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Título

Characterisation of a bio-based packaging containing a natural additive from Allium spp. using analytical pyrolysis and carbon stable isotopes

AutorLlana Ruiz-Cabello, M.; Pichardo, S.; Jiménez Morillo, N. T. ; Abad Power, Paloma; Guillamón E.; González-Vila, Francisco Javier ; Cameán Fernández, A. M.; González-Pérez, José Antonio
Palabras clavePolybutylene succinate
Analytical pyrolysis
Plant extract
Stable isotopes
Polylactic acid
Fecha de publicaciónjul-2016
EditorElsevier
CitaciónJournal of Analytical and Applied Pyrolysis 120: 334- 340 (2016)
ResumenAnalytical pyrolysis (Py-GC/MS) was used to fingerprint a polylactic acid (PLA) with polybutylene succinate (PBS) (950 g Kg:50 g Kg) film extruded with variable quantities (0, 20, 50 and 65 g Kg) of a commercial additive (Proallium) prepared from Allium spp. extracts. The carbon isotopic signature(δC) was used to estimate the amount of additive to be incorporated into the casting of the active biopolymer. The main PLA:PBS pyrolysis products were lactide enantiomers and monomer units, in addition to structures from the PBS fraction. The pyrolysis of the plant extract additive, apart from a number of organosulphur compounds derived from the active ingredients, released oligomers of polyethylene glycol, alkyl ethers and a conspicuous peak of oleic acid, 3-hydroxypropyl ester compatible with a polyoxyethylene sorbitan monooleate surfactant. The sulphur compound, propyl sulphide, was a diagnostic peak with which to trace the additive in the polymer. In fact, a correlation coefficient of value 0.997R (p < 0.001) was found between the chromatographic area of this peak and the amount of additive in the bioplastic. The real amount of additive incorporated in the bioplastic was estimated through a mass-balance equation, taking advantage of the differential δC signatures between the polymeric base and the additive.
Descripción7 páginas.-- 4 figuras.-- 45 referencias
Versión del editorhttp://dx.doi.org/10.1016/j.jaap.2016.05.021
URIhttp://hdl.handle.net/10261/141394
DOI10.1016/j.jaap.2016.05.021
Identificadoresdoi: 10.1016/j.jaap.2016.05.021
issn: 0165-2370
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