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Assessing the MALDI-TOF MS sample preparation procedure to analyze the influence of thermo-oxidative ageing and thermo-mechanical degradation on poly (Lactide)

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Assessing the MALDI-TOF MS sample preparation procedure to analyze the influence of thermo-oxidative ageing and thermo-mechanical degradation on poly (Lactide)

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dc.contributor.author Badia, J.D. es_ES
dc.contributor.author Strömberg, Emma Marie es_ES
dc.contributor.author Ribes Greus, María Desamparados es_ES
dc.contributor.author Karlsson, Sigbritt es_ES
dc.date.accessioned 2013-09-11T06:27:50Z
dc.date.issued 2011
dc.identifier.issn 0014-3057
dc.identifier.uri http://hdl.handle.net/10251/31954
dc.description.abstract [EN] Multiple processing by means of successive injection cycles was used to simulate the thermo-mechanical degradation effects on the oligomeric distribution of PLA under mechanical recycling. Likewise, an accelerated thermal ageing over PLA glass transition was performed in order to simulate its service life. MALDI-TOF MS was used for the analysis and the sample preparation procedure was assessed by means of a statistical Design of Experiments (DoE). The quality effects in use for the analysis were signal-to-noise ratio and Resolution. Different matrixes, analyte/matrix proportions and the use of NaTFA as cationization agent were considered. A deep inspection of the statistical results provided a better understanding of the influence of the different factors, individually or in combination, to the signal. The application of DoE for the improvement of the MALDI measurement of PLA stated that the best combination of factors (levels) was the following: matrix (s-DHB), proportion analyte/matrix (1/5 V/V), and no use of cationization agent. Degradation primarily affected the initially predominant cyclic [LA C] n and linear H[LA L] nOH species, where LA stands for a PLA repeating unit. Intramolecular and intermolecular transesterifications as well as hydrolytic and homolytic reactions took place during the formation and disappearance of oligomeric species. In both degradation mechanisms induced by thermal ageing and thermo-mechanical degradation, the formation of H[LA L] nOCH 3 by intermolecular transesterifications was highlighted. © 2011 Elsevier Ltd. All rights reserved. es_ES
dc.description.sponsorship The authors would like to acknowledge the Spanish Ministry of Science and Innovation for the financial support through the Research Project UPOVCE-3E-013. The Spanish Ministry for Education is acknowledged for the concession of a predoctoral research position to J.D. Badia by means of the FPU program. AIMPLAS is acknowledged for providing and processing the material, respectively. Royal Institute of Technology (KTH, Sweden) and Universitat Politecnica de Valencia (UPV, Spain) are also thanked for additional economical support. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MICINN/UPOVCE-3E-013 es_ES
dc.relation.ispartof EUROPEAN POLYMER JOURNAL es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Design of Experiments (DoE) es_ES
dc.subject Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI-TOF MS) es_ES
dc.subject Polylactide (PLA) es_ES
dc.subject Thermo-mechanical degradation es_ES
dc.subject Thermo-oxidative ageing es_ES
dc.subject Analytes es_ES
dc.subject Cationization es_ES
dc.subject Deep inspection es_ES
dc.subject Degradation mechanism es_ES
dc.subject Injection cycles es_ES
dc.subject MALDI TOF MS es_ES
dc.subject Matrix es_ES
dc.subject Matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry es_ES
dc.subject Mechanical recycling es_ES
dc.subject Multiple processing es_ES
dc.subject Poly(lactide) es_ES
dc.subject Polylactides es_ES
dc.subject Repeating unit es_ES
dc.subject Sample preparation procedure es_ES
dc.subject Signal to noise es_ES
dc.subject Statistical design of experiments es_ES
dc.subject Transesterifications es_ES
dc.subject Design of experiments es_ES
dc.subject Desorption es_ES
dc.subject Experiments es_ES
dc.subject Glass lasers es_ES
dc.subject Glass transition es_ES
dc.subject Mass spectrometry es_ES
dc.subject Mechanisms es_ES
dc.subject Oligomers es_ES
dc.subject Signal to noise ratio es_ES
dc.subject Degradation es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.title Assessing the MALDI-TOF MS sample preparation procedure to analyze the influence of thermo-oxidative ageing and thermo-mechanical degradation on poly (Lactide) es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1016/j.eurpolymj.2011.05.001
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics es_ES
dc.description.bibliographicCitation Badia, J.; Strömberg, EM.; Ribes Greus, MD.; Karlsson, S. (2011). Assessing the MALDI-TOF MS sample preparation procedure to analyze the influence of thermo-oxidative ageing and thermo-mechanical degradation on poly (Lactide). EUROPEAN POLYMER JOURNAL. 47(7):1416-1428. doi:10.1016/j.eurpolymj.2011.05.001 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.eurpolymj.2011.05.001 es_ES
dc.description.upvformatpinicio 1416 es_ES
dc.description.upvformatpfin 1428 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 47 es_ES
dc.description.issue 7 es_ES
dc.relation.senia 212676
dc.contributor.funder Ministerio de Ciencia e Innovación
dc.contributor.funder Royal Institue of Technology, Suecia
dc.contributor.funder Universitat Politècnica de València
dc.contributor.funder Ministerio de Educación


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