Gas Permeability and Permselectivity of Polyimides Prepared from 4,4′-Diaminotriphenylamine

Okamoto, Ken‐ichi; Tanaka, Kazuhiro; Kita, Hidetoshi; Ishida, Mina; Kakimoto, Masa–aki; Imai, Yoshio

doi:10.1295/polymj.24.451

Cited by 61 publications

(36 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…26,27 These polymers were soluble in many polar solvents and showed useful levels of thermal stability associated with high glass-transition temperatures (T g ) (287-331°C) and high char yields.…”

Section: Introductionmentioning

confidence: 99%

Solution-processable triarylamine-based high-performance polymers for resistive switching memory devices

Yen

Liou

2015

Polym J

View full text Add to dashboard Cite

This review summarizes the most widely used mechanisms in high-performance polymeric resistive memory devices, such as charge transfer, space charge trapping and filament conduction. In addition, recent studies of functional high-performance polymers for memory device applications are reviewed, compared and differentiated based on the mechanisms and structural design methods used. By carefully designing the polymeric structure based on these systematically investigated switching mechanisms, almost all types of current memory characteristics can be reproduced, and these memory properties show extremely high endurance during long-term operation, which makes polyimides very suitable materials for memory applications. INTRODUCTION High-performance polymersToday, life without polymers is unimaginable. Polymers have become the major synthetic materials of the 21st century. High-performance polymers (HPPs) are particularly desirable. The synthesis and development of HPPs over the past 30 years have drawn the attention of many polymer scientists and investigators. These polymers generally possess excellent physical deformation resistance and chemical deterioration resistance at high temperatures over long periods of time. The quest for HPPs began in the late 1950s to meet the demands of the military, aerospace, machine-building and electronics industries, among many other industrial applications.Hill and Walker 1 first noted that the incorporation of aromatic segments into a polymer generally results in a notable increase in its thermal stability. For this reason, much of the research work has been directed toward aromatic compositions. Hence, HPPs usually tend to contain large numbers of aromatic units in their structures. Several of these aromatic HPPs have been used for commercial applications, such as aromatic polyamides, polyimides, polyesters, polysulfones, polytriphenylamine and heterocyclic polymers (Scheme 1). Aromatic polyamides (aramids) and polyimides, such as DuPont's Kevlar fiber and Kapton film, respectively, have been well known for a long time and constantly attract more interest than other HPPs for their useful properties, such as excellent thermal and oxidative stabilities, high mechanical strengths, low flammabilities and good chemical and radiation resistances. [2][3][4][5][6][7][8][9][10][11][12][13] However, the rigidity of the backbone and strong hydrogen bonding of these HPPs result in high melting or glass-transition

show abstract

Section: Introductionmentioning

confidence: 99%

Solution-processable triarylamine-based high-performance polymers for resistive switching memory devices

Yen

Liou

2015

Polym J

View full text Add to dashboard Cite

show abstract

“…A number of studies have been done on the relationships between the chemical structure of polyimides and their gas permeation properties. [1][2][3][4][5][6][7] Polyimides with 2,2-bis(3,4-decarboxyphenyl)-hexafluoropropane dianhydride (6FDA) are promising membrane materials for some gas separations because they exhibit a high separation performance for different gases. 8 -11 6FDA-based polyimides exhibit good performance for the separation of olefin gases from paraffin gases in comparison with other conventional polymers.…”

Section: Introductionmentioning

confidence: 99%

Relationships between the chemical structures and the solubility, diffusivity, and permselectivity of propylene and propane in 6FDA-based polyimides

Shimazu

Miyazaki

Maeda

et al. 2000

J. Polym. Sci. B Polym. Phys.

View full text Add to dashboard Cite

“…Such a classification is confirmed by the analyses of polyimide data for permanent gases, that is, O 2 , N 2 , and H 2 1, 2, 4–6, 17, 19, 23–33. The differences in the kinetic diameter of gas molecules do not explain such a classification.…”

Section: Resultsmentioning

confidence: 95%

“… Selectivity versus permeability for binary gas mixtures O 2 /N 2 (a) and H 2 /O 2 (b), for published results on polyimides (×),1, 2, 4–6, 17, 19, 23–33 ODA‐cresol (□), ODACF3‐cresol (○), and ODACF3‐NMP (•) series. The line is the upper bound determined by Robeson et al22 [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]…”

Section: Resultsmentioning

confidence: 99%

Copolyimides containing alicyclic and fluorinated groups: Solubility and gas separation properties

Bas

Merçier

Sánchez-Marcano

et al. 2005

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

A series of polyimides with alicyclic and fluorinated moieties previously synthesized were studied for gas separation applications. The solubility behavior of polyimides in various solvents was analyzed through the solubility parameter approach. Permeability coefficients and ideal selectivities were determined for common gases, that is, He, H2, O2, and N2. Polyimide permeabilities were correlated to an improvement of the soluble character and were increased by the introduction of both alicyclic and fluorinated structures. The effect of the casting solvent on gas separation properties was also pointed out. It was found that it is enhanced with increasing diameters for the gas molecules. Finally, some correlations between permeability coefficients and microstructural parameters were discussed. The probability of correlation appears to be also dependent on the diameter and on the polarizability of the gas molecule. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 2413–2426, 2005.

show abstract

Gas Permeability and Permselectivity of Polyimides Prepared from 4,4′-Diaminotriphenylamine

Cited by 61 publications

References 10 publications

Solution-processable triarylamine-based high-performance polymers for resistive switching memory devices

Solution-processable triarylamine-based high-performance polymers for resistive switching memory devices

Relationships between the chemical structures and the solubility, diffusivity, and permselectivity of propylene and propane in 6FDA-based polyimides

Copolyimides containing alicyclic and fluorinated groups: Solubility and gas separation properties

Contact Info

Product

Resources

About