Open AccessProcessing and properties of continuous and aligned curaua fibers incorporated polyester composites
Author(s) -
Sérgio Neves Monteiro,
Felipe Perissé Duarte Lopes,
Denise Cristina Oliveira Nascimento,
Aílton da Silva Ferreira,
K. G. Satyanarayana
Publication year - 2013
Publication title -
journal of materials research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.832
H-Index - 44
eISSN - 2214-0697
pISSN - 2238-7854
DOI - 10.1016/j.jmrt.2013.03.006
Subject(s) - materials science , composite material , fiber , scanning electron microscope , toughness , characterization (materials science) , synthetic fiber , matrix (chemical analysis) , flexural strength , fracture (geology) , nanotechnology
This paper presents systematic studies carried out on the processing and characterization of continuous and aligned curaua fibers-polyester composites. Laminates of these composites with (0 to 40 vol. %) curaua fibers were press-molded at room temperature, cured for 24hours and tested for strength properties. Resulting fracture surfaces were analyzed by scanning electron microscope. Composites showed high flexural properties, which is attributed to a complex mechanism of individual interaction of the microfibrils with the matrix during crack initiation and further propagation through a model of stress concentration due to the specific fiber/matrix interface geometry. Impact test results showed a remarkable increase in the notch toughness with the amount of incorporated curaua fibers, which is attributed to the difficulty of breaking down the fibers and preferential de-bonding of the fiber/matrix interface, which in turn contributes to an elevated absorbed energy
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