Side grafting tertiary amine in polyaryl ether sulfone membranes for reversible-multiple separations

Yan, Guangming; Lü, Heng; Yuan, Shushan; Deng, Xin; Zhu, Junyong; Gang, Zhang

doi:10.1016/j.memsci.2023.121641

Cited by 4 publications

(3 citation statements)

References 37 publications

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“…As a result, they find wide-ranging applications in medical devices, aviation automobiles, electronic, and electrical application and other fields. [22][23][24][25] The introduction of a large nonplanar side groups on the polymer backbone can increase the distance between the molecular chain and destroy the symmetry and regularity of the molecular structure. This, in turn, increases the free volume and achieve the purpose of reducing the dielectric constant.…”

Section: Introductionmentioning

confidence: 99%

“…As one of the representatives of high‐performance polymers, polyaryl ether materials have the advantages of high‐temperature resistance, acid and alkali resistance, high strength and toughness, and low water absorption etc. As a result, they find wide‐ranging applications in medical devices, aviation automobiles, electronic, and electrical application and other fields 22–25 . The introduction of a large nonplanar side groups on the polymer backbone can increase the distance between the molecular chain and destroy the symmetry and regularity of the molecular structure.…”

Section: Introductionmentioning

confidence: 99%

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Design and synthesis of low‐dieclectric polyaryl ethers containing bulky tetraphenyl vinyl pendant group

Hou,

Zong,

Zhu

et al. 2024

Polymers for Advanced Techs

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A tetraphenylethylene‐containing bisphenol monomer 5‐[4‐(triphenylvinyl)phenyl]benzene‐1,3‐diol (TPE‐OH) was designed and synthesized by Suzuki coupling and nucleophilic substitution reaction. By adjusting the proportion of TPE‐OH, a series of rigid polyaryl ether, namely PPTES, were facilely synthesized by homopolymerization or copolymerization with 4‐(4‐hydroxyphenyl)‐2,3‐diazepine‐1‐one (DHPZ) and 4,4′‐difluorodiphenyl sulfone (DFS). The following characterization of their structures with nuclear magnetic resonance and infrared spectroscopy confirmed successful synthesis of both monomers and polymers. Large, volume‐twisted and non‐coplanar rigid tetraphenylethylene could effectively increase the molecular chain spacing and reduce the regularity of the molecular chain, as evidenced by molecular dynamics simulation with Materials Studio, in turn to form an amorphous nature of PPTES phase state. In addition, such PPTESs have excellent solubility, heat resistance, and other comprehensive properties. Their glass transition temperature (Tg) is between 219 and 300°C, and the 5% thermogravimetric temperature of PPTESs locates at 490–539°C under N2 atmosphere. At 1 GHz, the intrinsic dielectric permittivity of polymer films is between 2.32 and 2.61, gradually decreases with TPE‐OH content. This work would provide new idea and choice for the selection of polyaryl ether resin bisphenol monomer, and promote the development and application of low‐dielectric polyarylether materials.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and synthesis of low‐dieclectric polyaryl ethers containing bulky tetraphenyl vinyl pendant group

Hou,

Zong,

Zhu

et al. 2024

Polymers for Advanced Techs

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show abstract

“…The synthesis of polymeric structures that can be used in enzyme-immobilization applications is seen as an important target for today's technology [40]. Due to its excellent mechanical properties, acid and alkali resistance, solvent resistance, good thermal stability, porosity, and poor hydrolysis [41,42], polyaryl ether sulfone can be used in ultrafiltration membranes [43] and adsorbents for heavy metals [44]. Moreover, polyaryl ether sulfone support is prepared from the carboxylicgroup-containing renewable resource bisphenolic acid, which not only has low cost and easy separation, but also has good adsorption between functional carboxyl groups and inactive sites of enzymes.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Hydrogen Peroxide Decomposition in a Continuous-Flow Reactor over Immobilized Catalase with PAES-C

Li,

Zhang,

Zhang

et al. 2024

Polymers

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Due to the specificity, high efficiency, and gentleness of enzyme catalysis, the industrial utilization of enzymes has attracted more and more attention. Immobilized enzymes can be recovered/recycled easily compared to their free forms. The primary benefit of immobilization is protection of the enzymes from harsh environmental conditions (e.g., elevated temperatures, extreme pH values, etc.). In this paper, catalase was successfully immobilized in a poly(aryl ether sulfone) carrier (PAES-C) with tunable pore structure as well as carboxylic acid side chains. Moreover, immobilization factors like temperature, time, and free-enzyme dosage were optimized to maximize the value of the carrier and enzyme. Compared with free enzyme, the immobilized-enzyme exhibited higher enzymatic activity (188.75 U g−1, at 30 °C and pH 7) and better thermal stability (at 60 °C). The adsorption capacity of enzyme protein per unit mass carrier was 4.685 mg. Hydrogen peroxide decomposition carried out in a continuous-flow reactor was selected as a model reaction to investigate the performance of immobilized catalase. Immobilized-enzymes showed a higher conversion rate (90% at 8 mL/min, 1 h and 0.2 g) compared to intermittent operation. In addition, PAES-C has been synthesized using dichlorodiphenyl sulfone and the renewable resource bisphenolic acid, which meets the requirements of green chemistry. These results suggest that PAES-C as a carrier for immobilized catalase could improve the catalytic activity and stability of catalase, simplify the separation of enzymes, and exhibit good stability and reusability.

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pH-responsive polyaryl sulfide sulfone amide membrane containing tertiary amine unit: Oxidation and reversible acid-base treatment

Huang,

Yuan,

Wan

et al. 2024

Journal of Membrane Science

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Side grafting tertiary amine in polyaryl ether sulfone membranes for reversible-multiple separations

Cited by 4 publications

References 37 publications

Design and synthesis of low‐dieclectric polyaryl ethers containing bulky tetraphenyl vinyl pendant group

Design and synthesis of low‐dieclectric polyaryl ethers containing bulky tetraphenyl vinyl pendant group

Enhanced Hydrogen Peroxide Decomposition in a Continuous-Flow Reactor over Immobilized Catalase with PAES-C

pH-responsive polyaryl sulfide sulfone amide membrane containing tertiary amine unit: Oxidation and reversible acid-base treatment

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