Mechanical characterization of single bamboo fibers with nanoindentation and microtensile technique

Yu, Yan; Tian, Guohui; Wang, Hankun; Fei, Benhua; Wang, Ge

doi:10.1515/hf.2011.009

Cited by 120 publications

(43 citation statements)

References 33 publications

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“…The Moso nanoindentation reduced modulus values obtained are on the lower end of literature values, which range from about 14 to 20 GPa (X. Yu et al, 2011Yu et al, , 2007. This difference may be attributed to the relatively simple sample preparation method used in the current work.…”

Section: Nanoscale: Nanoindentation Chemical Composition X-ray Scatmentioning

confidence: 65%

Comparison of the structure and flexural properties of Moso, Guadua and Tre Gai bamboo

Dixon

Ahvenainen

Aijazi

et al. 2015

Construction and Building Materials

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Bamboo is an underutilized resource widely available in countries with rapidly developing economies. Structural bamboo products, analogous to wood products, allow flexibility in the shape and dimensions of bamboo structural members. Here, the ultrastructure, microstructure, cell wall properties and flexural properties of three species of bamboo (Moso, Guadua and Tre Gai) are compared. At a given density, the axial modulus of elasticity of Guadua is higher than that of Moso or Tre Gai, which are similar; ultrastructural results suggest that Guadua has a higher solid cell wall stiffness. At a given density, their moduli of rupture are similar.

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Section: Nanoscale: Nanoindentation Chemical Composition X-ray Scatmentioning

confidence: 65%

Comparison of the structure and flexural properties of Moso, Guadua and Tre Gai bamboo

Dixon

Ahvenainen

Aijazi

et al. 2015

Construction and Building Materials

View full text Add to dashboard Cite

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“…The verification of the area where the imprints of the indenter were carried out is a very important task for displaying the homogeneity of the mechanical characterization of the fiber, because the longitudinal elastic modulus and the projected area of the imprint are highly dependent on the focus of the microfibril angle (Yu et al 2011). With respect to the mechanical properties, the hardness (H) of Ulex europaeus fiber, especially if measured in the S2 layer, is an important parameter that is also directly related to the resistance to permanent plastic deformation of the materials.…”

Section: Results Of Nanoindentationmentioning

confidence: 99%

Characterizing Cellulosic Fibers from Ulex europaeus

Celis¹,

Torres²,

Valenzuela³

et al. 2014

BioResources

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Information on the morphological and physical properties of biofibers is necessary to support the mechanical understanding of the biological design of plants, as well as for the development of new technology that adds value to non-traditional bioresources, such as those based on Ulex europaeus fibers. Ulex europaeus fibers were extracted through a chemical pulping process at 170 °C and with 40 g/L NaOH. The dimensions of the fibers produced were 0.97 ± 0.1 mm in length and 13 ± 2 μm in diameter. Pressed fiber paper sheets were made to evaluate their mechanical properties. Burst and tear indices of 1.2 mN/kg and 8.6 Nm 2 /kg, respectively, were recorded. The values obtained did not compare well to fiber paper sheets from Pinus radiata, presumably due to the significant amount of non-structural elements of wood present in the samples and the lower length of Ulex europaeus fibers, which resulted in lower tensile strength. Additionally, nanoindentation tests were conducted to assess the hardness and elastic modulus of the fibers, obtaining average values of 0.84 GPa and 9.23 GPa for the stem, respectively. These values were significantly lower than those of industrial biofiber, perhaps due to the lower morphogenic maturity of Ulex europaeus fibers compared to other traditional sources of fiber.

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“…Only a few studies have been performed on mechanical properties of fibres or fibre caps [13][14][15], and the underlying structureproperty relationships of bamboo fibres that establish the gradients across the fibre caps are not well understood yet.…”

Section: Introductionmentioning

confidence: 99%

Cell wall structure and formation of maturing fibres of moso bamboo ( Phyllostachys pubescens ) increase buckling resistance

Wang

Ren

Zhang

et al. 2011

J. R. Soc. Interface.

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127

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The mechanical stability of the culms of monocotyledonous bamboos is highly attributed to the proper embedding of the stiff fibre caps of the vascular bundles into the soft parenchymatous matrix. Owing to lack of a vascular cambium, bamboos show no secondary thickening growth that impedes geometrical adaptations to mechanical loads and increases the necessity of structural optimization at the material level. Here, we investigate the fine structure and mechanical properties of fibres within a maturing vascular bundle of moso bamboo, Phyllostachys pubescens, with a high spatial resolution. The fibre cell walls were found to show almost axially oriented cellulose fibrils, and the stiffness and hardness of the central part of the cell wall remained basically consistent for the fibres at different regions across the fibre cap. A stiffness gradient across the fibre cap is developed by differential cell wall thickening which affects tissue density and thereby axial tissue stiffness in the different regions of the cap. The almost axially oriented cellulose fibrils in the fibre walls maximize the longitudinal elastic modulus of the fibres and their lignification increases the transverse rigidity. This is interpreted as a structural and mechanical optimization that contributes to the high buckling resistance of the slender bamboo culms.

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Mechanical characterization of single bamboo fibers with nanoindentation and microtensile technique

Cited by 120 publications

References 33 publications

Comparison of the structure and flexural properties of Moso, Guadua and Tre Gai bamboo

Comparison of the structure and flexural properties of Moso, Guadua and Tre Gai bamboo

Characterizing Cellulosic Fibers from Ulex europaeus

Cell wall structure and formation of maturing fibres of moso bamboo ( Phyllostachys pubescens ) increase buckling resistance

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