. Weightman, M. A. R. Freeman, P. A. Revell, M. Braden, B. E. J. Albrektsson and L. V. Carlson, J. Bone Joint Surg. 69B (1987) 558.
R. Huiskes, Acta Orthop. Scand. Suppl. 185 (1979).
ASTM Standard D790-90, “in Annual Book of ASTM Standards”, Part 08.01 (American Society for Testing and Materials, Philadelphia, PA, 1990).
ASTM Standard E399-83, in “Annual Book of ASTM Standards”, Part 03.01 (American Society of Testing and Materials, Philadelphia, PA, 1990).
D. W. Jones, G. C. Hall, E. J. Sutow, M. F. Langman and K. N. Robertson, J. Dent. Res. 70 (1991) 874.
B. Ellis, A. J. Hare and R. Van Noort, J. Appl. Polym. Sci. 30 (1985) 4517.
R. P. Kusy and D. T. Turner, J. Biomed. Mater. Res. 9 (1975) 89.
D. W. Burke, E. I. Gates, W. H. Harris, J. Bone Joint. Surg. 66A (1984) 1265.
J. A. Brydson, “Plastic Materials” (Butterworth, UK, London, 1982).
R. P. Kusy and M. J. Katz, J. Mater. Sci. 11 (1976) 1475.
A. J. C. Lee, R. S. M. Ling and S. S. Vangala, J. Med. Eng. Tech. 2 (1977) 137.
S. Hashemi and J. G. Williams, J. Mater. Sci. 19 (1984) 46.
T. A. Freitag and S. L. Cannon, J. Biomed. Mater. Res. 10 (1976) 805.
J. A. Johnson, D. W. Jones, A. S. Rizkalla and H. W. King, in “Proceedings of the 68th General Session of the International Association for Dental Research”, Cincinnati, March 1990, p. 207.
R. W. Phillips, “Science of Dental Materials” (Saunders, Philadelphia, PA, 1982).
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Johnson, J.A., Jones, D.W. The mechanical properties of PMMA and its copolymers with ethyl methacrylate and butyl methacrylate. JOURNAL OF MATERIALS SCIENCE 29, 870–876 (1994). https://doi.org/10.1007/BF00351404
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DOI: https://doi.org/10.1007/BF00351404