Abstract
Compact tension tests have been performed on re-healed and welded glassy polymers (PMMA-PMMA, SAN-SAN and PMMA-SAN). At temperatures above the glass transition temperature,T g, it was observed that the facture toughness,K Ii, in the interface increased with contact time,t, asK Ii ∝t 1/4 as predicted by a diffusion model. The self-diffusion constantD(T g + 15 K) of chains of molecular weight 1.2×105 can be estimated as 1×10−21sec−1 with an activation energy of 274 kJ mol−1. For full material resistance, the depth of interdiffusion, 〈Δx 2〉1/2, was calculated to be between 2 and 3 nm. Vacuum drying of the specimens, as well as polishing the interfaces, decreases the speed of interdiffusion.
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References
J. G. Williams, in “Advances in Polymer Science” Vol. 27, edited by H. J. Cantow (Springer-Verlag, Berlin, New York, 1978) p. 67.
H. H. Kausch, “Polymer Fracture” (Springer-Verlag, Berlin, New York, 1979) p. 252.
B. J. Briscoe, in “Polymer Surfaces” edited by D. T. Clark and W. J. Feast (Wiley Interscience, New York, 1978) pp. 25–46.
H. Krupp, “Advances in Colloid and Interface Science” Vol. 1, No. 2 (Elsevier, Amsterdam, New York, Oxford, 1976) p. 111.
K. Jud andH. H. Kausch,Polymer Bull. 1 (1979) 697.
E. Bister, PhD dissertation, T. U. Clausthal, 1977, in German.
R. P. Wool, Proceedings of the International Conference on Adhesion and Adsorption of Polymers, Hawaii, 1979 (Plenum Press, New York, 1980) p. 341.
K. De Keeuw andH. Potente,Soc. Plast. Eng. Tech. Pap. 23 (1977) 55–80.
C. B. Bucknall, I. C. Drinkwater andG. R. Smith,Polymer Eng. Sci. 20 (1980) 432.
T. Cosgrove andR. F. Warren,Polymer 18 (1979) 255.
J. Klein andB. J. Briscoe,Proc. Roy. Soc. A365 (1979) 53.
R. A. W. Fraser andP. T. Gilmore,J. Polymer Sci., Polymer Symp. 63 (1978) 63.
P. T. Gilmore andR. L. Laurence, Proceedings of the International Union of Pure and Applied Chemistry Symposium on Macromolecules, Mainz, W. Germany, September, 1979, edited by I. Lüderwald and R. Weis, p. 1086.
F. Bueche, W. M. Cashin andP. Debye,J. Chem. Phys. 20 (1952) 1956.
S. P. Timoshenko andJ. N. Goodier, “Theory of Elasticity” 3rd edn (McGraw Hill Kogakusha Ltd, Tokyo, 1970) p. 412.
S. Krause, in “Polymer Blends” Vol. 1 (Academic Press, New York and London, 1978) Ch. 2.
J. Jelenik andR. G. Kirste,Markomol. Chem. 180 (1979) 2059.
N. G. McCrum, B. E. Read andJ. G. Williams, “Anelastic and Dielectric Effects in Polymeric Solids” (John Wiley & Sons, New York, 1976) 258.
D. W. McCall, D. C. Douglass andE. W. Anderson,J. Chem. Phys. 30 (1959) 771.
H. Koch andR. Kimmich, Proceedings of the International Union of Pure and Applied Chemistry Symposium on Macromolecules, Mainz, W. Germany, September, 1979 edited by I. Lüderwald and R. Weiss, p. 1078.
M. Doi andF. Edwards,J. Chem. Soc. (Faraday) II 74 (1978) 1789.
W. W. Graessley,J. Polymer Sci., Polymer Phys. Ed. 18 (1980) 27.
G. Schreyer, “Konstruieren mit Kunststoffen” Vol. II (Hanser-Verlag, München, 1972) p. 891.
R. G. Kirste, W. A. Kruse andK. Ibel,Polymer 16 (1975) 120.
D. W. Van Krevelen, “Properties of Polymers” (Elsevier, Amsterdam and New York, 1976).
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On leave from Department of Mechanical Engineering, Imperial College of Science and Technology, Exhibition Road, London, UK.
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Jud, K., Kausch, H.H. & Williams, J.G. Fracture mechanics studies of crack healing and welding of polymers. J Mater Sci 16, 204–210 (1981). https://doi.org/10.1007/BF00552073
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DOI: https://doi.org/10.1007/BF00552073