Poly(amino) imides based on symmetrical and asymmetrical imido acid dichlorides

Gusinskaya, V. A.; Koton, M.M.; Batrakova, T. V.; Ромашкова, К. А.

doi:10.1016/0032-3950(76)90417-2

Cited by 15 publications

(14 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Poly(diphenylsulfone- N -phenylphthalimide) (PAI-SO 2 , Figure 5) was synthesized by low-temperature condensation polymerization [33]. The reaction was carried out in N -methylpyrrolidin-2-one (NMP, Sigma-Aldrich, Budapest, Hungary), first at −15 °С for 1 h and then at room temperature for 2 h. The synthesis conditions were selected so that the resulting polymer samples had a reduced viscosity of 2.0–2.2 dL·g −1 of their 0.5 wt % solutions in NMP.…”

Section: Methodsmentioning

confidence: 99%

Two-Ply Composite Membranes with Separation Layers from Chitosan and Sulfoethylcellulose on a Microporous Support Based on Poly(diphenylsulfone-N-phenylphthalimide)

et al. 2017

View full text Add to dashboard Cite

Two-ply composite membranes with separation layers from chitosan and sulfoethylcellulose were developed on a microporous support based on poly(diphenylsulfone-N-phenylphthalimide) and investigated by use of X-ray diffraction and scanning electron microscopy methods. The pervaporation properties of the membranes were studied for the separation of aqueous alcohol (ethanol, propan-2-ol) mixtures of different compositions. When the mixtures to be separated consist of less than 15 wt % water in propan-2-ol, the membranes composed of polyelectrolytes with the same molar fraction of ionogenic groups (-NH3+ for chitosan and -SO3− for sulfoethylcellulose) show high permselectivity (the water content in the permeate was 100%). Factors affecting the structure of a non-porous layer of the polyelectrolyte complex formed on the substrate surface and the contribution of that complex to changes in the transport properties of membranes are discussed. The results indicate significant prospects for the use of chitosan and sulfoethylcellulose for the formation of highly selective pervaporation membranes.

show abstract

Section: Methodsmentioning

confidence: 99%

Two-Ply Composite Membranes with Separation Layers from Chitosan and Sulfoethylcellulose on a Microporous Support Based on Poly(diphenylsulfone-N-phenylphthalimide)

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The polyamidoimide (M w = 65000) was prepared from 4-chloroformyl-(N-p-chloroformylphenyl)phthalimide and 4,4'-diaminodiphenyl ether (0.01 mol of the each component) via the low-temperature solution polycondensation [36]. The reaction was carried out in N-methyl-2-pyrrolidone first at -15°С during 1 h and then at room temperature during 2 h to yield viscous pale-yellow solution.…”

Section: Methodsmentioning

confidence: 99%

Morphology and mechanical properties of polymer-inorganic nanocomposite containing triple chain fibrous Na-Mg hydrosilicate

et al. 2015

View full text Add to dashboard Cite

A polymer-inorganic nanocomposite of fibrous Na-Mg triple chain hydrosilicate and polyamidoimide based on 4-chloroformyl-(N-p-chloroformylphenyl)phthalimide and 4,4'-diaminodiphenyl ether has been developed. Morphology and dynamic mechanical properties of the nanocomposite films have been studied. Anisotropy of mechanical properties of the nanocomposite and the pristine polyamidoimide films has been revealed. Introduction of the fibrous filler disrupts the ordered mesomorphic structure of the polymer matrix; its recovery upon heating above the glass transition temperature is possible.

show abstract

“…PAI was obtained by polycondensation of 4-chloroformyl-N-(p-chloroformylphenyl)-phthalimide and 4,4 0 -oxydianiline in N-methyl-2-pyrrollidone (N-MP) as described elsewhere. 12 SPI -Poly{[4,4 0 -bisdiphenyl-2,2 0 -disulfonic acid]imide-1,3-bis(3,4-dicarboxyphenoxy)benzene} was synthesized by a two-stage polycondensation of DBTA and BDSA according to the previously developed procedure. 11 Chemical structures of both polymers are presented in Figure 1.…”

Section: Polymer Synthesismentioning

confidence: 99%

Increasing the performance of asymmetric pervaporation membranes for the separation of methanol/methyl‐tert‐butyl ether mixtures by the introduction of sulfonated polyimide into the poly(amide‐imide) matrix

Sapegin

Gubanova

Попова

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

A series of novel asymmetric membranes from polymer composites of poly(amide-imide) with various content of sulfonated polyimide (1-6 wt%) was obtained through the nonsolvent-induced phase separation process. Selective transport properties of the obtained materials were investigated in terms of pervaporation separation of methanol/methyl-tert-butyl ether mixtures at different temperatures. The introduction of the sulfonated polyimide to the poly(amide-imide) matrix leads to a significant increase in membrane flux and an overall decrease in the process selectivity. Composite membranes having 1 wt% sulfonated polyimide in the matrix showed increased values of membrane flux (0.960 kg m −2 h −1 in comparison with 0.682 kg m −2 h −1 for unmodified membranes at 40 C, 10 wt% methanol), while having similar selectivity values (79.2 wt% methanol in permeate in comparison with 82 wt% for unmodified membranes at 40 C, 10 wt% methanol). Modified membrane showed the highest separation factor of 147 while separating methanol from its 3 wt% mixture with methyl-tert butyl ether at 52 C with the overall flux of 1.01 kg m −2 h −1. A semiempirical mathematical model was developed and applied to test the efficiency of obtained membranes in the hybrid process of methanol/methyl-tert-butyl ether mixtures separation.

show abstract

Poly(amino) imides based on symmetrical and asymmetrical imido acid dichlorides

Cited by 15 publications

References 6 publications

Two-Ply Composite Membranes with Separation Layers from Chitosan and Sulfoethylcellulose on a Microporous Support Based on Poly(diphenylsulfone-N-phenylphthalimide)

Two-Ply Composite Membranes with Separation Layers from Chitosan and Sulfoethylcellulose on a Microporous Support Based on Poly(diphenylsulfone-N-phenylphthalimide)

Morphology and mechanical properties of polymer-inorganic nanocomposite containing triple chain fibrous Na-Mg hydrosilicate

Increasing the performance of asymmetric pervaporation membranes for the separation of methanol/methyl‐tert‐butyl ether mixtures by the introduction of sulfonated polyimide into the poly(amide‐imide) matrix

Contact Info

Product

Resources

About