Relationship between gas separation properties and chemical structure in a series of aromatic polyimides (Record no. 49007)
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| fixed length control field | 02061nam a2200205Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250625153948.0 |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | B-14822 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT | |
| Title | Relationship between gas separation properties and chemical structure in a series of aromatic polyimides |
| 490 0# - SERIES STATEMENT | |
| Volume/sequential designation | Journal of Membrane Science, 37(1), p.45-62, 1988 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | Gas permeabilities and permselectivities for various gas pairs [ He/CH,, CO,/CH,, N. H,, and 0,/N,]are reported for a series of aromatic polyimides synthesized in our laboratory. Gas solubility and diffusivity data are also reported for some of the polyimides. Systematic variations in chemical structure were found to lead to significant changes in permeabilities and selectivities. Further analysis shows that the permeability and selectivity changes in these cases are primarily due to the alteration of diffusivity factors. Generally, increases in permeability are attended by losses in permselectivity; however, some of the polyimides in the present series of materials were found to deviate very favorably from this typical behavior. Specifically, materials were discovered having simultaneously higher permeabilities and permselectivities than commercial polymers cur- rently being used as membrane materials. The relationship between gas separation properties and chemical structure is discussed in terms of intrasegmental mobility and intersegmental packing of the constituent polymers. The experimental data and their physical implications suggest the possibility that many new polymers having both high permeability and selectivity can be designed by tailoring the intrasegmental mobility and intersegmental packing of membrane polymers. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Kim, T.H. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Koros, W.J. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Husk, G.R. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | O'Brien, K.C. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://drive.google.com/file/d/1GW8PzcPCFd0U6eWVBuaiJntJDm9a3n49/view?usp=drivesdk">https://drive.google.com/file/d/1GW8PzcPCFd0U6eWVBuaiJntJDm9a3n49/view?usp=drivesdk</a> |
| Public note | Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Clasificación local |
| Koha item type | Documentos solicitados |
| Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Price effective from | Koha item type |
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| Clasificación local | Ref1 | CICY | CICY | Documento préstamo interbibliotecario | 25.06.2025 | B-14822 | 25.06.2025 | 25.06.2025 | Documentos solicitados |