CHEMICAL MODIFICATION EFFECT on THE MECHANICAL PROPERTIES of HIPS/COCONUT FIBER COMPOSITES

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorCarvalho, Kelly C. C.
dc.creatorMulinari, Daniella R.
dc.creatorVoorwald, Herman Jacobus Cornelis
dc.creatorCioffi, Maria O. H.
dc.date2014-05-20T13:28:17Z
dc.date2016-10-25T16:48:02Z
dc.date2014-05-20T13:28:17Z
dc.date2016-10-25T16:48:02Z
dc.date2010-01-01
dc.date.accessioned2017-04-05T20:10:58Z
dc.date.available2017-04-05T20:10:58Z
dc.identifierBioresources. Raleigh: North Carolina State Univ Dept Wood & Paper Sci, v. 5, n. 2, p. 1143-1155, 2010.
dc.identifier1930-2126
dc.identifierhttp://hdl.handle.net/11449/9403
dc.identifierhttp://acervodigital.unesp.br/handle/11449/9403
dc.identifierWOS:000278317900002
dc.identifierhttp://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_05_2_1143_Carvalho_MVC_Chem_Mod_HIPS_coconut_composites
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/857569
dc.descriptionLignocellulosic fibers from green coconut fruit were treated with alkaline solution (NaOH 10% m/v) and then bleached with sodium chlorite (NaClO(2)) and acetic acid (CH(3)COOH). Alkali-treated and bleached fibers were mixed with high impact polystyrene (HIPS) and placed in an injector chamber in order to obtain specimens for tensile tests. Specimens of HIPS/alkali-treated and bleached coconut fiber composites were tested in tensile mode, and the fracture surfaces of the composites were analyzed by scanning electron microscopy. Untreated, alkali-treated, and bleached coconut fibers were analyzed by scanning electron microscopy and X-ray diffraction. Alkaline treatment was effective for removing the extractives and increasing the roughness of surfaces, while the bleaching treatment intensified the effect of alkaline treatment, while increasing the crystallinity index and surface energy of fibers. Results of tensile tests showed that the addition of 30% alkali-treated and bleached fibers reinforcing the HIPS matrix provided considerable changes in the mechanical properties of composites in comparison with the pure HIPS. on the other hand, chemical treatments were not totally effective for improving the adhesion between the fiber and matrix, as was observed in the analysis of the fracture surfaces of composites materials.
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageeng
dc.publisherNorth Carolina State Univ Dept Wood & Paper Sci
dc.relationBioResources
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectPolymer-matrix composites
dc.subjectLignocellulosic fiber
dc.subjectInjection moulding
dc.subjectMechanical properties
dc.titleCHEMICAL MODIFICATION EFFECT on THE MECHANICAL PROPERTIES of HIPS/COCONUT FIBER COMPOSITES
dc.typeOtro


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