Effect of addition of carbon nanofibers and carbon nanotubes on properties of thermoplastic biopolymers

Sánchez-García, María; Lagaron, J. M.; Hoa, Suong V.

doi:10.1016/j.compscitech.2010.02.015

Cited by 155 publications

(127 citation statements)

References 22 publications

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“…Graphene, the new generation carbonaceous layered material has shown considerable potential as reinforcing material in polymer nanocomposites [27][28][29]. Though there are some research reports showing property improvements in biodegradable PHBV with the addition of carbon nanotubes [30] and carbon nanofibers [31] and utilization of graphene in poly(3-hydroxybutyrate, PHB) [32,33], graphene reinforced PHBV nanocomposites have never been reported. In this study we report a systematic study on the effect of addition of graphene on the morphology, thermal and dynamic mechanical properties of PHBV.…”

mentioning

confidence: 99%

Graphene reinforced biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) nano-composites

Sridhar¹,

Lee²,

Chun³

et al. 2013

Express Polym. Lett.

120

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Novel biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) [PHBV]/graphene nanocomposites were prepared by solution casting. The thermal properties, crystallization behavior, microstructure, and fracture morphology of the composites were investigated. Scanning electron microscope (SEM) results show that graphene layers are homogeneously dispersed in the polymer matrix. X-ray diffraction (XRD) and dynamic scanning calorimetry (DSC) studies show that the well dispersed graphene sheets act as nucleating agent for crystallization. Consequently, the mechanical properties of the composites have been substantially improved as evident from dynamic mechanical and static tensile tests. Differential thermal analysis (DTA) showed an increase in temperature of maximum degradation. Soil degradation tests of PHBV/graphene nanocomposites showed that presence of graphene doesn’t interfere in its biodegradability

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mentioning

confidence: 99%

Graphene reinforced biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) nano-composites

Sridhar¹,

Lee²,

Chun³

et al. 2013

Express Polym. Lett.

120

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“…Since the water uptake is related to the small network homogeneity, this trend may reflect the initial increase of the absorbed water. Furthermore, for 0.5-1% CNT concentration the absorption level diminishes to that of the pure epoxy [24], which may also account for the steady IH values of the highly loaded samples. Generally, IH of the CNT composites are lower than those of the CB sub-cured composites, which can be attributed to the water uptake that alters the network response to the mechanical perturbations.…”

Section: T G Calculation and Network Homogeneitymentioning

confidence: 95%

A detailed study of α-relaxation in epoxy/carbon nanoparticles composites using computational analysis

Stimoniaris¹,

Stergiou²,

Delides³

2012

Express Polym. Lett.

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Abstract. Nanocomposites were fabricated based on diglycidyl ether of bisphenol A (DGEBA), cured with triethylenetetramine (TETA) and filled with: a) high conductivity carbon black (CB) and b) amino-functionalized multiwalled carbon nanotubes (MWCNTs). The full dynamic mechanical analysis (DMA) spectra, obtained for the thermomechanical characterization of the partially cured DGEBA/TETA/CB and water saturated DGEBA/TETA/MWCNT composites, reveal a complex behaviour as the !-relaxation appears to consist of more than one individual peaks. By employing some basic calculations along with an optimization procedure, which utilizes the pseudo-Voigt profile function, the experimental data have been successfully analyzed. In fact, additional values of sub-glass transition temperature (T i ) corresponding to subrelaxation mechanisms were introduced besides the dominant process. Thus, the physical sense of multiple networks in the composites is investigated and the glass transition temperature T g is more precisely determined, as the DMA !-relaxation peaks can be reconstructed by the accumulation of individual peaks. Additionally, a novel term, the index of the network homogeneity (IH), is proposed to effectively characterize the degree of statistical perfection of the network.

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“…Among these applications the oxide of nanozinc and nanomagnesium are expected to be affordable and safer solutions for food packaging in a near future (Lepot et al, 2011;Li et al, 2010). Also carbon nanotubes (Sánchez-García et al, 2010a) or nanoparticles of SiO 2 have been used for improving mechanical and barrier properties of several polymeric matrices (Vladimiriov et al, 2006). The use as reinforcement elements of biodegradable cellulosic nanowhiskers and nanostructures obtained by electrospinning (Goffin et al, 2011;López-Rubio et al, 2007;Siqueira et al, 2009;Torres-Giner et al, 2008) must be highlighted too.…”

Section: Nanomaterials To Improve Packaging Propertiesmentioning

confidence: 99%

Nanotechnology and Food Industry

Gutiérrez¹,

Mussons²,

Gatón³

et al. 2012

Scientific, Health and Social Aspects of the Food Industry

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Effect of addition of carbon nanofibers and carbon nanotubes on properties of thermoplastic biopolymers

Cited by 155 publications

References 22 publications

Graphene reinforced biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) nano-composites

Graphene reinforced biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) nano-composites

A detailed study of α-relaxation in epoxy/carbon nanoparticles composites using computational analysis

Nanotechnology and Food Industry

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