- PII
- S0207401X25050105-1
- DOI
- 10.31857/S0207401X25050105
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume 44 / Issue number 5
- Pages
- 88-94
- Abstract
- 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.
- Keywords
- позитрон позитроний аннигиляция нанопоры микропоры мезопоры свободный объем удельная поверхность проницаемость адсорбция распределение по размерам
- Date of publication
- 15.09.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 2
References
- 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. Шантарович В.П., Бекешев В.Г., Кевдина И.Б., Густов В.В., Белоусова Э.В. // Химия высоких энергий. 2023. Т. 57. № 4. С. 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. Алентиев А.Ю., Чирков С.В., Никифоров Р.Ю. и др. // Мембраны и мембранные технологии 2022. Т. 12. № 1. С. 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. Tao 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. P. 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. Guńko V.M., Laboda R., Skubishevska-Zieba J., Gawdzik B., Charmas B. // Appl. Surf. Science 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.
