Influence of cyclobutane segments in cycloaliphatic decahydronaphthalene-containing copolyesters

Joseph M. Dennis, Nicole A. Fazekas, Ryan J. Mondschein, Ramesh Ramakrishnan, Sergei Nazarenko, Timothy Edward Long

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Melt transesterification polycondensation enabled the incorporation of rigid, cycloaliphatic diols (2,2,4,4-tetramethylcyclobutane-1,3-diol) into decahydronaphthalene-containing copolyesters, which resulted in amorphous, optically clear materials. Glass transition temperatures approached 155°C and followed predictable trends using the Fox equation for randomly sequenced copolymers. Dynamic mechanical analysis identified several low-temperature relaxations attributed to the complex motions of the decahydronaphthalate and cyclohexyl rings within the polymer backbone. Furthermore, incorporating cyclobutane rings suppressed the low-temperature local mobility, revealing a strong structural dependence on these relaxations. The rheological simplicity of these nonassociating chains permitted analysis over a large frequency window using time-temperature superposition. As a result, the characteristic relaxation times provided insight into chain dynamics and the propensity for chain entanglements. Finally, positron annihilation lifetime spectroscopy probed hole-free volume and reinforced the trends observed with oxygen permeability measurements.

Original languageEnglish
Pages (from-to)750-756
Number of pages7
JournalHigh Performance Polymers
Volume29
Issue number6
DOIs
Publication statusPublished - 2017 Aug 1
Externally publishedYes

Fingerprint

Cyclobutanes
Positron annihilation
Transesterification
Free volume
Dynamic mechanical analysis
Polycondensation
Relaxation time
Temperature
Polymers
Copolymers
Spectroscopy
Oxygen
decalin

Keywords

  • BPA-replacement
  • free volume
  • naphthalene
  • PALS
  • Polyester

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

Dennis, J. M., Fazekas, N. A., Mondschein, R. J., Ramakrishnan, R., Nazarenko, S., & Long, T. E. (2017). Influence of cyclobutane segments in cycloaliphatic decahydronaphthalene-containing copolyesters. High Performance Polymers, 29(6), 750-756. https://doi.org/10.1177/0954008317708606

Influence of cyclobutane segments in cycloaliphatic decahydronaphthalene-containing copolyesters. / Dennis, Joseph M.; Fazekas, Nicole A.; Mondschein, Ryan J.; Ramakrishnan, Ramesh; Nazarenko, Sergei; Long, Timothy Edward.

In: High Performance Polymers, Vol. 29, No. 6, 01.08.2017, p. 750-756.

Research output: Contribution to journalArticle

Dennis, JM, Fazekas, NA, Mondschein, RJ, Ramakrishnan, R, Nazarenko, S & Long, TE 2017, 'Influence of cyclobutane segments in cycloaliphatic decahydronaphthalene-containing copolyesters', High Performance Polymers, vol. 29, no. 6, pp. 750-756. https://doi.org/10.1177/0954008317708606
Dennis, Joseph M. ; Fazekas, Nicole A. ; Mondschein, Ryan J. ; Ramakrishnan, Ramesh ; Nazarenko, Sergei ; Long, Timothy Edward. / Influence of cyclobutane segments in cycloaliphatic decahydronaphthalene-containing copolyesters. In: High Performance Polymers. 2017 ; Vol. 29, No. 6. pp. 750-756.
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