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Abstract:

In this work, novel starch based nanocomposites containing very small quantities of multi-walled carbon nanotubes (MWCNTs) (0.027 wt% and 0.055 wt%) were developed. These materials exhibited highly improved tensile and impact properties as a consequence of wrapping the MWCNTs with a starch-iodine complex composed by the same starch of the matrix. Thus, good dispersion of the filler in the matrix and excellent adhesion between phases (as shown in FE-SEM micrographs) were achieved. Increments up to almost 70% in stiffness and 35% in ultimate tensile strength, keeping deformations higher than 80% without break were found. Therefore, tensile toughness also increased up to ∼50%. Enhancements of up to ∼100% in biaxial impact parameters (thickness related perforation energy and disc maximum strength values) were also observed. The significant improvements in all uniaxial tensile and biaxial impact properties obtained for such significantly low contents of filler, as a result of the type of functionalization used, have not been already reported in the literature and point out these biodegradable composites as a very appealing alternative to traditional materials for different applications. © 2010 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Starch/multi-walled carbon nanotubes composites with improved mechanical properties
Autor:Famá, L.M.; Pettarin, V.; Goyanes, S.N.; Bernal, C.R.
Filiación:LPandMC, Departamento de Física, Ciudad Universitaria (1428), Ciudad Autónoma de Buenos Aires, Argentina
IFIBA-CONICET, Argentina
Grupo de Materiales Avanzados, INTECIN (UBA-CONICET), Universidad de Buenos Aires, Av. Paseo Colón 850, C1063ACV, Ciudad Autónoma de Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Argentina
Grupo de Ciencia e Ingeniería de Polímeros, INTEMA (UNMdP-CONICET), Universidad Nacional de Mar Del Plata, Av. J.B. Justo 4302, B7608FDQ, Mar del Plata, Argentina
Palabras clave:Mechanical behavior; Nanocomposites; Starch/multi-walled carbon nanotubes; Biodegradable composites; Carbon nanotubes composites; Functionalizations; Impact property; Impact-parameter; Iodine complexes; matrix; Maximum strength; Mechanical behavior; Novel starches; Perforation energy; SEM micrographs; Starch/multi-walled carbon nanotubes; Tensile and impact properties; Tensile toughness; Traditional materials; Ultimate tensile strength; Fillers; Iodine; Mechanical engineering; Mechanical properties; Nanocomposites; Starch; Tensile strength; Multiwalled carbon nanotubes (MWCN)
Año:2011
Volumen:83
Número:3
Página de inicio:1226
Página de fin:1231
DOI: http://dx.doi.org/10.1016/j.carbpol.2010.09.027
Título revista:Carbohydrate Polymers
Título revista abreviado:Carbohydr Polym
ISSN:01448617
CODEN:CAPOD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01448617_v83_n3_p1226_Fama

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Citas:

---------- APA ----------
Famá, L.M., Pettarin, V., Goyanes, S.N. & Bernal, C.R. (2011) . Starch/multi-walled carbon nanotubes composites with improved mechanical properties. Carbohydrate Polymers, 83(3), 1226-1231.
http://dx.doi.org/10.1016/j.carbpol.2010.09.027
---------- CHICAGO ----------
Famá, L.M., Pettarin, V., Goyanes, S.N., Bernal, C.R. "Starch/multi-walled carbon nanotubes composites with improved mechanical properties" . Carbohydrate Polymers 83, no. 3 (2011) : 1226-1231.
http://dx.doi.org/10.1016/j.carbpol.2010.09.027
---------- MLA ----------
Famá, L.M., Pettarin, V., Goyanes, S.N., Bernal, C.R. "Starch/multi-walled carbon nanotubes composites with improved mechanical properties" . Carbohydrate Polymers, vol. 83, no. 3, 2011, pp. 1226-1231.
http://dx.doi.org/10.1016/j.carbpol.2010.09.027
---------- VANCOUVER ----------
Famá, L.M., Pettarin, V., Goyanes, S.N., Bernal, C.R. Starch/multi-walled carbon nanotubes composites with improved mechanical properties. Carbohydr Polym. 2011;83(3):1226-1231.
http://dx.doi.org/10.1016/j.carbpol.2010.09.027