A facile approach of developing micro crystalline cellulose reinforced cementitious composites with improved microstructure and mechanical performance

Silva, Lívia; Parveen, Shama; Filho, Aloysio; Zottis, Amanda; Rana, Sohel; Vanderlei, Romel Dias; Fangueiro, Raúl

doi:10.1016/j.powtec.2018.07.076

Cited by 24 publications

(18 citation statements)

References 31 publications

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“…The short ultrasonic treatment for 15 min used in this research could not effectively remove the MCC agglomerates without using CTAB surfactant. Previous studies which showed a positive effect of MCC on the flexural strength of cementitious composites either used longer durations of ultrasonication/mechanical stirring or used surfactants (Parveen et al 2017b(Parveen et al , 2018Silva et al 2018). It can also be noticed that the use of only sisal fibers (0.25 wt% and 0.5 wt%) led to decrease in both compressive and flexural strengths, as also reported in the existing literature.…”

Section: Compressive and Flexural Strengthssupporting

confidence: 74%

“…Earlier studies on MCC and CNT-based and MCC-CNT hierarchical cementitious composites also reported intense Ca(OH) 2 peaks in the XRD spectra due to better hydration and formation of higher amount of hydration products (Parveen et al 2015(Parveen et al , 2017b(Parveen et al , 2018Alshaghel et al 2018;Silva et al 2018). It was also interesting to note that the peaks near 25°and 40°disappeared in the composite sample.…”

Section: Hydration Behavior Of Plain Mortar and Cementitious Compositesmentioning

confidence: 71%

“…This confirmed the formation of a better microstructure in case of hierarchical composites as also confirmed from the TGA analysis. Earlier studies also reported lower average pore size in case of CNT, NCC, MCC and CNT-MCC hierarchical composites (Parveen et al 2015(Parveen et al , 2017b(Parveen et al , 2018Alshaghel et al 2018;Silva et al 2018;Wang et al 2020). While due to their nano-sized structure CNTs could reduce pore size of cementitious composites by their pore-filling effect (Parveen et al 2015;Chen et al 2019), the formation of higher amount of hydration products was the main reason behind improved microstructure of MCC based composites (Parveen et al 2017b(Parveen et al , 2018.…”

Section: Hydration Behavior Of Plain Mortar and Cementitious Compositesmentioning

confidence: 87%

“…Sisal fiber content, therefore, did not show any significant positive influence on compressive strength, as previously reported in other studies also (Fujiyama et al 2014). However, an increase in MCC % drastically reduced the compressive strength owing to MCC agglomeration (Parveen et al 2017b(Parveen et al , 2018Alshaghel et al 2018;Silva et al 2018), irrespective of the sisal fiber content. A similar trend was also observed in case of flexural strength, which was found to be inferior at higher MCC concentrations ([ 1 wt%).…”

Section: Compressive and Flexural Strengthsmentioning

confidence: 96%

“…However, it was observed that the reinforcing capability of MCC in cementitious composites was strongly dependent on the MCC dispersion state (Gómez Hoyos et al 2013;Parveen et al 2017bParveen et al , 2018. While direct mixing of MCC into cementitious composites (without any dispersion step) could not improve or even deteriorated the mechanical properties (Gómez Hoyos et al 2013), MCC dispersion using mechanical stirring and ultrasonication resulted in 20.5% and 19.2% improvements in flexural strength and 19.8% and 51.4% improvements in compressive strengths, respectively (Silva et al 2018;Parveen et al 2018). Moreover, an improved MCC dispersion using a non-ionic surfactant such as Pluronic F-127 further improved the mechanical properties of cementitious composites (flexural and compressive strength improved by 31% and 66%, respectively) (Parveen et al 2017b).…”

Section: Introductionmentioning

confidence: 99%

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Micro-structure and mechanical properties of microcrystalline cellulose-sisal fiber reinforced cementitious composites developed using cetyltrimethylammonium bromide as the dispersing agent

et al. 2021

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This paper reports new hierarchical cementitious composites developed using microcrystalline cellulose (MCC), sisal fibers and cetyltrimethylammonium bromide (CTAB) as the dispersing agent. MCC was dispersed in water without and with CTAB at different concentrations using ultrasonication and the optimum CTAB concentration for achieving homogeneous and stable MCC suspensions was found to be 40%. Hierarchical composites were fabricated using MCC (0.1–1.5 wt% of cement), sisal fibers (20 mm, 0.25% and 0.50 wt% of cement), 40% CTAB and tri-butyl phosphate as the defoaming agent. Mechanical strengths of composites improved significantly at 0.1 wt% MCC, which along with 0.5% sisal fibers improved compressive and flexural strengths by ~ 24% and ~ 18%, respectively. The hybrid reinforcement exhibited a synergistic effect on the fracture behavior of composites improving the fracture energy up to 40%. Hierarchical composites also showed improved fiber-matrix bonding, lower porosity and water absorption, superior hydration, carbonation resistance and durability up to 90 ageing cycles.

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Section: Compressive and Flexural Strengthssupporting

confidence: 74%

Section: Hydration Behavior Of Plain Mortar and Cementitious Compositesmentioning

confidence: 71%

Section: Hydration Behavior Of Plain Mortar and Cementitious Compositesmentioning

confidence: 87%

Section: Compressive and Flexural Strengthsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Micro-structure and mechanical properties of microcrystalline cellulose-sisal fiber reinforced cementitious composites developed using cetyltrimethylammonium bromide as the dispersing agent

et al. 2021

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Surface‐methacrylated microcrystalline cellulose bioresins with soybean oil for additive manufacturing via vat photopolymerization

Parikh,

Cortés‐Guzmán,

Bian

et al. 2024

Journal of Polymer Science

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The additive manufacturing (AM) industry increasingly looks to differentiate itself by utilizing materials and processes that are green, clean, and sustainable. Biopolymers, bio‐sourced raw materials and light weighting of parts 3D printed with photopolymer resins each represent critical directions for the future of AM. Here, we report a series of bio‐based composite resins with soybean oil derivatives, up to 20% by weight of surface‐methacrylated micro‐crystalline cellulose (MCC) and 60% total bio‐based content for vat photopolymerization based additive manufacturing. The ultimate tensile strengths of the materials were found to increase up to 3X, the Young's moduli increased up to 10X, and the glass transition temperature increased by 11.3°C when compared to the neat resin without surface‐methacrylated MCC as a filler. Working curves and shrinkage factors were used to demonstrate how the surface‐methacrylated MCC causes changes in the dimensions of printed parts, to facilitate development of optimized print parameters based on the UV intensity of the 3D printer being used. These results will allow further development of commercial 3D printable resins with a high concentration of bio‐based fillers that print well and perform on par with conventional resins.

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Influence of Nanofibrillated Cellulose (NFC) on the Mechanics of Cement Pastes

Souza

Silva

2021

RILEM Bookseries

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A facile approach of developing micro crystalline cellulose reinforced cementitious composites with improved microstructure and mechanical performance

Cited by 24 publications

References 31 publications

Micro-structure and mechanical properties of microcrystalline cellulose-sisal fiber reinforced cementitious composites developed using cetyltrimethylammonium bromide as the dispersing agent

Micro-structure and mechanical properties of microcrystalline cellulose-sisal fiber reinforced cementitious composites developed using cetyltrimethylammonium bromide as the dispersing agent

Surface‐methacrylated microcrystalline cellulose bioresins with soybean oil for additive manufacturing via vat photopolymerization

Influence of Nanofibrillated Cellulose (NFC) on the Mechanics of Cement Pastes

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