Microbial Degradation of Polyesters: Polycaprolactone Degraded by P. pulluluns (Record no. 39906)
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| fixed length control field | 01842nam a2200193Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250625122501.0 |
| 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-5559 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT | |
| Title | Microbial Degradation of Polyesters: Polycaprolactone Degraded by P. pulluluns |
| 490 0# - SERIES STATEMENT | |
| Volume/sequential designation | Journal of Applied Polymer Science, 18(12), p.3571-3579, 1974 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | Polycaprolactone is degraded by the mold P. pullulans in the presence of other nutrients. The weight loss from solid polymer films covered by a nutrient agar gel on which colonies are growing is used to establish comparative rates of degradation. There is substantial loss (16 mg/cm2 surface area)from a whole polymer of low (2,000)molecular weight in three weeks at 30°C. A high (30,000)molecular weight whole polymer degrades about 0.15 as much in the same time period. A fraction in the same range (38,000)but with a narrower molecular weight distribution shows no significant loss. This indicates that whole polymers of high molecular weight may lose only a portion of their distribution by microbial degradation in short-term tests. This hypothesis is tested by making mixtures of high (61,000)molecular weight with low (2,000)molecular weight polymer. Degradation is directly proportional to the low molecular weight content in these short-term tests with a single species of mold. Other workers have shown previously that in long-term, soil-burial tests, even a high (40,000)molecular weight polycaprolactone is essentially completely degraded after one year. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Fields, R. D. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rodriguez, F. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Finn, R. K. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://drive.google.com/file/d/1DaA9VQrZJ9Fwy0f0PJyUDk1xBprPxjEA/view?usp=drivesdk">https://drive.google.com/file/d/1DaA9VQrZJ9Fwy0f0PJyUDk1xBprPxjEA/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-5559 | 25.06.2025 | 25.06.2025 | Documentos solicitados |