Abstract
A series of PMMA samples of different molecular weights and degrees of copolymerisation have been tested for their crack-healing behavior. Slightly above Tg, a diffusional interpenetration of chain segments takes place. The fracture toughness in the plane of the interpenetrated interface was measured in short- and longtime experiments. After very short penetration times of only 5 min, full material resistance was regained in short-time experiments, whereas the long-time properties were not restored. A qualitative explanation of these effects, based on structural parameters, is given.
Similar content being viewed by others
References
H.H. KAUSCH, Polymer Fracture, Berlin, Heidelberg, New York: Springer 1978, a) pg. 260, b) pg. 218, c) pg. 269, d) pg. 169
J.O. OUTWATER, D.J. GERRY, J. Adhesion 1, 290–299 (1969)
E. BISTER, Dissertation, Untersuchungen über die Autohäsion und das Bruchverhalten von Polymeren, Technische Universität Clausthal 1977
R.P. WOOL, Crack Healing in Polymers, Int. Conf. on Adhesion and Adsorption of Polymers, Hawaii 1979
H.H. KAUSCH, 4th International Conference on Deformation, Yield and Fracture of Polymers, Cambridge, 2-5.4.1979
H.H. KAUSCH, K. JUD, Mechanical Studies of the Interpenetration of Chain Molecules at Interfaces, Proceedings of the IUPAC, 26th International Symposium on Macromolecules, Mainz, 17–21.9.1979
J.G. WILLIAMS, Advances in Polymer Science, 27, Linear Fracture Mechanics, Berlin, Heidelberg, New York: Springer 1978
W.F. BROWN, J.E. SRAWLEY, ASTM Special Technical Publication No. 410, Plain Strain Crack Toughness Testing of High Strength Metallic Mat.
Collection IRSID, OTUA, La Rupture des Aciers 2, La Mécanique de la Rupture (1978)
F. BUECHE, J. Chem. Phys. 20/2, 1959–1964 (1952)
P.G. DE GENNES, J. Chem. Phys. 55/2, 572–579 (1971)
S.F. EDWARDS, G.W.V. GRANT, J. Physics A, Math., Nucl. Gen., Vol. 6, August 1973, 1169–1185
J. KLEIN, B.J. BRISCOE, Proc. Royal Soc. London A. 365, 53–73 (1979)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Jud, K., Kausch, H.H. Load transfer through chain molecules after interpenetration at interfaces. Polymer Bulletin 1, 697–707 (1979). https://doi.org/10.1007/BF00255445
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00255445