Copolyesters based on bibenzoic acids

H. Eliot Edling; Haoyu Liu; Hua Sun; Ryan J. Mondschein; David A. Schiraldi; Timothy E. Long; S. Richard Turner

doi:10.1016/j.polymer.2017.12.004

Copolyesters based on bibenzoic acids

H. Eliot Edling, Haoyu Liu, Hua Sun, Ryan J. Mondschein, David A. Schiraldi, Timothy E. Long, S. Richard Turner

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

13 Scopus citations

Abstract

Novel copolyester thermoplastics based on 4,4′-bibenzoate and 3,4′-bibenzoate moieties with ethylene glycol were synthesized via melt polycondensations. Crystallization behavior was modified by the additional incorporation of terephthalate or isophthalate units into the backbones. Copolyester compositions were verified by ¹H NMR spectroscopy and molecular weights were assessed using inherent viscosity (η_inh). Thermogravimetric analysis (TGA) showed single-step weight losses in the range of 360–400 °C. Differential scanning calorimetry (DSC) was used to determine melting points and glass transition temperatures over a wide range of copolyester compositions. Observation of thermal data was used to identify amorphous windows in composition ranges containing 3,4′BB and 4,4′BB moieties. Dynamic mechanical analysis (DMA) provided information about thermal transitions and sub-T g relaxations. Mechanical data were obtained using tensile testing to expand structure-property- morphology relationships. Permeability analysis helped to understand how monomer symmetry affects oxygen diffusivity and solubility in selected amorphous film and biaxially oriented copolyester samples.

Original language	English (US)
Pages (from-to)	120-130
Number of pages	11
Journal	Polymer
Volume	135
DOIs	https://doi.org/10.1016/j.polymer.2017.12.004
State	Published - Jan 17 2018
Externally published	Yes

Keywords

Acid modified copolyester
Biaxial orientation
Bibenzoate
Oxygen permeability
Polyester

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

Access to Document

10.1016/j.polymer.2017.12.004

Cite this

@article{fff556682e1b4aadad2c849dea3d53df,

title = "Copolyesters based on bibenzoic acids",

abstract = "Novel copolyester thermoplastics based on 4,4′-bibenzoate and 3,4′-bibenzoate moieties with ethylene glycol were synthesized via melt polycondensations. Crystallization behavior was modified by the additional incorporation of terephthalate or isophthalate units into the backbones. Copolyester compositions were verified by 1H NMR spectroscopy and molecular weights were assessed using inherent viscosity (ηinh). Thermogravimetric analysis (TGA) showed single-step weight losses in the range of 360–400 °C. Differential scanning calorimetry (DSC) was used to determine melting points and glass transition temperatures over a wide range of copolyester compositions. Observation of thermal data was used to identify amorphous windows in composition ranges containing 3,4′BB and 4,4′BB moieties. Dynamic mechanical analysis (DMA) provided information about thermal transitions and sub-T g relaxations. Mechanical data were obtained using tensile testing to expand structure-property- morphology relationships. Permeability analysis helped to understand how monomer symmetry affects oxygen diffusivity and solubility in selected amorphous film and biaxially oriented copolyester samples.",

keywords = "Acid modified copolyester, Biaxial orientation, Bibenzoate, Oxygen permeability, Polyester",

author = "Edling, {H. Eliot} and Haoyu Liu and Hua Sun and Mondschein, {Ryan J.} and Schiraldi, {David A.} and Long, {Timothy E.} and Turner, {S. Richard}",

note = "Funding Information: This work is supported by the Department of Chemistry and the Macromolecules Innovation Institute (MII) at Virginia Tech. The authors acknowledge Charles S. Carfagna Jr. of the Macromolecular Materials Discovery Center (MMDC) at Virginia Tech for help with thermal analysis. The authors thank Professor Timothy E. Long's research group at Virginia Tech for help with thermal and mechanical analysis and Professor Eric Baer's group at Case Western Reserve University for help with biaxial orientation. Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2018",

month = jan,

day = "17",

doi = "10.1016/j.polymer.2017.12.004",

language = "English (US)",

volume = "135",

pages = "120--130",

journal = "Polymer",

issn = "0032-3861",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Copolyesters based on bibenzoic acids

AU - Edling, H. Eliot

AU - Liu, Haoyu

AU - Sun, Hua

AU - Mondschein, Ryan J.

AU - Schiraldi, David A.

AU - Long, Timothy E.

AU - Turner, S. Richard

N1 - Funding Information: This work is supported by the Department of Chemistry and the Macromolecules Innovation Institute (MII) at Virginia Tech. The authors acknowledge Charles S. Carfagna Jr. of the Macromolecular Materials Discovery Center (MMDC) at Virginia Tech for help with thermal analysis. The authors thank Professor Timothy E. Long's research group at Virginia Tech for help with thermal and mechanical analysis and Professor Eric Baer's group at Case Western Reserve University for help with biaxial orientation. Publisher Copyright: © 2017 Elsevier Ltd

PY - 2018/1/17

Y1 - 2018/1/17

N2 - Novel copolyester thermoplastics based on 4,4′-bibenzoate and 3,4′-bibenzoate moieties with ethylene glycol were synthesized via melt polycondensations. Crystallization behavior was modified by the additional incorporation of terephthalate or isophthalate units into the backbones. Copolyester compositions were verified by 1H NMR spectroscopy and molecular weights were assessed using inherent viscosity (ηinh). Thermogravimetric analysis (TGA) showed single-step weight losses in the range of 360–400 °C. Differential scanning calorimetry (DSC) was used to determine melting points and glass transition temperatures over a wide range of copolyester compositions. Observation of thermal data was used to identify amorphous windows in composition ranges containing 3,4′BB and 4,4′BB moieties. Dynamic mechanical analysis (DMA) provided information about thermal transitions and sub-T g relaxations. Mechanical data were obtained using tensile testing to expand structure-property- morphology relationships. Permeability analysis helped to understand how monomer symmetry affects oxygen diffusivity and solubility in selected amorphous film and biaxially oriented copolyester samples.

AB - Novel copolyester thermoplastics based on 4,4′-bibenzoate and 3,4′-bibenzoate moieties with ethylene glycol were synthesized via melt polycondensations. Crystallization behavior was modified by the additional incorporation of terephthalate or isophthalate units into the backbones. Copolyester compositions were verified by 1H NMR spectroscopy and molecular weights were assessed using inherent viscosity (ηinh). Thermogravimetric analysis (TGA) showed single-step weight losses in the range of 360–400 °C. Differential scanning calorimetry (DSC) was used to determine melting points and glass transition temperatures over a wide range of copolyester compositions. Observation of thermal data was used to identify amorphous windows in composition ranges containing 3,4′BB and 4,4′BB moieties. Dynamic mechanical analysis (DMA) provided information about thermal transitions and sub-T g relaxations. Mechanical data were obtained using tensile testing to expand structure-property- morphology relationships. Permeability analysis helped to understand how monomer symmetry affects oxygen diffusivity and solubility in selected amorphous film and biaxially oriented copolyester samples.

KW - Acid modified copolyester

KW - Biaxial orientation

KW - Bibenzoate

KW - Oxygen permeability

KW - Polyester

UR - http://www.scopus.com/inward/record.url?scp=85042259629&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042259629&partnerID=8YFLogxK

U2 - 10.1016/j.polymer.2017.12.004

DO - 10.1016/j.polymer.2017.12.004

M3 - Article

AN - SCOPUS:85042259629

SN - 0032-3861

VL - 135

SP - 120

EP - 130

JO - Polymer

JF - Polymer

ER -

Copolyesters based on bibenzoic acids

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this