Effect of pendent phenyl and bis-phthalazinone moieties on the properties of N-heterocyclic poly(aryl ether ketone ketone)s

Liu, Qian; Zhang, Shouhai; Wang, Zhaoqi; Chen, Yuning; Jian, Xigao

doi:10.1016/j.polymer.2020.122525

Cited by 20 publications

(9 citation statements)

References 59 publications

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“…In order to verify the above conjecture, whether T2MP20 and T2MP0 also conform to the above rules, the amorphous accumulating cell models of T2MP100-T2MP0 polyesters were constructed via computer software Materials Studio simulation which referred to previous literatures. [29][30][31] The parameters are set the same for all simulations. The simulation results of T2MP100-T2MP0 are shown in Table 5 and the amorphous accumulating cell models are displayed in Figure 7.…”

Section: Positron Annihilation Lifetime Measurementsmentioning

confidence: 99%

Design, synthesis and characterization of high refractive index aromatic polyesters containing fluorene and thioether groups

Wu,

Wang,

Jiang

et al. 2024

High Performance Polymers

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9,9-bis(4-hydroxyphenyl)fluorene (BPF) is a highly structurally symmetric bisphenol with excellent optical properties of low birefringence and high refractive index, however, the glass transition temperature ( Tg) of its polyester is high ( Tg>300°C), which makes it difficult to be thermally processed and limits its application. On the other hand, 4,4′-Thiobis (2-methylphenol) (T2MP) has a flexible thioether group, its introduction not only brings high refractive index, but also can appropriately reduce the Tg of the polymer. Therefore, by combining the advantages of both of them, we prepared aromatic polyesters with high refractive index and stabilization. This study provides a route that can appropriately reduce Tg without loss of refractive index.

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Section: Positron Annihilation Lifetime Measurementsmentioning

confidence: 99%

Design, synthesis and characterization of high refractive index aromatic polyesters containing fluorene and thioether groups

Wu,

Wang,

Jiang

et al. 2024

High Performance Polymers

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“…In order to better verify this result, the amorphous accumulating cell models of PEK-C and FPAE-1 were established via computer simulation with reference to previous works. 22,23 The parameters, such as free volume and fractional free volume (FFV), were gained through the Atom Volume and Surfaces Tool of Materials Studio 2020, and displayed in Table 4 and the amorphous accumulating cell models were shown in Figure 9. The two methods have different principles, thus the final results were different.…”

Section: Transparencymentioning

confidence: 99%

Synthesis and characterization of amorphous fluorinated polyarylether prepared from phenolphthalein and decafluorobiphenyl

Wang

et al. 2023

J of Applied Polymer Sci

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Poly(arylene ether)s with different molecular weights were synthesized via a two‐step nucleophilic substitution polymerization by adjusting reaction parameters based on phenolphthalein (PHT) and decafluorobiphenyl (DFBP). The chemical structures and properties were identified by Fourier transform infrared, NMR, gel permeation chromatography, differential scanning calorimetry, thermogravimetric analysis, dynamic thermomechanical analysis (DMA), and so forth. The number‐average molecular weight (Mn) of the resulting polymers was in the range of 23.0–49.3KDa. FPAEs (polyarylether including perfluorobiphenyl structure) were demonstrated to have outstanding thermo‐resistance with 5% weight loss temperature of about 482–520°C (N2) and high‐glass transition temperature (about 240–250°C). FPAEs can be dissolved in conventional organic solvents, possessing excellent film‐forming properties. The good mechanical properties of FPAEs were confirmed by the DMA data, with Young's modulus greater than 1.0 Gpa and modulus retention rate at 230°C >67%. FPAEs also showed good hydrophobicity and low‐water absorption, in particular, FPAE‐1 (FPAE‐1‐5 were the polycondensation products of PHT and DFBP, just the polymerization conditions were slightly modified) exhibited favorable dielectric properties: at 1 MHz, the dielectric constant and dielectric loss was 2.58 and 0.0053, respectively. Thus, FPAE‐1 has broad prospective applications in microelectronic devices and communication technology.

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“…To explain this phenomenon, we constructed the amorphous accumulation cell model of PEK-Inx and PEK-BPFx. The amorphous accumulating cell models of PEK-Inx and PEK-BPFx were constructed using Materials Studio software referring to the previous literature [31][32][33]. The results are listed in Table 6.…”

Section: Dielectric Propertiesmentioning

confidence: 99%

“…In summary, the PAEK that we designed with different numbers of methylene groups had high potential utility for microelectronic devices. The amorphous accumulating cell models of PEK-Inx and PEK-BPFx were constructed using Materials Studio software referring to the previous literature [31][32][33]. The results are listed in Table 6.…”

Section: Dielectric Propertiesmentioning

confidence: 99%

Amorphous Poly (Aryl Ether Ketones) Containing Methylene Groups with Excellent Thermal Resistance, Dielectric Properties and Mechanical Performance

Jiang,

Wang,

Sun

et al. 2023

Polymers

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Low-dielectric constant polymers are widely used in various microelectronic materials. With the development of 5G communication technology, there is an urgent need for polymer materials with low dielectric constant at high frequency, good thermal resistance, and mechanical properties. In this study, four novel poly (aryl ether ketone) (PAEK) containing different numbers of methylene groups were synthesized via nucleophilic polycondensation reaction. At 10 GHz, these polymer films exhibit excellent dielectric properties with dielectric constants as low as 2.76. The relationship between the dielectric constant and the number of methylene groups is illustrated by constructing the amorphous accumulation cell model. In addition, methylene groups provided the polymer with favorable mechanical performance, including Young’s modulus in the range of 2.17–2.21 GPa, the tensile strength from 82.0 to 88.5 MPa and the elongation at the break achieved 7.94%, respectively. Simultaneously, the polymer maintains good thermal resistance with a glass transition temperature (Tg) reaching 216 °C. The result indicates that the obtained novel PAEK is potentially valuable in the field of high-frequency communications.

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Effect of pendent phenyl and bis-phthalazinone moieties on the properties of N-heterocyclic poly(aryl ether ketone ketone)s

Cited by 20 publications

References 59 publications

Design, synthesis and characterization of high refractive index aromatic polyesters containing fluorene and thioether groups

Design, synthesis and characterization of high refractive index aromatic polyesters containing fluorene and thioether groups

Synthesis and characterization of amorphous fluorinated polyarylether prepared from phenolphthalein and decafluorobiphenyl

Amorphous Poly (Aryl Ether Ketones) Containing Methylene Groups with Excellent Thermal Resistance, Dielectric Properties and Mechanical Performance

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