Structure-Microhardness Relationship in Semi-interpenetrating Polymer Networks

Two series of single-phase, semi-interpenetrating polymer networks (semi-IPNs) based on the same linear polyurethane (LPU) and two different heterocyclic polymer networks (HPNs), respectively, were characterized by the room temperature microhardness H measurement. It is shown that the H value linear...

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Bibliographic Details
Published in:Journal of macromolecular science. Physics 2000-03, Vol.39 (2), p.131-141
Main Authors: CALLEJA, F. J. BALTÁ, PRIVALKO, E. G., FAINLEIB, A. M., SHANTALII, T. A., PRIVALKO, V. P.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Mechanical properties
Organic polymers
Physicochemistry of polymers
Properties and characterization
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Summary:Two series of single-phase, semi-interpenetrating polymer networks (semi-IPNs) based on the same linear polyurethane (LPU) and two different heterocyclic polymer networks (HPNs), respectively, were characterized by the room temperature microhardness H measurement. It is shown that the H value linearly increases with both the mass content of the stiffer component (HPN) and the glass transition temperature of a semi-IPN. The latter dependence can be justified on the assumption that the excess enthalpy of the glass with respect to a hypothetical melt state is a measure of the yield strength of the glassy quasi lattice.
ISSN:0022-2348
1525-609X
DOI:10.1081/MB-100100376