Characterization and ageing study of poly(lactic acid) films plasticized with oligomeric lactic acid
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http://hdl.handle.net/10045/37890
| Títol: | Characterization and ageing study of poly(lactic acid) films plasticized with oligomeric lactic acid |
|---|---|
| Autors: | Burgos, Nuria | Martino, Verónica P. | Jiménez, Alfonso |
| Grups d'investigació o GITE: | Análisis de Polímeros y Nanomateriales |
| Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología |
| Paraules clau: | Poly(lactic acid) | Plasticization | Oligomeric lactic acid | Ageing |
| Àrees de coneixement: | Química Analítica |
| Data de publicació: | de febrer-2013 |
| Editor: | Elsevier |
| Citació bibliogràfica: | Polymer Degradation and Stability. 2013, 98(2): 651-658. doi:10.1016/j.polymdegradstab.2012.11.009 |
| Resum: | Poly(lactic acid) (PLA) was melt-blended with a bio-based oligomeric lactic acid (OLA) plasticizer at different concentrations between 15 wt% and 25 wt% in order to enhance PLA ductility and to get a fully biodegradable material with potential application in films manufacturing. OLA was an efficient plasticizer for PLA, as it caused a significant decrease on glass transition temperature (Tg) while improving considerably ductile properties. Only one Tg value was observed in all cases and no apparent phase separation was detected. Films obtained by compression moulding were stored during 3 months under ambient controlled conditions and thermal, mechanical, structural and oxygen barrier properties were studied in order to evaluate the stability of the PLA–OLA films over time. Blends with 20 and 25 wt% OLA remained stable and compatible with PLA within the ageing period. Besides, PLA–20 wt% OLA formulation was the only one which maintained its amorphous state with adequate thermal, mechanical and oxygen barrier properties for flexible films manufacturing. |
| Patrocinadors: | Authors thank to the Spanish Ministry of Science (Ref. MAT2011-28468-C02-01) for financial support and to Condensia Química S.A. for kindly supplying the plasticizer and their useful collaboration in the framework of a common research project (CDTI, Ref. IDI-20110558). |
| URI: | http://hdl.handle.net/10045/37890 |
| ISSN: | 0141-3910 (Print) | 1873-2321 (Online) |
| DOI: | 10.1016/j.polymdegradstab.2012.11.009 |
| Idioma: | eng |
| Tipus: | info:eu-repo/semantics/article |
| Revisió científica: | si |
| Versió de l'editor: | http://dx.doi.org/10.1016/j.polymdegradstab.2012.11.009 |
| Apareix a la col·lecció: | INV - NANOBIOPOL - Artículos de Revistas |
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