Summary
The paper describes thermal and mechanical properties of a series of novel blends prepared using a two-stage process which invloved solution blending a specially-synthesised diacteylene-containing oligoester (DOE) with a semi-crystalline poly[ethylene-co-(vinyl acetate)] (EVA), followed by conversion of the DOE to a polydiacteylene-containing oligoester (cp-DOE) by in situ thermal cross-polymerisation during moulding. Moulded blends range from ductile to brittle materials and give intense Raman spectra in which the C≡C stretching band at ∼2100 cm-1 is well-defined and shifts to lower wavenumber when the blends are subjected to tensile stress. For each blend composition, shifts in wavenumber were used to determine local stress in the cp-DOE component independently of the overall stress applied to blend.
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References
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Lovell, P.A., Stanford, J.L., Wang, Y.F. et al. Structure-property relationships in novel polydiacetylene-containing oligoester: Polyolefin blends. Polymer Bulletin 30, 347–352 (1993). https://doi.org/10.1007/BF00343071
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DOI: https://doi.org/10.1007/BF00343071