The influence of UV-C irradiation on the properties of thermoplastic starch and polycaprolactone biocomposite with sisal bleached fibers
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
30/09/2013
20/05/2014
30/09/2013
20/05/2014
01/10/2012
|
Resumo |
The effect of UV-C irradiation of the TPS and PCL biocomposites with sisal bleached fibers was investigated. The biocomposite was UV-C irradiated at room temperature under air atmosphere. The structural and morphological changes produced when the films were exposed to UV irradiation for 142 h, were monitored using Scanning Electron Microscopy (SEM), Mechanical Tensile Tests, Differential Scanning Calorimetry (DSC), X-ray diffraction, Thermogravimetric analysis (TGA), and Fourier transform infra-red analysis (FTIR). Addition of 5-10% fibers in composites exhibited improved mechanical and thermal properties attributed to more efficient dispersibility of fiber in the matrix and good compatibility between fibers and the matrix polymer, however, after irradiated, the tensile properties decreased due to chain scission. The samples of irradiated PCL and IFS showed crystallinity increase, whereas the blend and composites showed a decrease in crystallinity. The DSC and X-ray diffraction studies suggested interaction between polymers in the blend via carboxyl groups in thermoplastic starch-PCL and hydroxyl groups in fibers. (C) 2011 Elsevier Ltd. All rights reserved. |
Formato |
1948-1955 |
Identificador |
http://dx.doi.org/10.1016/j.polymdegradstab.2011.11.010 Polymer Degradation and Stability. Oxford: Elsevier B.V., v. 97, n. 10, p. 1948-1955, 2012. 0141-3910 http://hdl.handle.net/11449/20124 10.1016/j.polymdegradstab.2011.11.010 WOS:000309087900012 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Polymer Degradation and Stability |
Direitos |
closedAccess |
Palavras-Chave | #Polycaprolactone (PCL) #Thermoplastic starch (TPS) #Sisal fibers #Photodegradation |
Tipo |
info:eu-repo/semantics/article |