Non-migrating PVC plasticizers based on oligocaprolactones obtained by ring-opening polymerization
Oligomeric plasticizers for PVC were synthesized using ring-opening-polymerization of caprolactone (CL) initiated by aromatic and heteroaromatic thiol compounds containing hydroxy groups. The obtained plasticizers were chemically bound to the polymer both, in solution and in the melt, with different...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/373158 |
| Acceso en línea: | http://hdl.handle.net/10261/373158 |
| Access Level: | acceso abierto |
| Palabra clave: | PVC Plasticizer Ring-opening Caprolactone Migration resistance |
| Sumario: | Oligomeric plasticizers for PVC were synthesized using ring-opening-polymerization of caprolactone (CL) initiated by aromatic and heteroaromatic thiol compounds containing hydroxy groups. The obtained plasticizers were chemically bound to the polymer both, in solution and in the melt, with different PVC/plasticizer weight ratios and their efficiency with respect to the degree of anchorage, resistance to migration and plasticization were studied. Thiolates from heteroaromatic thiol plasticizers were too strongly basic and produced partial hydrolysis and transesterification side reactions during the anchorage reaction to the polymer. On the other hand, oligomers carrying an aromatic thiol end group could be bound selectively and without hydrolysis to the PVC chains. The most suitable system was produced on a 50 kg scale and the plasticized materials obtained were analysed showing good degrees of anchorage and excellent plasticizing properties. |
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