Chemical Modeling Analysis of Poly(aryl ether sulfone) Thermal Stability through Computer-Generated Reaction Mechanisms

Broadbelt, Linda J.; LaMarca, Concetta; Klein, Michael T.; Dean, Barry D.; Andrews, Stephen M.

doi:10.1021/ie00039a009

Cited by 5 publications

(2 citation statements)

References 10 publications

(14 reference statements)

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“…Exposure of 4 or 5 to heat can generate reactive decomposition intermediates, which react further, giving cross-linked products. 25,26 These findings are consistent with the thermal instability discovered for model compound 2 (see above). However, our target polysulfone 6 was accessible by exposure of 5 to copper(I) oxide under similar conditions as mentioned above for the preparation of 3.…”

Section: Resultssupporting

confidence: 90%

“…The brown solids isolated after each of these thermal treatments were completely insoluble in all solvents, including DMF or N -methyl-2-pyrrolidinone (NMP) at elevated temperatures, which is indicative of cross-linked material. Exposure of 4 or 5 to heat can generate reactive decomposition intermediates, which react further, giving cross-linked products. , These findings are consistent with the thermal instability discovered for model compound 2 (see above). However, our target polysulfone 6 was accessible by exposure of 5 to copper(I) oxide under similar conditions as mentioned above for the preparation of 3 .…”

Section: Resultssupporting

confidence: 85%

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A Remarkably Thermally Stable, Polar Aliphatic Polysulfone

Schmidt‐Winkel

Wudl

1998

Macromolecules

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A polar ester-functionalized aliphatic polysulfone with an odd-number of linking carbon atoms possessing remarkable thermal stability, degrading at 100°C above previously prepared polysulfones, was prepared in conjunction with the proposal of a novel concept for polar organic polymers. The synthesis involved polyaddition of vinyl sulfone and tert-butyl ethyl malonate in the presence of an amidine base and catalytic amount of water, followed by decarbo-tert-butoxylation. The polymers were characterized by infrared and nuclear magnetic resonance spectroscopies, elemental analysis, gel permeation chromatography, differential scanning calorimetry, and thermogravimetric analysis. Characterization results compared well with model compounds. Poly-decarbo-tert-butoxylation was achieved by exposure to trifluoroacetic acid, followed by treatment with copper(I) oxide, affording a soluble polar polysulfone, which could be cast into homogeneous films.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 85%

A Remarkably Thermally Stable, Polar Aliphatic Polysulfone

Schmidt‐Winkel

Wudl

1998

Macromolecules

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Engineering approximations for activation energies in hydrogen transfer reactions

Blowers

Masel

2000

AIChE Journal

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Photoresponse, thermal and electrical behaviors of MXene-based polysulfone nanocomposite

Demirelli,

Barim,

Çelik

et al. 2024

Polym. Bull.

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The Ti3C2Tx MXene nanosheet was prepared by 40% (v/v) hydrofluoric acid etching at 20 °C for 48 h and delamination of bulk MAX Ti3AlC2 precursor material. A 2D nanomaterial MXene Ti3C2Tx as a nanofiller was introduced to polysulfone (PSulfone) matrix. MXene and PSulfone/MXene nanocomposite systems were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscope, Fourier-transform infrared and thermogravimetric analysis instruments. Dielectric and electrical characterization of PSulfone/MXene nanocomposite was carried out. The electrical resistance of Ti3C2Tx MXene from measurement current (I)–voltage (V) was measured as 116 Ω. Pure PSulfone matrix exhibits typical insulator behavior, and MXene exhibits a good conductor behavior. But, when MXene was added to the pure PSulfone matrix, the resistance of the MXene/PSulfone nanocomposite increased moderately compared to that of pure MXene. In spite of the excess of surface functional groups, MXene showed surprisingly good electron transport across the surface, while in the case of PSulfone/MXene nanocomposite, the insulating behavior of PSulfone significantly reduced the electron transport of MXene. The semiconductor behavior of PSulfone/Ti3C2Tx MXene nanocomposite indicates that MXene provides efficient charge carrier transfer in the nanocomposite system. By comparing the TGA results between the PSulfone and different weight ratios of PSulfone/Ti3C2Tx MXene nanocomposites, it was determined that MXene nanosheets had a significant effect in slightly accelerating the thermal degradation of PSulfone. Optical conductivity was investigated by preparing a film of PSulfone/MXene nanocomposite on an interdigital contact. It was observed that the optical current values changed depending on the increasing illumination intensity. Considering current–voltage measurements, the photocurrent generation potential of PSulfone/MXene nanocomposite shows that it can be used in photodevice production.

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Chemical Modeling Analysis of Poly(aryl ether sulfone) Thermal Stability through Computer-Generated Reaction Mechanisms

Cited by 5 publications

References 10 publications

A Remarkably Thermally Stable, Polar Aliphatic Polysulfone

A Remarkably Thermally Stable, Polar Aliphatic Polysulfone

Engineering approximations for activation energies in hydrogen transfer reactions

Photoresponse, thermal and electrical behaviors of MXene-based polysulfone nanocomposite

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