Improvement of bagasse fiber–cement composites by addition of bacterial nanocellulose: an inverse gas chromatography study

Mohammadkazemi, Fatemeh; Aguiar, Roberto; Cordeiro, Nereida

doi:10.1007/s10570-017-1210-4

Cited by 28 publications

(16 citation statements)

References 33 publications

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“…The high hydrogen bonding ability of the CNF, due to its high number of hydroxyl groups and specific and reactive surface compared to the fibers, favors both matrix–fiber and fiber–CNF interactions, as demonstrated by da Correia et al 2018 [81]. Thus, stress transfer bridges are formed at the fiber–matrix interface, which improves the bonding strength, MOE, and MOR and reduces the pull out of the fibers, as proved by Mohammadkazemi et al [92,93].…”

Section: Nanocelluloses In the Cement And Fiber-cement Industrymentioning

confidence: 92%

“…The Ca/Si ratio on the fiber surface was 5.5, half of that in the lumen (10.6), while in the case of C-FCC with BC it was 5.8, four times higher than inside the lumen (1.4). This demonstrates that the hydration products accumulate on the surface of the fibers coated with BC without entering the lumen [92].…”

Section: Nanocelluloses In the Cement And Fiber-cement Industrymentioning

confidence: 99%

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Nanocelluloses: Natural-Based Materials for Fiber-Reinforced Cement Composites. A Critical Review

et al. 2019

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Nanocelluloses (NCs) are bio-based nano-structurated products that open up new solutions for natural material sciences. Although a high number of papers have described their production, properties, and potential applications in multiple industrial sectors, no review to date has focused on their possible use in cementitious composites, which is the aim of this review. It describes how they could be applied in the manufacturing process as a raw material or an additive. NCs improve mechanical properties (internal bonding strength, modulus of elasticity (MOE), and modulus of rupture (MOR)), alter the rheology of the cement paste, and affect the physical properties of cements/cementitious composites. Additionally, the interactions between NCs and the other components of the fiber cement matrix are analyzed. The final result depends on many factors, such as the NC type, the dosage addition mode, the dispersion, the matrix type, and the curing process. However, all of these factors have not been studied in full so far. This review has also identified a number of unexplored areas of great potential for future research in relation to NC applications for fiber-reinforced cement composites, which will include their use as a surface treatment agent, an anionic flocculant, or an additive for wastewater treatment. Although NCs remain expensive, the market perspective is very promising.

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Section: Nanocelluloses In the Cement And Fiber-cement Industrymentioning

confidence: 92%

Section: Nanocelluloses In the Cement And Fiber-cement Industrymentioning

confidence: 99%

Nanocelluloses: Natural-Based Materials for Fiber-Reinforced Cement Composites. A Critical Review

et al. 2019

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“…We present the current state of the art in optimized nanocellulose properties and how these properties have been applied, illustrated with the most exciting recent examples. 339 . Depending on the way in which the bacterial nanocellulose was incorporated, the surface basicity, degree of hydration, surface roughness and fiber mineralization were favorably impacted.…”

Section: Properties and Applications Of Nanocellulosic Materialsmentioning

confidence: 99%

Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications

Thomas¹,

Raj²,

B³

et al. 2018

Chem. Rev.

1,262

752

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With increasing environmental and ecological concerns due to the use of petroleum based chemicals and products, the synthesis of fine chemicals and functional materials from natural resources is of great public value. Nanocellulose may prove to be one of the most promising green materials of modern times due to its intrinsic properties, renewability and abundance. In this review, we present nanocellulose-based materials from sourcing, synthesis, and surface modification of nanocellulose, to materials formation and applications. Nanocellulose can be sourced from biomass, plants or bacteria, relying of fairly simple, scalable and efficient isolation techniques. Mechanical, chemical, enzymatic treatments, or a combination of these, can be used to extract nanocellulose from natural sources. The properties of nanocellulose are dependent on the source, the isolation technique and potential subsequent surface transformations. Nanocellulose surface modification techniques are typically used to introduce either charged or hydrophobic moieties, and include: amidation, esterification, etherification, silylation, polymerization, urethanization, sulfonationand phosphorylation. Nanocellulose has excellent strength, Young's modulus, biocompatibility, and tunable self-assembly, thixotropic and photonic properties, which are essential for the applications of this material. Nanocellulose participates in the fabrication of a large range of nanomaterials and nanocomposites, including those based on polymers, metals, metal oxides and carbon. In particular, nanocellulose complements organic-based materials, where it imparts its mechanical properties to the composite. Nanocellulose is a promising material whenever material strength, flexibility and/or specific nanostructuring are required. Applications include functional paper, optoelectronics and antibacterial coatings, packaging, mechanically reinforced polymer composites, tissue scaffolds, drug delivery, biosensors, energy storage, catalysis, environmental remediation and 3 electrochemical controlled separation. Phosphorylated nanocellulose is a particularly interesting material, spanning a surprising set of applications in various dimensions including bone scaffolds, adsorbents, flame retardants and as a support for the heterogenization of homogeneous catalysts.

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“…Although the precipitation of these cement hydration products in the fiber vicinities increases the affinity of the fiber surface to cement matrix, the crystallization process due to mineralization corrodes the cellulose microfibrils and damages the bonding between the various fiber components [ 46 , 64 ]. Consequently, such composites displayed a predominant fiber rupture failure due to the embrittlement of the fiber, accompanied by a lower ductility and toughness as well as reduced flexural strength capacity [ 60 , 65 ]. Moreover, such changes are accompanied by partial degradation of plant fibers, resulting in the deterioration of the fiber–matrix bonding and compromising the durability properties of the composites [ 59 ].…”

Section: Interfacial Adhesion Between Plant Fibers and Cement And mentioning

confidence: 99%

A Review on Natural Fiber-Reinforced Geopolymer and Cement-Based Composites

et al. 2020

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The use of ecological materials for building and industrial applications contributes to minimizing the environmental impact of new technologies. In this context, the cement and geopolymer sectors are considering natural fibers as sustainable reinforcement for developing composites. Natural fibers are renewable, biodegradable, and non-toxic, and they exhibit attractive mechanical properties in comparison with their synthetic fiber counterparts. However, their hydrophilic character makes them vulnerable to high volumes of moisture absorption, thus conferring poor wetting with the matrix and weakening the fiber–matrix interface. Therefore, modification and functionalization strategies for natural fibers to tailor interface properties and to improve the durability and mechanical behavior of cement and geopolymer-based composites become highly important. This paper presents a review of the physical, chemical and biological pre-treatments that have been performed on natural fibers, their results and effects on the fiber–matrix interface of cement and geopolymer composites. In addition, the degradation mechanisms of natural fibers used in such composites are discussed. This review finalizes with concluding remarks and recommendations to be addressed through further in-depth studies in the field.

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Improvement of bagasse fiber–cement composites by addition of bacterial nanocellulose: an inverse gas chromatography study

Cited by 28 publications

References 33 publications

Nanocelluloses: Natural-Based Materials for Fiber-Reinforced Cement Composites. A Critical Review

Nanocelluloses: Natural-Based Materials for Fiber-Reinforced Cement Composites. A Critical Review

Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications

A Review on Natural Fiber-Reinforced Geopolymer and Cement-Based Composites

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