TY - JOUR
T1 - Synthesis and Characterization of Decahydronaphthalene-Containing Polyesters
AU - Dennis, Joseph M.
AU - Enokida, Joshua S.
AU - Long, Timothy Edward
PY - 2015/12/22
Y1 - 2015/12/22
N2 - Melt polycondensation of decahydronaphthalate dimethyl ester with various diols enabled the synthesis of novel polyesters containing hydrogenated naphthalene rings. Decahydronaphthalene-containing polyesters demonstrated thermal stabilities above 350°C, and compression molding provided ductile, optically clear films. 1H NMR spectroscopy confirmed transesterification, and intrinsic viscosity measurements verified high molecular weights. Differential scanning calorimetry and dynamic mechanical analysis revealed structure-property relationships for glass transition temperatures (Tg) and β-relaxations. Melt rheology examined the effect of chemical structure on flow behavior, and time-temperature superposition revealed two distinct transitions, which correlated to the Tg and chain disentanglement. Furthermore, evaluation of the fractional free volume and flow activation energies suggested a structural dependence associated with regularity along the polymer backbone.
AB - Melt polycondensation of decahydronaphthalate dimethyl ester with various diols enabled the synthesis of novel polyesters containing hydrogenated naphthalene rings. Decahydronaphthalene-containing polyesters demonstrated thermal stabilities above 350°C, and compression molding provided ductile, optically clear films. 1H NMR spectroscopy confirmed transesterification, and intrinsic viscosity measurements verified high molecular weights. Differential scanning calorimetry and dynamic mechanical analysis revealed structure-property relationships for glass transition temperatures (Tg) and β-relaxations. Melt rheology examined the effect of chemical structure on flow behavior, and time-temperature superposition revealed two distinct transitions, which correlated to the Tg and chain disentanglement. Furthermore, evaluation of the fractional free volume and flow activation energies suggested a structural dependence associated with regularity along the polymer backbone.
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U2 - 10.1021/acs.macromol.5b02288
DO - 10.1021/acs.macromol.5b02288
M3 - Article
AN - SCOPUS:84951848086
SN - 0024-9297
VL - 48
SP - 8733
EP - 8737
JO - Macromolecules
JF - Macromolecules
IS - 24
ER -