Synthesis and characterization of phosphonated Poly(ethylene terephthalate) ionomers

Lin Ju; Juan Pretelt; Tianran Chen; Joseph M. Dennis; Katherine V. Heifferon; Donald G. Baird; Timothy E. Long; Robert B. Moore

doi:10.1016/j.polymer.2018.07.065

Synthesis and characterization of phosphonated Poly(ethylene terephthalate) ionomers

Lin Ju, Juan Pretelt, Tianran Chen, Joseph M. Dennis, Katherine V. Heifferon, Donald G. Baird, Timothy E. Long, Robert B. Moore

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

11 Scopus citations

Abstract

A more efficient route for the synthesis of phosphonated dimethyl isophthalate, disodium salt is shown to provide a significantly higher yield (42%), in contrast to a previously reported yield (15%). This higher yield enabled the synthesis of phosphonated poly(ethylene terephthalate) (PPET) ionomers using conventional melt polycondensation with ethylene glycol and dimethyl terephthalate. The physical properties of these phosphonated PET ionomers (Na⁺-PPET) were characterized using differential scanning calorimetry (DSC), melt rheology, and tensile testing. DSC analysis showed that the crystalline melting temperatures, crystallization temperatures, degrees of crystallinity, and crystallization rates decreased with increasing ionic content. Melt rheology confirmed the existence of physical crosslinks in Na⁺-PPET ionomers, as indicated by a crossover of the storage and loss moduli, attributed to strong electrostatic associations between phosphonated units on the polymer chains. Tensile tests of the Na⁺-PPET samples showed enhanced Young's modulus and yield stress compared to pure PET.

Original language	English (US)
Pages (from-to)	154-163
Number of pages	10
Journal	Polymer
Volume	151
DOIs	https://doi.org/10.1016/j.polymer.2018.07.065
State	Published - Aug 29 2018
Externally published	Yes

Keywords

Ionomer characterization
Multivalent ionomer
Phosphonated PET
Polyester ionomer

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2018.07.065

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title = "Synthesis and characterization of phosphonated Poly(ethylene terephthalate) ionomers",

abstract = "A more efficient route for the synthesis of phosphonated dimethyl isophthalate, disodium salt is shown to provide a significantly higher yield (42%), in contrast to a previously reported yield (15%). This higher yield enabled the synthesis of phosphonated poly(ethylene terephthalate) (PPET) ionomers using conventional melt polycondensation with ethylene glycol and dimethyl terephthalate. The physical properties of these phosphonated PET ionomers (Na+-PPET) were characterized using differential scanning calorimetry (DSC), melt rheology, and tensile testing. DSC analysis showed that the crystalline melting temperatures, crystallization temperatures, degrees of crystallinity, and crystallization rates decreased with increasing ionic content. Melt rheology confirmed the existence of physical crosslinks in Na+-PPET ionomers, as indicated by a crossover of the storage and loss moduli, attributed to strong electrostatic associations between phosphonated units on the polymer chains. Tensile tests of the Na+-PPET samples showed enhanced Young's modulus and yield stress compared to pure PET.",

keywords = "Ionomer characterization, Multivalent ionomer, Phosphonated PET, Polyester ionomer",

author = "Lin Ju and Juan Pretelt and Tianran Chen and Dennis, {Joseph M.} and Heifferon, {Katherine V.} and Baird, {Donald G.} and Long, {Timothy E.} and Moore, {Robert B.}",

year = "2018",

month = aug,

day = "29",

doi = "10.1016/j.polymer.2018.07.065",

language = "English (US)",

volume = "151",

pages = "154--163",

journal = "Polymer",

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T1 - Synthesis and characterization of phosphonated Poly(ethylene terephthalate) ionomers

AU - Ju, Lin

AU - Pretelt, Juan

AU - Chen, Tianran

AU - Dennis, Joseph M.

AU - Heifferon, Katherine V.

AU - Baird, Donald G.

AU - Long, Timothy E.

AU - Moore, Robert B.

PY - 2018/8/29

Y1 - 2018/8/29

N2 - A more efficient route for the synthesis of phosphonated dimethyl isophthalate, disodium salt is shown to provide a significantly higher yield (42%), in contrast to a previously reported yield (15%). This higher yield enabled the synthesis of phosphonated poly(ethylene terephthalate) (PPET) ionomers using conventional melt polycondensation with ethylene glycol and dimethyl terephthalate. The physical properties of these phosphonated PET ionomers (Na+-PPET) were characterized using differential scanning calorimetry (DSC), melt rheology, and tensile testing. DSC analysis showed that the crystalline melting temperatures, crystallization temperatures, degrees of crystallinity, and crystallization rates decreased with increasing ionic content. Melt rheology confirmed the existence of physical crosslinks in Na+-PPET ionomers, as indicated by a crossover of the storage and loss moduli, attributed to strong electrostatic associations between phosphonated units on the polymer chains. Tensile tests of the Na+-PPET samples showed enhanced Young's modulus and yield stress compared to pure PET.

AB - A more efficient route for the synthesis of phosphonated dimethyl isophthalate, disodium salt is shown to provide a significantly higher yield (42%), in contrast to a previously reported yield (15%). This higher yield enabled the synthesis of phosphonated poly(ethylene terephthalate) (PPET) ionomers using conventional melt polycondensation with ethylene glycol and dimethyl terephthalate. The physical properties of these phosphonated PET ionomers (Na+-PPET) were characterized using differential scanning calorimetry (DSC), melt rheology, and tensile testing. DSC analysis showed that the crystalline melting temperatures, crystallization temperatures, degrees of crystallinity, and crystallization rates decreased with increasing ionic content. Melt rheology confirmed the existence of physical crosslinks in Na+-PPET ionomers, as indicated by a crossover of the storage and loss moduli, attributed to strong electrostatic associations between phosphonated units on the polymer chains. Tensile tests of the Na+-PPET samples showed enhanced Young's modulus and yield stress compared to pure PET.

KW - Ionomer characterization

KW - Multivalent ionomer

KW - Phosphonated PET

KW - Polyester ionomer

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JO - Polymer

JF - Polymer

ER -

Synthesis and characterization of phosphonated Poly(ethylene terephthalate) ionomers

Abstract

Keywords

ASJC Scopus subject areas

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