Nanoporosity of polymer membranes and corresponding powder materials on the bases of gas sorption results and positron annihilation experiments

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Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

Variations of nanoporosity obtained on casting of membranes from the original highly dispersed polyphenylene oxides (PPO) of various crystallinity (from 0 to 69.2%) on the bases of the data, obtained by the methods of positron annihilation and low temperature gas (N2, CO₂) sorption, are discussed. The notion of nanoporosity includes microporosity and mesoporosity of the materials with pore sizes from some Å up to several tens of nanometers. A combination of the results of positron annihilation and sorption measurements with oxygen permeation data for the created membranes allow to conclude that, on transition from powder to solid membrane, microporosity is mostly stays unhanged while mesoporosity essentially transforms.

Толық мәтін

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Авторлар туралы

V. Shantarovich

Smenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: shant@chph.ras.ru
Ресей, Moscow

V. Bekeshev

Smenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: shant@chph.ras.ru
Ресей, Moscow

I. Kevdina

Smenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Email: shant@chph.ras.ru
Ресей, Moscow

A. Alentiev

Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences

Email: shant@chph.ras.ru
Ресей, Moscow

Әдебиет тізімі

  1. Mogensen O.E. Positron Annihilation in Chemistry / Eds. Goldanskii V.I., Schaeffer E.P. Berlin–Heidelberg–New York: Springer-Verlag, 1995.
  2. Budd P.M., McKeown N.B., Fritsch D., Yampolskii Yu.P., Shantarovich V.P. // Membrane Gas Separation / Eds. Yampolskii Yu.P., Freeman B. 2010. P. 29.
  3. Weber M.H., Lynn K.G. // Principles and Applications of Positron and Positronium Chemistry / Eds. Jean Y.C., Mallon P.E., Schrader D.M. New Jersey – London – Singapore – Hong Kong: World Scientific, 2003. P. 167.
  4. Shantarovich V.P. // J. Polym. Sci. Part B: Polym. Phys. 2008. V. 46. P. 2485. https://doi.org/10.1002/polb.21602
  5. Consolati G., Nichetti D., Quasso E. // Polymers. 2023. V. 15. P. 3128. https://doi.org/10.3390/polym15143128
  6. Brunauer S., Emmett P.H., Teller E. // J. Am. Chem. Soc. 1938. V. 60. № 2. P. 309.
  7. Brunauer S., Emmett P.H. // Ibid. 1935. № 7. P. 1754.
  8. IUPAC Reporting physisorption data for gas/solid systems // Pure & Appl. Chem. 1985. V. 57. № 4. P. 603.
  9. Brunauer S., Deming L.S., Deming W.S. et al. // J. Amer. Chem. Soc. 1940. V. 62. P. 1723.
  10. Shantarovich V.P., Bekeshev V.G., Kevdina I.B., Gustov V.V., Belousova E.V. // High Energy Chemistry. 2023. V. 57. № 4. P. 260. https://doi.org/10.31857/S0023119323040137
  11. NOVAWIN2 V.2.1. Operating Manual. Great Britain: Quantachrome Instruments, 2004.
  12. Alentiev A.Yu., Levin I.S., Buzin V.I. et al. // Polymer. 2021. V. 226. 123804. https://doi.org/10.1016/j.polymer.2021.123804
  13. Alentiev A.Yu., Levin I.S., Belov N.A. et al. // Polymers. 2022. V. 14. № 1. Article 120. https://doi.org/10.3390/polym14010120
  14. Alentiev A.Yu., Chirkov S.V., Nikiforov R.Yu. et al. // Membranes and Membrane Technologies. 2022. V. 12. № 1. P. 3. https://doi.org/10.1134/S2218117222010035
  15. Kirkegaard P., Pederson N.J., Eldrup M. PATFIT-88: A data processing system for positron annihilation spectra on the mainframe and personal computers, Risoe-M-2740, Risoe National Laboratory, DK-4000, Roskilde, Denmark, 1989.
  16. Taon S.J. // J. Chem. Phys. 1972. V. 56. P. 5499.
  17. Eldrup V., Lightbody D., Sherwood J.N. // Chem. Phys. 1981. V. 63. P. 51. https://doi.org/10.1016/0301-0104(81)80307-2
  18. Song T., Zhang P., Zhang C. et al. // Macropor. Mesopor. Mater. 2022. V. 334. 111761. http://doi.org/10.1016/j.micromeso.2022.111761
  19. Elmehalmey W.A., Azzam R.A., Hassan Y.S. et al. // ACS Omega. 2018. V. 3. P. 2757. http://doi.org/10.1021/acsomega.7b02080
  20. Gun’ko V.M., Laboda R., Skubishevska-Zieba J., Gawdzik B., Charmas B. // Appl. Surf. Sci. 2005. V. 252. № 3. P. 612. http://doi.org/10.1016/j.apsusc.2005.02075
  21. Zaleski R., Kierys A., Dziadosz M. et al. // RSC Adv. 2012. V. 2. P. 3729.

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1. JATS XML
Жүктеу
2. Fig. 1. Isotherms of CO₂ adsorption by polyphenylene oxide PPO membranes.

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Метадеректер
3. Fig. 2. CO₂ adsorption isotherms for PPO powders used in casting the corresponding membranes.

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4. Fig. 3. Isotherms of N₂ adsorption (dark symbols) and desorption (light symbols) at 77 K in the initial PPO powders.

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5. Fig. 4. Pore size distribution for the PPO-4 sample (PPO-500, powder), calculated from the sorption curve using the DFT model for nitrogen adsorbate N₂ at 77 K. The peaks correspond to pore diameters of 1.5, 3.0, and 7.8 nm.

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