Journal
POLYMER DEGRADATION AND STABILITY
Volume 74, Issue 1, Pages 87-96Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0141-3910(01)00105-7
Keywords
infrared linear dichroism; dynamic FTIR; polymer aging
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Static and dynamic infrared linear dichroism data have been used to supply additional insight into changes in tensile properties as a consequence of hydrolytic degradation of a segmented poly(ester urethane). Unaged material responds to tensile deformation with the soft (polyester) segments supplying the elasticity and the hard (polyurethane) segments supplying strength. Upon hydrolytic degradation, the static and dynamic data indicate altered orientational responses at the molecular-level, which are interpreted as resulting from cleavage of the soft segment chains and altered hydrogen-bonding interactions for both segments. (C) 2001 Elsevier Science Ltd. All rights reserved.
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