Mechanical properties of luffa sponge

Shen, Jianhu; Xie, Yi Min; Huang, Xiaodong; Zhou, Shiwei; Ruan, Dong

doi:10.1016/j.jmbbm.2012.07.004

Cited by 139 publications

(88 citation statements)

References 35 publications

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“…During the process of hundreds of million years of evolution, nature has already developed the ability to turn brittleness into toughness by combining ceramic and organic matter into hybrid composites, which exhibit much enhanced strength in comparison to their constituents. [33,34] Examples include wood, [1] bone, [35,36] sponge, [37] nacre, [38] crustaceans, and exoskeleton of arthropods. [39,40] As a typical example, crustacean cuticle was formed from a chitin-protein organic template, mineralized by calcium phosphate and calcium carbonate, resulting a composite structure comprised of organic core and inorganic shell, whose stiffness (>5 GPa) and hardness (>100 MPa) exceed constituent material.…”

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confidence: 99%

Mechanical Properties of Diamond‐Structured Polymer Microlattices Coated with the Silicon Nitride Film

et al. 2015

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Inspired by crystal structures of the diamond and polymer/ceramic core-shell structures of hard biological materials, diamond-structured polymer/SiN microlattices with enhanced mechanical properties have been fabricated by 3D printing and plasma enhanced chemical vapor deposition method. It is found that the compressive strength of the resultant microlattices improves with increasing silicon nitride film thickness and can reach 1.95 MPa at the thickness of 400 nm, which is 3.4 times higher than the pure polymer, but a little increase of 4.8% in density, which is only 169.2 kg m À3 . The work may provide a simplified and feasible avenue to improve the strength of low density materials.Lightweight cellular materials have wide applications in fields of aerospace, transportation, and architecture, due to their unique properties such as acoustic absorption, [1,2] energy absorption, [3] thermal insulation, [4] and shock or vibration damping. [5] Human have created numerous lightweight cellular materials, including honeycombs, [6,7] aerogels, [8][9][10] foams, [11][12][13][14][15] microlattices. [16] Microlattices are a new class of cellular materials possessing lower density and better mechanical performance than traditional random foams, because of the order and periodicity in structure. There have been many studies on microlattices with different constituent, like polymer, [17,18] metal, [19][20][21] ceramic, [22][23][24][25] and graphene. [26] The structure of lattices is formed by repeating a unit cell with specific geometry periodically in three dimensions, so, the density and mechanical performance of the lattices depend strongly on the cell geometry including shape, size, and structural hierarchy. [27][28][29] Among common topologies used to produce structure materials, the diamond structure is preferred for attaining high strength and lower density materials for its special configuration, which exhibits high spatial symmetry and strong stability to resist deformation. [30][31][32] The strength of lattice materials is determined not only by the architecture but also by the constituent materials. Among numerous engineering materials, ceramics have the highest strength and stiffness. Furthermore, silicon nitride is one of the materials with highest hardness in nature, which belongs to atomic crystal. However, ceramics are limited for applications because of their brittleness. During the process of hundreds of million years of evolution, nature has already developed the ability to turn brittleness into toughness by combining ceramic and organic matter into hybrid composites, which exhibit much enhanced strength in comparison to their constituents. [33,34] Examples include wood, [1] bone, [35,36] sponge, [37] nacre, [38] crustaceans, and exoskeleton of arthropods. [39,40] As a typical example, crustacean cuticle was formed from a chitin-protein organic template, mineralized by calcium phosphate and calcium carbonate, resulting a composite structure comprised of organic core and inorganic shell, whose stiffness (>5 G...

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Mechanical Properties of Diamond‐Structured Polymer Microlattices Coated with the Silicon Nitride Film

et al. 2015

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“…The good specific energy absorption of luffa sponge is attributed partially to its light base material as well as a higher densification strain. Due to the high strength-to-weight ratio of cellular materials, luffa sponge can be used as a good packaging material and an excellent energy dissipation material (Shen et al 2012). …”

Section: Fiber Preparationmentioning

confidence: 99%

Processing and Characterization of Epoxy/Luffa Composites: Investigation on Chemical Treatment of Fibers on Mechanical and Acoustical Properties

et al. 2014

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This study focuses on the development of epoxy/luffa composites and the investigation of their mechanical and acoustical properties. The fibers underwent an alkalization treatment, and its effects on the mechanical and sound absorption properties of the composites were measured utilizing a universal testing machine and two-microphone transfer function impedance tube methods. The effects of chemical modifications on the fibers were studied using a scanning electron microscope (SEM). The thermal analyses of composites were conducted using thermo-gravimetric analysis (TGA). The composite's functional group was identified and evaluated using Fourier transform infrared spectroscopy (FTIR). The sound absorption coefficient of untreated and treated composites across a range of frequencies was very similar. Untreated composites appeared to perform better than those that were treated. Compared with untreated fiber composites, there was an improvement in the tensile strength of the treated fiber composites. The SEM characterization showed that the alkaline treatment changed the morphology of the fibers, resulting in a decrease in the sound absorption coefficients of the composites. The thermal characterization of composites showed that dehydration and degradation of lignin occurred in a temperature range of 40 to 260 °C, and the maximum percentage of cellulose was found to decompose at 380 °C.

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“…There have been some studies on the morphology, thermodynamics, energy absorption, and elastic properties of luffa materials (Boynard and D'Almeida 2000;Chen and Lin 2005;Paglicawan et al 2005;Zampieri et al 2006;Demir et al 2008;Kocak 2008;Ghali et al 2009;Satyanarayana et al 2009;Seki et al 2012;Shen et al 2012Shen et al , 2013Kocak et al 2013;Genc 2015;Genc and Koruk 2016a). Koruk and Genc (2015) showed that the sound absorption of luffa composites is considerably high.…”

Section: Introductionmentioning

confidence: 99%

Identification of the Dynamic Characteristics of Luffa Fiber Reinforced Bio-Composite Plates

Genc¹,

Körük²

2017

BioResources

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Luffa cylindrica plant fiber is a new biodegradable engineering material. However, the dynamic behaviors of these new green materials or their composites should be explored to consider them for practical applications. The dynamic characteristics including modal behavior and the elastic and sound isolation properties of luffa-based bio-composite plates were explored in this study. Structural frequency response function measurements were conducted using a few luffa bio-composite plates to identify their modal behavior. The modal frequencies and loss factors of the luffa bio-composite plates were identified by analyzing the frequency response function measurements using a few modal analysis methods such as half-power, circle-fit, and line-fit. The same luffa bio-composite structures were modelled using a finite element formulation with damping capability, and the elastic moduli of the composite plates were identified. In addition, the transmission loss levels of the same luffa composite samples were measured using the impedance tube method. The results showed that luffa composite structures have considerably high stiffness (elasticity modulus: 2.5 GPa), damping levels (loss factor: 2.6%), and transmission loss level (25 to 30 dB for a 1 cm thickness), and their mechanical properties are promising as an alternative disposable material for noise and vibration control engineering applications.

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Mechanical properties of luffa sponge

Cited by 139 publications

References 35 publications

Mechanical Properties of Diamond‐Structured Polymer Microlattices Coated with the Silicon Nitride Film

Mechanical Properties of Diamond‐Structured Polymer Microlattices Coated with the Silicon Nitride Film

Processing and Characterization of Epoxy/Luffa Composites: Investigation on Chemical Treatment of Fibers on Mechanical and Acoustical Properties

Identification of the Dynamic Characteristics of Luffa Fiber Reinforced Bio-Composite Plates

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