Aromatic polysulfones for flame retardancy

Macocinschi, Doina; Grigoriu, Aurelia; Filip, Daniela

doi:10.1016/s0014-3057(01)00253-1

Cited by 32 publications

(15 citation statements)

References 7 publications

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“…PSU was selected because it has a higher glass transition temperature than PS (Lisa et al, 2003) (T g : 100 °C for PS and T g : 190 °C for PSU from Sigma Aldrich) due to the strong resonant aryl-sulfone groups. In addition, PSU has been used as an additive for flame retardant materials due to its high thermal stability (Macocinschi et al, 2002). …”

Section: Control Of the Flux Transition Temperature Using Ps:psu Blendmentioning

confidence: 99%

Thermoregulated gas transport through electrospun nanofiber membranes

Han

2015

Chemical Engineering Science

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Thermoregulation of gas transport using electrospun fiber membranes is demonstrated experimentally for the first time. The fiber membranes comprise three layers: a middle layer of electrospun polystyrene sandwiched between two outer layers of electrospun cellulose acetate mat as supports, bonded together by hot pressing. The electrospun polystyrene layer serves as a phase change material that blocks transport of gases though the membrane when the fibers de-vitrify. The membrane exhibited a reduction in oxygen flux at temperatures in excess of 140 °C. Using a blend of polysulfone and polystyrene resulted in an upward shift of the transition temperature to 250 °C. Modeling of transport was performed to estimate the impact of the morphological properties of the membranes such as tortuosity, fiber diameter, and porosity.

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Section: Control Of the Flux Transition Temperature Using Ps:psu Blendmentioning

confidence: 99%

Thermoregulated gas transport through electrospun nanofiber membranes

Han

2015

Chemical Engineering Science

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“…The material extinguishes after removal of the test flame and poly- (sulfone)s are inherently self-extinguishing materials owing to their highly aromatic character. 57 A hydroxy terminated copoly(ester sulfone) synthesized by melt polycondensation of the diethylene glycol and 4,4-dihydroxydiethoxydiphenyl sulfone with adipic acid can be used as a flame retardant for poly(ethylene terephthalate).…”

Section: Thermal Propertiesmentioning

confidence: 99%

Poly(arylene ether sulfone)s

Fink

2008

High Performance Polymers

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“…The samples containing segmented block copolyurethanes were prepared by the reaction of aromatic diisocyanates such as MDI or TDI, both from Merck and distilled under reduced pressure, with PEGA from Fibrex Savinesti (M n ¼ 2000 g/mol) and 4,4 0 -dihidroxydiethoxydiphenyl sulphone as chain extender (DEDS) [18][19] using a two steps polyaddition process in DMF [20]. The 4,4 0 -dihidroxydiethoxydiphenyl sulphone chain extender utilized in this work introduces high performance having excellent chemical and thermal stability, because of the strong resonant aryl-sulphone groups, and because of the hexavalent sulfur [19].…”

Section: Structure and Compositional Parameters Of Poly(ester Urethane)smentioning

confidence: 99%

“…The 4,4 0 -dihidroxydiethoxydiphenyl sulphone chain extender utilized in this work introduces high performance having excellent chemical and thermal stability, because of the strong resonant aryl-sulphone groups, and because of the hexavalent sulfur [19]. In the first stage of reaction, the NCO-terminated prepolymer was formed: PEGA was dehydrated for 3 h at 120 C followed by the addition of MDI or TDI.…”

Section: Structure and Compositional Parameters Of Poly(ester Urethane)smentioning

confidence: 99%

Viscometric Study of Segmented Poly(ester-urethane) Solutions in Dilute and Extremely Dilute Concentration Domains

Ioan¹,

Lupu²,

Taranu³

et al. 2005

International Journal of Polymeric Materials

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Synthesis and viscometric behavior of segmented poly(ester-urethane)s in N,Ndimethyl-formamide solution ranged from semidilute to extremely dilute concentration were investigated. The data reflected the conformation changes in the 17-45 C range, and the results are discussed in relation to the behavior of the poly(ethylene glycol)adipate in the same solvent. The intrinsic viscosities and critical concentration that separate the dilute-extremely dilute regimes are also studied. A scanning law between the reduced viscosity g sp =c and the concentration for the extremely dilute regime is found and the deviations from Huggins dependence at different temperatures are discussed.

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Aromatic polysulfones for flame retardancy

Cited by 32 publications

References 7 publications

Thermoregulated gas transport through electrospun nanofiber membranes

Thermoregulated gas transport through electrospun nanofiber membranes

Poly(arylene ether sulfone)s

Viscometric Study of Segmented Poly(ester-urethane) Solutions in Dilute and Extremely Dilute Concentration Domains

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