Synthesis and characterization of new fluorinated aromatic polyesters containing trifluoromethylphenoxy pendant groups

Huang, Zhengkai; Pei, Xueliang; Wu, Ting; Sheng, Shou‐Ri; Lin, Song; Song, Chen

doi:10.1002/app.32809

Cited by 10 publications

(2 citation statements)

References 33 publications

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“…To overcome these shortcomings, researchers have developed various approaches to obtain thermally stable and organic-soluble fully aromatic polyesters. These approaches included the introduction of bulky pendant groups, − nonsymmetric groups, − hyperbranched structure, trifluoromethyl groups, − functional groups, and flexible chains into the polymer backbone and so on.…”

Section: Introductionmentioning

confidence: 99%

Effects of Thioether Content on the Solubility and Thermal Properties of Aromatic Polyesters

Zhang

Xing

et al. 2013

Ind. Eng. Chem. Res.

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Two kinds of aromatic polyesters containing thioether units had been prepared through the reaction of 4,4′-thiodibenzoyl chloride (T-DC) (or 4,4′-bis(4-chloroformylphenylthio)benzene (BPBDC)) and 1,1-bis(4-hydroxyphenyl)-1-phenylethane (BHPPE) by the method of interfacial polycondensation. These polyesters showed good solubility, and could afford tough films with tensile strengths of 103.6–108.3 MPa. The glass transition temperature (T g) of these polyesters ranged from 189.8 to 235.6 °C and initial degradation temperatures (T d) were 450–454 °C. The activation energies of degradation were in range of 156.6–160.3 KJ/mol. The limiting oxygen indexes (LOIs) of these polyesters ranged from 37 to 39, and UL-94 V-0 rating could achieve via this approach. The thermal degradation kinetics and thermal pyrolysis mechanism of these polyesters was studied by thermogravimetric analysis and Py-GC/MS analysis, respectively.

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Section: Introductionmentioning

confidence: 99%

Effects of Thioether Content on the Solubility and Thermal Properties of Aromatic Polyesters

Zhang

Xing

et al. 2013

Ind. Eng. Chem. Res.

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“…A number of fluorinated polymers of different types, including tetrafluoroethylene- and vinylidenefluoride-based polymers, acrylates/methacrylates, polyurethanes, polyesters, polyethers, and polyamides have been synthesized by radical polymerization and polycondensation. − ,− The fluorinated polymers exhibit a range of outstanding properties, including chemical resistance, thermal and photochemical stability, and low-reflective index, and low surface energy/adhesion. ,, The polymers also possess good mechanical properties; however, with a few exceptions (e.g., PTFE and polyvinylidenefluoride), the higher cost of these polymers and/or their mechanical properties often prevents their widespread applications as bulk materials in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Toward a Long-Chain Perfluoroalkyl Replacement: Water and Oil Repellency of Polyethylene Terephthalate (PET) Films Modified with Perfluoropolyether-Based Polyesters

Demir

Wei

Nitta

et al. 2017

ACS Appl. Mater. Interfaces

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Original perfluoropolyethers (PFPE)-based oligomeric polyesters (FOPs) of different macromolecular architecture were synthesized via polycondensation as low surface energy additives to engineering thermoplastics. The oligomers do not contain long-chain perfluoroalkyl segments, which are known to yield environmentally unsafe perfluoroalkyl carboxylic acids. To improve the compatibility of the materials with polyethylene terephthalate (PET) we introduced isophthalate segments into the polyesters and targeted the synthesis of lower molecular weight oligomeric macromolecules. The surface properties such as morphology, composition, and wettability of PET/FOP films fabricated from solution were investigated using atomic force microscopy, X-ray photoelectron spectroscopy, and contact angle measurements. It was demonstrated that FOPs, when added to PET film, readily migrate to the film surface and bring significant water and oil repellency to the thermoplastic boundary. We have established that the wettability of PET/FOP films depends on three main parameters: (i) end-groups of fluorinated polyesters, (ii) the concentration of fluorinated polyesters in the films, and (iii) equilibration via annealing. The most effective water/oil repellency FOP has two CF-PFPE-tails. The addition of this oligomeric polyester to PET allows (even at relatively low concentrations) reaching a level of oil repellency and surface energy comparable to that of polytetrafluorethylene (PTFE/Teflon). Therefore, the materials can be considered suitable replacements for additives containing long-chain perfluoroalkyl substances.

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Study on the synthesis and properties of a new fluorine‐containing copolyarylate

Wang,

Long,

Wang

et al. 2024

J of Applied Polymer Sci

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A range of new fluorine‐containing copolyarylates were successfully produced through interfacial polymerization using hexafluorobisphenol A (BPAF) featuring a symmetric trifluoromethyl group structure, bisphenol B (BPB), and two acyl chloride monomers as raw materials. The results indicated that the synthesized amorphous copolyarylates exhibited good solubility, with number average molecular weights (Mn) of 19,000–44,000 g/mol, weight average molecular weights (Mw) of 66,000–159,000 g/mol, and intrinsic viscosities of 0.66–1.19 dL/g. The thermal stability of copolyarylates increased with the increase of BPAF monomer content (0~100%), which was manifested by the linear increase of glass transition temperature (Tg) from 201.6 to 237.1°C, and the increase of 5% thermogravimetric weight loss temperature (T5%) from 474.1 to 491.5°C. The tensile strength of copolyarylates ranged from 52.63 to 59.93 MPa, the tensile modulus ranged from 1102.08 to 1502.84 MPa, and the elongation at break ranged from 32.0 to 75.5%. In addition, the copolyarylates had good dielectric properties with a dielectric constant of 2.58–3.75 at 107 Hz and a dielectric loss tangent of 0.021–0.028.

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Synthesis and characterization of new fluorinated aromatic polyesters containing trifluoromethylphenoxy pendant groups

Cited by 10 publications

References 33 publications

Effects of Thioether Content on the Solubility and Thermal Properties of Aromatic Polyesters

Effects of Thioether Content on the Solubility and Thermal Properties of Aromatic Polyesters

Toward a Long-Chain Perfluoroalkyl Replacement: Water and Oil Repellency of Polyethylene Terephthalate (PET) Films Modified with Perfluoropolyether-Based Polyesters

Study on the synthesis and properties of a new fluorine‐containing copolyarylate

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