Effect of Biomolecules on the Nanostructure and Nanomechanical Property of Calcium-Silicate-Hydrate

Kamali, Mahsa; Ghahremaninezhad, Ali

doi:10.1038/s41598-018-27746-x

Cited by 26 publications

(12 citation statements)

References 63 publications

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“…Ratirotjanakul et al (2019) declared that the addition of amino acids makes it possible to accelerate the biodegradation process of nanomaterials in the human body [ 35 ]. It is important to note that Kamali and Ghahremaninezhad (2019) found that the addition of amino acids and proteins makes it possible to change the nanostructure and nanomechanical properties of calcium silicate hydrate [ 36 ]. This expands the potential uses of calcium silicate in medicine and biotechnology.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Calcium Silicate Nanoparticles Stabilized with Amino Acids

et al. 2023

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This work presents the development of a method for the synthesis of calcium silicate nanoparticles stabilized with essential amino acids. CaSiO3 nanoparticles were obtained through chemical precipitation. In the first stage, the optimal calcium-containing precursor was determined. The samples were examined using scanning electron microscopy. It was found that Ca(CH3COO)2 was the optimal calcium-containing precursor. Then, the phase composition of calcium silicate was studied using X-ray phase analysis. The results showed the presence of high-intensity bands in the diffractogram, which characterized the phase of the nanosized CaSiO3—wollastonite. In the next stage, the influence of the type of amino acid on the microstructure of calcium silicate was studied. The amnio acids studied were valine, L-leucine, L-isoleucine, L-methionine, L-threonine, L-lysine, L-phenylalanine, and L-tryptophan. The analysis of the SEM micrographs showed that the addition of amino acids did not significantly affect the morphology of the CaSiO3 samples. The surface of the CaSiO3 samples, both without a stabilizer and with amino acids, was represented by irregularly shaped aggregates consisting of nanoparticles with a diameter of 50–400 nm. Further, in order to determine the optimal amino acid to use to stabilize nanoparticles, computerized quantum chemical modeling was carried out. Analysis of the data obtained showed that the most energetically favorable interaction was the CaSiO3–L-methionine configuration, where the interaction occurs through the amino group of the amino acid; the energy value of which was −2058.497 kcal/mol. To confirm the simulation results, the samples were examined using IR spectroscopy. An analysis of the results showed that the interaction of calcium silicate with L-methionine occurs via the formation of a bond through the NH3+ group of the amino acid.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Calcium Silicate Nanoparticles Stabilized with Amino Acids

et al. 2023

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“…Ventol et al 17 demonstrated that the addition of adhesive protein enhanced the compressive strength and decreased the porosity of lime mortars. The interaction between proteins, amino acids, and calcium silicate hydrate, which constitutes the primary binding phase in cementitious materials was also examined by Kamali et al 18 Prior studies investigated the properties of the proteins, bovine serum albumin (BSA) and human serum albumin, as binders in developing biocomposites for space construction applications. 19 While the concept of biocementation for crack healing of cementitious materials has been extensively studied in the past, 7,11 the effect of organic biomolecules in the biocementation process for the crack healing of cementitious materials has not received attention and is not fully understood.…”

Section: Introductionmentioning

confidence: 99%

“…Ventol et al demonstrated that the addition of adhesive protein enhanced the compressive strength and decreased the porosity of lime mortars. The interaction between proteins, amino acids, and calcium silicate hydrate, which constitutes the primary binding phase in cementitious materials was also examined by Kamali et al Prior studies investigated the properties of the proteins, bovine serum albumin (BSA) and human serum albumin, as binders in developing biocomposites for space construction applications …”

Section: Introductionmentioning

confidence: 99%

Crack Binding and Filling Properties of Modified Proteins in Sustainable Cementitious Materials

Baffoe,

Ghahremaninezhad

2023

ACS Appl. Eng. Mater.

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This study aims to investigate the effect of two modifying agents, sodium dodecyl sulfate (SDS) and lignin, on the properties of five different proteins and their crack binding and filling in the cementitious surface. The molecular structure and physicochemical properties of the modified proteins were examined using Fourier transform infrared (FTIR), differential scanning calorimetry, ζ-potential, and surface tension measurements. The binding between the modified proteins and the cementitious surface was evaluated using the interfacial shear lap test. The effect of the modified proteins on crack filling and healing of cementitious materials was studied by using flexural testing, optical microscopy, and X-ray microcomputed tomography. FTIR showed reduced intensities of the amide groups in the molecular structure of the modified proteins compared with the unmodified proteins. Proteins showed an increased viscosity in the synthetic pore solution (SPS) compared to that in deionized water, due to protein unfolding at a high pH of the SPS and subsequently cross-linking via Ca2+ bridging. Modifying with SDS generally increased the viscosity of the proteins due to increased cross-linking, while lignin did not seem to change viscosity. The proteins modified with SDS and lignin exhibited a general increase in interfacial shear strength between the modified proteins and the cementitious surface. It was found that modifying the protein sodium bovine immunoglobulin with SDS enhanced the crack healing and filling in cementitious materials, while modifying with lignin was not effective.

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“…Using tobermorite-like crystals, Matsuyuma [ 17 , 18 ] proposed the insertion of polymers into a C-S-H structure for the first time. Subsequent studies have shown that various polymers have been used to insert in the layer of C-S-H, such as polyvinyl alcohol (PVA) [ 19 ], polyethylene glycol (PEG) [ 20 , 21 ], polyacrylamide (PAM) [ 22 ], polyaniline (PAN) [ 23 , 24 , 25 ], polyacrylic acid (PAA) [ 26 ], and protein [ 27 ]. Some scholars demonstrate that at nanoscale, inserting polymers into C-S-H structures produces more superior properties than the classical C-S-H obtained in the hydrates [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties Evaluation of Polymer-Binding C-S-H Structure from Nanoscale to Macroscale: Hydroxyl-Terminated Polydimethylsiloxane (PDMS) Modified C-S-H

et al. 2022

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Exploring and modifying the C-S-H structure at a micro–nano level is an effective solution to improve the performance of Portland cement. Compared with organics inserting C-S-H, the research on the performance of a polymer-binding C-S-H structure from nanoscale to macroscale is limited. In this work, the mechanical properties of a modified C-S-H, using hydroxyl-terminated polydimethylsiloxane (PDMS) as the binders, are evaluated. The PDMS-modified C-S-H structures are introduced into macro-defect-free cement to obtain stress–strain curves changes at a macro scale. The AFM–FM was adopted to measure the morphology and elastic modulus of C-S-H at a nano scale. The molecular dynamics (MD) simulation was performed to assess the toughness, tensile properties, and failure mechanism. The results show that the PDMS-modified C-S-H powders change the break process and enhance ductility of MDF cement. The elastic modulus of PDMS-modified C-S-H is lower than pure C-S-H. When PDMS molecules are located between the stacking crystal units, it can enhance the toughness of C-S-H aggregates. The PDMS-modified C-S-H stacking structure has better plasticity, and its tensile strains are higher than the pure C-S-H. PDMS molecules hinder the initial crack expansion, leading to the branching of the initial crack. In addition, the measurement of AFM–FM can identify and obtain the mechanical properties of basic units of C-S-H. This paper enhances the understanding of cement strength sources and modification methods.

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Effect of Biomolecules on the Nanostructure and Nanomechanical Property of Calcium-Silicate-Hydrate

Cited by 26 publications

References 63 publications

Synthesis and Characterization of Calcium Silicate Nanoparticles Stabilized with Amino Acids

Synthesis and Characterization of Calcium Silicate Nanoparticles Stabilized with Amino Acids

Crack Binding and Filling Properties of Modified Proteins in Sustainable Cementitious Materials

Mechanical Properties Evaluation of Polymer-Binding C-S-H Structure from Nanoscale to Macroscale: Hydroxyl-Terminated Polydimethylsiloxane (PDMS) Modified C-S-H

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