Abstract
The importance of energetics in both the bond-forming and the bond-breaking processes is stressed. Surface free energy and other energetic terms related to the bond-breaking process are discussed in detail. Basic fracture mechanics concepts are introduced as a framework in defining several important energetic terms. Effective fracture surface energy, Γ, fracture energy, Gc, and fracture toughness, Kc, are clearly defined. Three parameters affecting the energetic terms discussed in this paper are molecular weight, crack speed and molecular orientation of polymers. Glassy polymers are compared with metals and non-metals by the fracture energies.
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© 1983 Plenum Press, New York
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Lee, LH. (1983). Surface Free Energies and Fracture Surface Energies of Glassy Polymers. In: Mittal, K.L. (eds) Physicochemical Aspects of Polymer Surfaces. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7584-9_30
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DOI: https://doi.org/10.1007/978-1-4615-7584-9_30
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