Fractographic and rheological characterizations of CF/PP-PE-copolymer composites tested in tensile

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dc.contributor.author da Silva Cirilo, Paula Helena [UNIFESP]
dc.contributor.author Nogueira, Clara Leal
dc.contributor.author Faulstich de Paiva, Jane Maria
dc.contributor.author Guerrini, Lilia Mueller [UNIFESP]
dc.contributor.author Candido, Geraldo Mauricio [UNIFESP]
dc.contributor.author Rezende, Mirabel Cerqueira [UNIFESP]
dc.date.accessioned 2020-07-17T14:02:22Z
dc.date.available 2020-07-17T14:02:22Z
dc.date.issued 2017
dc.identifier http://dx.doi.org/10.1590/0104-1428.2355
dc.identifier.citation Polimeros-Ciencia E Tecnologia. Sao Carlos, v. 27, n. 2, p. 108-115, 2017.
dc.identifier.issn 0104-1428
dc.identifier.uri https://repositorio.unifesp.br/handle/11600/54764
dc.description.abstract This work shows the fractographic study of fractured surfaces resulted from tensile tests of thermoplastic composites based on poly(propylene-co-ethylene) (PP-PE) and modified PP-PE copolymers reinforced with continuous carbon fibers (CF). The PP-PE matrix was modified with two agents called AM1 (based on maleic anhydride) and AM2 (containing an elastomeric agent), respectively. Three different laminates - CF/PP-PE, CF/PP-PE(AM1) and CF/PP-PE(AM2) were manufactured. The best tensile strength and elastic modulus results were determined for the CF/PP-PE(AM1) laminate (507.6 +/- 11.8 MPa and 54.7 +/- 2.4 GPa, respectively). These results show that the AM1 agent contributed to increase the physicochemical interaction between the CF and the PP-PE matrix. This condition provided a better loading transfer from matrix to the reinforcement. Scanning electron microscopy analyses of the fracture surfaces show the fractographic aspects of the samples and allow evaluating the fiber/matrix-interfacial adhesion. Poor adhesion is observed for the CF/PP-PE and CF/PP-PE(AM2) laminates with the presence of fiber impressions on the polymer rich regions and fiber surfaces totally unprotected of polymer matrix. On the other side, a more consistent adhesion is observed for the CF/PP-PE(AM1) laminate. This result is in agreement with the tensile test data and show the presence of a good interaction between the laminate constituents. The correlation of the mechanical and fractographic results with the curves of complex viscosity versus temperature of the studied polymer matrices shows that the matrix viscosity did not affect the wettability of the reinforcement. en
dc.description.sponsorship CNPq
dc.description.sponsorship CAPES/PVNS
dc.format.extent 108-115
dc.language.iso eng
dc.publisher Assoc Brasil Polimeros
dc.relation.ispartof Polimeros-Ciencia E Tecnologia
dc.rights Acesso aberto
dc.subject fractography en
dc.subject thermoplastic composite en
dc.subject carbon fiber en
dc.subject PP-PE en
dc.title Fractographic and rheological characterizations of CF/PP-PE-copolymer composites tested in tensile en
dc.type Artigo
dc.description.affiliation Univ Fed Sao Paulo Unifesp, Inst Ciencia & Tecnol, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliation ITA, Div Engn Aeronaut & Mecan, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliation Univ Fed Sao Carlos UFSCar, Ctr Ciencias Gestao & Tecnol, Sorocaba, SP, Brazil
dc.description.affiliationUnifesp Univ Fed Sao Paulo Unifesp, Inst Ciencia & Tecnol, Sao Jose Dos Campos, SP, Brazil
dc.description.sponsorshipID CNPq: 150697/2014-7
dc.description.sponsorshipID CNPq: 142314/2010-2
dc.description.sponsorshipID CNPq: 303287/2013-6
dc.identifier.file S0104-14282017000200108.pdf
dc.identifier.scielo S0104-14282017000200108
dc.identifier.doi 10.1590/0104-1428.2355
dc.description.source Web of Science
dc.identifier.wos WOS:000407389300003
dc.coverage Sao Carlos
dc.citation.volume 27
dc.citation.issue 2



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