Alteration of Structure and Properties of Thin Polyimide Films and Coatings by Plasma and Thermal Treatment

Agapov, O. A.; Бабаевский, П. Г.; Zhukov, A. A.; Корнеева, Г. А.; Korovina, I. Yu.; Chetverov, Yu. S.

doi:10.1023/b:hiec.0000020560.29037.87

Cited by 2 publications

(3 citation statements)

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“…1, 2). These values are higher than published data [6] for a PMDA-ODA film 3.5 µ m in thickness; this difference can be due to differences in film preparation procedures. The permittivities of the starting PMDA-ODA and DADPO-R films werẽ 3.3 and ~3.4, respectively (Fig.…”

Section: Resultscontrasting

confidence: 76%

“…Agapov et al [6] found that the treatment of a thin (3.5 µ m) PI film of poly(pyromellite imide) in an RF 1 E-mail: svetlzhukova@yandex.ru discharge led to an increase in the diffusion coefficient of water from 0.14 × 10 -10 to 13 × 10 -10 cm 2 /s. However, a systematic study of the effect of lowtemperature plasma treatment on the diffusion of water in thin PI films has not been performed.…”

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confidence: 99%

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Effect of the RF-discharge plasma treatment of thin polyimide films on water diffusion

Zhukova¹,

Zhukov²,

Drachev

2005

High Energy Chem

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The effects of the treatment of thin polyimide films of different thickness (2-7.5 µ m), which were prepared from poly(amic acid) solutions, in a radiofrequency-discharge plasma on the diffusion of water and the permittivity were studied. It was found that the diffusion coefficients of water in the films increased with film thickness. The increase of the diffusion coefficients by a factor of 4-24 and an increase in the permittivity by a factor of 1.5-2 after the action of an RF discharge on the films was explained by an increase in the amount of polar groups and the formation of an excess negative charge, which was injected from the plasma, in the bulk of the films.

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Section: Resultscontrasting

confidence: 76%

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confidence: 99%

Effect of the RF-discharge plasma treatment of thin polyimide films on water diffusion

Zhukova¹,

Zhukov²,

Drachev

2005

High Energy Chem

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“…This could be supported by the fact that the absorption bands characteristic of aromatic amic acids are in the range of 2900 -3200 cm Ϫ1 as reported elsewhere. 53 The broad bands between 3200 and 3600 cm Ϫ1 might be attributed to the hydrogen bonded NH and OH groups. 54,55 The characteristic amide band is located within the 3240 -3320 cm Ϫ1 range as reported elsewhere.…”

Section: Chemical Structure Analysismentioning

confidence: 99%

Synthesis and characterization of modified bismaleimide/polysulfone semi‐interpenetrating polymer networks

Kurdi

Kumar

2006

J of Applied Polymer Sci

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The present work reports a new method of preparing semi‐interpenetrating polymer network (semi‐IPN) membranes through in situ polymerization of bismaleimide (BMI) within polysulfone (PSF). It was found that BMI could be polymerized at ambient conditions in the presence of a proton donor and PSF without the use of an initiator or a catalyst. Chemical structure characterization of these semi‐IPNs by Fourier transform infrared attenuated total reflection (FTIR‐ATR) revealed the possibility of imide cleavage and formation of amic acid when BMI polymerization was continued for a longer time while X‐ray photoelectron spectroscopy (XPS) revealed the protonation of imide nitrogen at shorter polymerization time. It was also found that size of thermoset BMI phase within the PSF thermoplastic has a significant impact on glass‐transition temperature of resulting semi‐IPN. By controlling the thermoset/thermoplastic phase separation of semi‐IPNs through dope composition and formation techniques, gas separation membranes with comparable selectivity and permeance that were up to 12 times higher than corresponding PSF membranes were formed. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 369–379, 2006

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Alteration of Structure and Properties of Thin Polyimide Films and Coatings by Plasma and Thermal Treatment

Cited by 2 publications

References 2 publications

Effect of the RF-discharge plasma treatment of thin polyimide films on water diffusion

Effect of the RF-discharge plasma treatment of thin polyimide films on water diffusion

Synthesis and characterization of modified bismaleimide/polysulfone semi‐interpenetrating polymer networks

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