Abstract
Block copolymers form a new class of molecular composite materials by the phase separation of incompatible hard and soft segments which form their macro-molecular structure. Thermoplastic elastomers where the soft segments form the continuous phase have been extensively investigated by means of an adsorption-interdiffusion (A-I) model for the interfacial phase which bonds the hard and soft phases. The molecular structure and rheological activity of the interfacial phase in thermoplastic elastomer block copolymers is shown to play a dominant role in nonlinear viscoelastic response, mechanical hysteresis and energy absorption. Creation of elastomeric microphases in epoxy structural adhesives has been recently identified with in situ block copolymerization between carboxy terminated nitrile (CTBN) rubber and the diepoxide. In this case, the soft phase is discontinuous and acts as a toughening agent for the hard epoxy continuum. The A-I model is shown applicable to describing the rheology and fracture properties of the CTBN modified epoxy adhesives. The specific advantages of developing block copolymers as elastomeric or structural adhesives is discussed in terms of molecular design factors such as composition, block structure and molecular weight. Adhesion properties unique to block copolymer adhesives are discussed and summarized.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
J. T. Harlan, Jr., “Block Copolymer Adhesive Compositions and Articles Prepared Therefrom”, U.S. Patent 3,239,478, March 1965.
G. Holden, E. T. Bishop and N. R. Legge, J. Poly. Sci., Symposia 26, 37 (1969).
D. H. Kaelble, Trans. Soc. Rheol. 15;2, 235 (1971).
J. Moacanin, G. Holden and N. W. Tscheogl, Eds., Block Copolymers, Interscience, New York, 1969.
S. L. Aggarwal, Ed., Block Polymers, Plenum, New York (1970).
G. E. Molau, Ed., Colloidal and Morphological Behavior of Block and Graft Copolymers, Plenum, New York (1971).
G. M. Estes, R. W. Seymour, S. J. Borchert and S. L. Cooper, Ibid., pp. 159-171.
S. L. Samuels and G. L. Wilkes, J. Poly. Sci., Symposia 43, 149–178 (1973).
W. H. Buck, R. J. Cella, Jr., E. K. Gladding and J. R. Wolfe, Jr., Ibid., 48, 47–60 (1974).
J. N. Sultan, R. C. Laible and F. G. McGarry, Appl. Polymer Symposia 16, 127 (1971).
N. K. Kalfoglou and H. L. Williams, J. Appl. Poly. Sci. 17, 1377 (1973).
W. D. Bascom, R. L. Cottingon, R. L. Jones and P. Peyser, “The Fracture of Epoxy and Elastomer-Epoxy Polymers in Bulk and as Adhesives”, A.C.S. Coatings and Plastics Preprints 34(2), 300–308 (1974).
T. L. Smith and R. A. Dickie, J. Poly. Sci., Symposia 26, 163 (1969).
J. F. Beecher, L. Marker, R. D. Bradford and S. L. Aggarwal, Ibid., 26, 117 (1969).
D. H. Kaelble and E. H. Cirlin, Ibid., 43, 131 (1973).
D. H. Kaelble, E.H. Cirlin and M. Shen, in Colloidal and Morphological Behavior of Block and Graft Copolymers, Ed., G. E. Molau, Plenum, New York, p. 307 (1971).
R. P. Kambour, Macromolecular Rev. 7, 1–154 (1973).
M. Toyama and T. Ito, Polymer Plastic Technology and Engineering, Ed., L. Naturman, Vol. 2, Dekker, New York, pp. 161–229 (1974).
R. E. Keith, Handbook of Adhesive Bonding, Ed., C. V. Cagle, McGraw Hill, New York, Chap. 12 (1973).
T. L. Smith, J. Poly. Sci., Polymer Phys., 12, 1825 (1974).
D. H. Kaelble, Epoxy Resins, Ed., C. A. May and Y. Tanaka, Dekker, New York, Chap. 5 (1973).
D. H. Kaelble, L. W. Crane and P. J. Dynes, “Morphology and Thermomechanical Response of CTBN Modified Epoxy Resins”, to be published.
D. H. Kaelble and E. H. Cirlin, J. Poly. Sci., Part C, 35, 79 (1971).
T. O. Craig, J. Poly. Sci., Poly. Chem. 12, 2105 (1974).
V. A. Pattison, R. R. Hindersinn and W. T. Schwartz, J. Appl. Poly. Sci. 18, 2763 (1974).
H. L. Frisch, D. Klempner and K. C. Frisch, J. Poly, Sci., Part B, 7, 775 (1969).
K. C. Frisch, D. Klempner, S. K. Mukherjee and H. L. Frisch, J. Appl. Poly. Sci. 18, 689.
A. Nashay and L. M. Robeson, J. Poly. Sci., Poly. Chem. 12, 689 (1974).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1975 Plenum Press, New York
About this chapter
Cite this chapter
Kaelble, D.H. (1975). Block Copolymers as Adhesives. In: Lee, LH. (eds) Adhesion Science and Technology. Polymer Science and Technology, vol 9. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-8201-4_14
Download citation
DOI: https://doi.org/10.1007/978-1-4615-8201-4_14
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4615-8203-8
Online ISBN: 978-1-4615-8201-4
eBook Packages: Springer Book Archive