Further investigations on the hydrolytic degradation of poly (DL-lactide) (Record no. 45640)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 01741nam a2200265Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250625140650.0 |
| 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-11421 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT | |
| Title | Further investigations on the hydrolytic degradation of poly (DL-lactide) |
| 490 0# - SERIES STATEMENT | |
| Volume/sequential designation | BioMaterials, p.35-44, 1999 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | The hydrolytic degradation of poly(DL-lactide)(PLA50)material was investigated in order to elucidate the e¤ects of temperature and acidity of the external medium on the degradation characteristics. It was observed that at 60¡C and at pH"7.4, degradation was extremely rapid as compared with degradation at 37¡C. After only 2 days, heterogeneous degradation was observed due to larger internal autocatalysis. On the other hand, in the case of degradation at 37¡C in an acidic medium with pH"3.7, the heterogeneous degradation was preceeded by a much longer lag time. Water absorption was found to be pH dependent. At pH"7.4, water absorption was increased due to the osmotic pressure driving the bu¤er solution into the polymer matrix to neutralize acidic endgroups, which was not the case for degradation at pH"3.7. In both cases, the oligomeric stereocomplex was obtained as degradation residue at the end of the degradation period. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | POLYLACTIDE |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | BIODEGRADABLE |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | HYDROLYSIS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | DEGRADATION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | CRYSTALLIZATION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | MORPHOLOGY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | STEREOCOMPLEX |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Li, S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mccarthy, S. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://drive.google.com/file/d/1a5EUQVJvFFt6iL_MNjd-Z8imTNqXg1El/view?usp=drivesdk">https://drive.google.com/file/d/1a5EUQVJvFFt6iL_MNjd-Z8imTNqXg1El/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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clasificación local | Ref1 | CICY | CICY | Documento préstamo interbibliotecario | 25.06.2025 | B-11421 | 25.06.2025 | 25.06.2025 | Documentos solicitados |