Synthesis and Characterization of Decahydronaphthalene-Containing Polyesters

Joseph M. Dennis; Joshua S. Enokida; Timothy Edward Long

doi:10.1021/acs.macromol.5b02288

Synthesis and Characterization of Decahydronaphthalene-Containing Polyesters

Joseph M. Dennis, Joshua S. Enokida, Timothy Edward Long^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

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 (T_g) 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 T_g 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.

Original language	English
Pages (from-to)	8733-8737
Number of pages	5
Journal	Macromolecules
Volume	48
Issue number	24
DOIs	https://doi.org/10.1021/acs.macromol.5b02288
Publication status	Published - 2015 Dec 22
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Materials Chemistry
Polymers and Plastics
Inorganic Chemistry

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10.1021/acs.macromol.5b02288

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title = "Synthesis and Characterization of Decahydronaphthalene-Containing Polyesters",

abstract = "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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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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Synthesis and Characterization of Decahydronaphthalene-Containing Polyesters

Abstract

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