Abstract
The fracture energy and the critical strength of glassy polymers with molecular weight larger than the critical value for the onset of chain entanglements are proportional to the number of chain segments entangled about a unit plane. A new molecular model is presented to calculate the crossing density of these chain segments when the segment length is a stochastic variable. The crossing density depends on the mesh size of the entanglement network and the number of entanglement network strands per unit volume. Theoretical predictions of the variation of the fracture energy and strength with the molecular weight are compared with experimental results for various glassy polymers.
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References
A.G. Mikos and N.A Peppas, J. Chem. Phys., 88, 1337 (1988).
A.G. Mikos and N.A Peppas, J. Mater. Sci. Lett., 8, 833 (1989).
A.G. Mikos and N.A Peppas, Polymer, 30, 84 (1989).
A.G. Mikos and N.A Peppas, J. Polym. Sci., Polym. Phys. Ed., in press.
A.G. Mikos and N.A Peppas, Europhys. Lett., 6, 403 (1988).
Acknowledgement
This work was supported by a National Science Foundation grant (No. CBT-86-17719) and by a David Ross Fellowship to A.G.M.
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Mikos, A.G., Peppas, N.A. Fracture Energy and Critical Strength of High Molecular Weight Glassy Polymers. MRS Online Proceedings Library 214, 189–193 (1990). https://doi.org/10.1557/PROC-214-189
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DOI: https://doi.org/10.1557/PROC-214-189