Gil Castell, Ó.; Badía Valiente, JD.; Kittikorn, T.; Stromberg, E.; Martinez-Felipe, A.; Ek, M.; Karlsson, S.... (2014). Hydrothermal ageing of polylactide/sisal biocomposites. Studies of water absorption behaviour and Physico-Chemical performance. Polymer Degradation and Stability. 108:212-222. doi:10.1016/j.polymdegradstab.2014.06.010
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/62790
Title:
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Hydrothermal ageing of polylactide/sisal biocomposites. Studies of water absorption behaviour and Physico-Chemical performance
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Author:
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Gil Castell, Óscar
Badía Valiente, José David
Kittikorn, T.
Stromberg, E.
Martinez-Felipe, Alfonso
Ek, M.
Karlsson, S.
Ribes Greus, María Desamparados
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UPV Unit:
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Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials
Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics
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Issued date:
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Abstract:
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An accelerated hydrothermal degrading test was designed in order to analyse the synergic effect of water and temperature on PLA/sisal biocomposites with and without coupling agent. As well, the physicochemical properties ...[+]
An accelerated hydrothermal degrading test was designed in order to analyse the synergic effect of water and temperature on PLA/sisal biocomposites with and without coupling agent. As well, the physicochemical properties of biocomposites were monitored along the hydrothermal test by means of Scanning Electron Microscopy, Size Exclusion Chromatography and Differential Scanning Calorimetry. The addition of fibre induced higher water absorption capability and promoted physical degradation, as observed in the surface topography. During the processing of biocomposites and throughout the hydrothermal ageing, a reduction of molecular weight due to chain scission was found. As a consequence, a faster formation of crystalline domains in the PIA matrix occurred the higher the amount of fibre was, which acted as a nucleating agent. Higher crystallinity was considered as a barrier against the advance of penetrant and a reduction in the diffusion coefficient was shown. The addition of coupling agent presented a different influence depending on the composition, showing an inflection point around 20% of sisal fibre. (C) 2014 Elsevier Ltd. All rights reserved.
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Subjects:
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Polylactide (PLA)
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Biocomposites
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Natural fibres
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Sisal
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Hydrothermal degradation
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Water absorption
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Polymer Degradation and Stability. (issn:
0141-3910
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DOI:
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10.1016/j.polymdegradstab.2014.06.010
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Publisher:
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Elsevier
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Publisher version:
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http://dx.doi.org/10.1016/j.polymdegradstab.2014.06.010
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Project ID:
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Spanish Ministry of Economy and Competitiveness ENE2011-28735-C02-01
Generalitat Valenciana APOSTD/2013/054
Generalitat Valenciana ACOMP/2013/143
Universitat Politecnica de Valencia
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Thanks:
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The authors would like to acknowledge the Spanish Ministry of Economy and Competitiveness, through the Research Project ENE2011-28735-C02-01. Generalitat Valenciana is thanked for the APOSTD/2013/054 and ACOMP/2013/143 ...[+]
The authors would like to acknowledge the Spanish Ministry of Economy and Competitiveness, through the Research Project ENE2011-28735-C02-01. Generalitat Valenciana is thanked for the APOSTD/2013/054 and ACOMP/2013/143 programs. Universitat Politecnica de Valencia is thanked for the concession of a pre-doctoral grant to Oscar Gil Castell. O.G.C. wants to warmly dedicate this paper to Marita and Vicente for their endless and priceless support, and to Maria, his beloved pillar.
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Type:
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Artículo
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