Synthesis and properties of a novel perfluorononenyloxy group containing polyarylates

Wang, Chun‐Shan; Yang, Ruining; Hsu, Kuo-Run

doi:10.1002/(sici)1099-0518(199803)36:4<645::aid-pola13>3.0.co;2-m

Cited by 11 publications

(5 citation statements)

References 7 publications

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“…As could be seen from Table II, for a particular PBI case, the T g obtained by DSC is slightly lower than its T g determined by DMA (designated as T α ). This is in accordance with the observation found in case of other family of polymers, such as polyarylates27 and PBI 28. Usually, such difference is attributable to the method of analysis 28.…”

Section: Resultssupporting

confidence: 91%

Polybenzimidazoles based on 3,3′‐diaminobenzidine and aliphatic dicarboxylic acids: Synthesis and evaluation of physicochemical properties toward their applicability as proton exchange and gas separation membrane material

Bhavsar

Nahire

Kale

et al. 2010

J of Applied Polymer Sci

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A series of aromatic-aliphatic polybenzimidazoles (PBIs) based on 3,3'-diaminobenzidine (DAB) and aliphatic dicarboxylic acid with incremental ACH 2 A groups were synthesized. Optimization of synthesis parameters and evaluation of physicochemical properties are requisite for PBI applicability as the proton exchange membrane (PEM) and gas separation membrane materials are reported. It was found that though all these PBIs exhibited high thermal, mechanical, and oxidative stability, effect of added flexibility on physical properties is not monotonous. Membranes were prepared by solution casting as well as phase-inversion method. The later types of membranes exhibited much higher H 3 PO 4 content than its doping achieved in the solution casted membranes. These PBIs possess low hydrogen and helium permeability than that of conventional PBI. This low permeability, along with their excellent oxidative stability indicated that they can be promising PEM materials. Their CO 2 -sorption analysis revealed that PBI 6 based on suberic acid possesses appreciable CO 2 sorption.

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Section: Resultssupporting

confidence: 91%

Polybenzimidazoles based on 3,3′‐diaminobenzidine and aliphatic dicarboxylic acids: Synthesis and evaluation of physicochemical properties toward their applicability as proton exchange and gas separation membrane material

Bhavsar

Nahire

Kale

et al. 2010

J of Applied Polymer Sci

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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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“…To increase their solubility and modify the thermal stability, various structural changes are made in the polyester chain. [11][12] It has been found in the literature that the introduction of groups with sp 3 hybridized atoms (-CR 2 ), ether linkage, pendant phenyl groups and cyano groups can improve the solubility of polyesters. [13][14][15] The introduction of flexible units in the main chain, appending bulky substituent to the polymer chain, insertion of cardo moieties and the introduction of bulky pendant groups into the polymer chain are some of the approaches generally adopted to improve the solubility of polymers without affecting the thermal stability much.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, spectral and thermal characterization of polyester derived from 1,1-bis(4-hydroxyphenyl)cyclohexane

Latha

Natarajan

Krishnasamy

et al. 2013

High Performance Polymers

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A series of polyesters with pendant cyclohexane ring as a cardo group were synthesized by reacting 1,1-bis(4-hydroxyphenyl)cylcohexane (bisphenol-Z (BPZ)) with diacid chlorides. The molecular structures of the monomer and polymers were confirmed by spectral analyses. Thermal properties were studied using thermogravimetric analysis and differential scanning calorimetry. The thermogravimetric data revealed that the polymers are stable up to 190 C and start to degrade thereafter. The thermal stability initially increases with increase in spacer length and then decreases due to negative effects of the spacer. In the present study, Arrhenius, Broido and Horowitz-Metzger models have been used to calculate the degradation kinetic parameters.

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Synthesis and properties of a novel perfluorononenyloxy group containing polyarylates

Cited by 11 publications

References 7 publications

Polybenzimidazoles based on 3,3′‐diaminobenzidine and aliphatic dicarboxylic acids: Synthesis and evaluation of physicochemical properties toward their applicability as proton exchange and gas separation membrane material

Polybenzimidazoles based on 3,3′‐diaminobenzidine and aliphatic dicarboxylic acids: Synthesis and evaluation of physicochemical properties toward their applicability as proton exchange and gas separation membrane material

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

Synthesis, spectral and thermal characterization of polyester derived from 1,1-bis(4-hydroxyphenyl)cyclohexane

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