Applications of Lambert-Beer law in the preparation and performance evaluation of graphene modified asphalt

Huang, Gang; He, Junxi; Zhang, Xia; Feng, Manman; Yan, Tan; Lv, Chuncheng; Huang, Hao; Zhao, Jianhong

doi:10.1016/j.conbuildmat.2020.121582

Cited by 53 publications

(15 citation statements)

References 48 publications

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“…According to the Schatz calculation, the first band at 333 nm corresponds to out-of-plane quadrupole resonance, the second shoulder-shaped band around 465 nm indicates dipole resonances characteristic of triangular nanoparticles [ 54 ], and the third band with maximum absorption at 744 nm resembles the plasmonic surface characteristic of the resonance band of almost perfectly triangular nanoparticles [ 54 , 55 ]. According to Mie’s hypothesis [ 56 ], anisotropic particles should be present because they have three absorption bands [ 55 ]. Furthermore, the colloidal solution of AgNPs acquired a blue color after synthesis, which can be attributed to the plasmonic excitation of the surface of triangular-shaped nanoparticles (nanoplates) [ 57 ].…”

Section: Resultsmentioning

confidence: 99%

Physicochemical, Morphological, and Cytotoxic Properties of Brazilian Jackfruit (Artocarpus heterophyllus) Starch Scaffold Loaded with Silver Nanoparticles

Rodrigues

Azevedo

Medeiros

et al. 2023

JFB

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Due to the physical, thermal, and biological properties of silver nanoparticles (AgNPs), as well as the biocompatibility and environmental safety of the naturally occurring polymeric component, polysaccharide-based composites containing AgNPs are a promising choice for the development of biomaterials. Starch is a low-cost, non-toxic, biocompatible, and tissue-healing natural polymer. The application of starch in various forms and its combination with metallic nanoparticles have contributed to the advancement of biomaterials. Few investigations into jackfruit starch with silver nanoparticle biocomposites exist. This research intends to explore the physicochemical, morphological, and cytotoxic properties of a Brazilian jackfruit starch-based scaffold loaded with AgNPs. The AgNPs were synthesized by chemical reduction and the scaffold was produced by gelatinization. X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM-EDS), and Fourier-transform infrared spectroscopy (FTIR) were used to study the scaffold. The findings supported the development of stable, monodispersed, and triangular AgNPs. XRD and EDS analyses demonstrated the incorporation of silver nanoparticles. AgNPs could alter the scaffold’s crystallinity, roughness, and thermal stability without affecting its chemistry or physics. Triangular anisotropic AgNPs exhibited no toxicity against L929 cells at concentrations ranging from 6.25 × 10−5 to 1 × 10−3 mol·L−1, implying that the scaffolds might have had no adverse effects on the cells. The scaffolds prepared with jackfruit starch showed greater crystallinity and thermal stability, and absence of toxicity after the incorporation of triangular AgNPs. These findings indicate that jackfruit is a promising starch source for developing biomaterials.

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Section: Resultsmentioning

confidence: 99%

Physicochemical, Morphological, and Cytotoxic Properties of Brazilian Jackfruit (Artocarpus heterophyllus) Starch Scaffold Loaded with Silver Nanoparticles

Rodrigues

Azevedo

Medeiros

et al. 2023

JFB

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“…According to the Schatz calculation, the first band at 333 nm corresponds to out-of-plane quadrupole resonance; the second shoulder-shaped band around 465 nm indicates dipole resonances characteristic of triangular nanoparticles [36]; and the third band with maximum absorption at 744 nm resembles the plasmonic surface characteristic of the resonance band of almost perfect triangular nanoparticles [36,37]. According to Mie's hypothesis, anisotropic particles should be present because they have three absorption bands [37,38]. Furthermore, the colloidal solution of AgNPs acquires a blue color after synthesis, which can be attributed to the plasmonic excitation of the surface of triangular-shaped nanoparticles (nanoplates) [39,40].…”

Section: Characterization Of the Silver Nanoparticles (Agnps)mentioning

confidence: 99%

“…Starch is a low-cost, biodegradable, biocompatible, and natural polymer widely used 36 in fabricating scaffolds [5][6][7][8]. Amylose (glucose units joined by α-1,4-glycosidic bonds) 37 and amylopectin (glucose units linked by glycosidic bonds at α-1,4 and α-1,6 carbons) 38 chains make up starch's molecular structure [9]. Starch, like other polysaccharides and 39 proteins, is a thermoplastic polymer composed of linear chains linked by weak bonds and 40 capable of being processed into membranes [10], gels [11], nanofibers [12], microparticles 41 [13], nanoparticles [14], and scaffolds [6].…”

Section: Introductionmentioning

confidence: 99%

Physicochemical, Morphological and Cytotoxic properties of Brazilian Jackfruit (Artocarpus Eterophyllus) Starch Scaffold loaded with Silver Nanoparticles

Rodrigues¹,

Azevedo²,

Medeiros³

et al. 2022

Preprint

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Starch is a widespread natural polymer used in healthcare applications due to its low cost and antibacterial properties. The use of starch in its many forms and its sometimes combination with metallic nanoparticles have all contributed to the advancement of biomaterials. However, few studies have been conducted on biocomposites composed of jackfruit starch and silver nanopar-ticles (AgNPs). As a result, this research aims to study the physicochemical, morphological, and cytotoxic features of a Brazilian jackfruit (Artocarpus heterophyllus) starch-based scaffold loaded with AgNPs. Gelatinization and chemical reduction were used to synthesize the scaffold and AgNPs, respectively. X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM-EDS), and Fourier transform infrared spectroscopy (FTIR) were utilized to explore the properties. The findings supported the development of anisotropic, stable, monodispersed AgNPs. The presence of AgNPs in the scaffold matrix was revealed by XRD and SEM-EDS. AgNPs were found to modify the crystallinity, roughness, and thermal stability of the scaffold while leaving its chemical and physical characteristics unchanged. Finally, the scaffolds did not show adverse effects on the L929 cells.

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“…Tang et al studied the effect of GNPs on the hydration of C 3 S and found that GNPs could adsorb C 3 S, prolong the dissolution and induction periods of C 3 S, and delay hydration [ 28 ]. Bhojaraju et al studied the effect of different carbon-based materials, including graphene and graphene oxide, on the hydration kinetics of slag-modified cement and found that the improvement in compressive strength of cement-based materials stems from the increase in the degree of hydration [ 29 ]. Snellings et al studied the hydration kinetics of ternary cement composed of clinker, slag, and limestone with different water–cement ratios.…”

Section: Introductionmentioning

confidence: 99%

Influence of Graphene Nanoplates on Dispersion, Hydration Behavior of Sulfoaluminate Cement Composites

et al. 2022

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Sulfoaluminate cement (SAC) is a low carbon ecological cement with good durability and is widely used in various projects. In addition, graphene nanoplates (GNPs) have excellent thermal, electrical, and mechanical properties and are excellent nano-filler. However, the hydration behavior of GNPs on SAC is still unclear. In this paper, the effect of GNPs on SAC hydration was investigated by isothermal calorimetry, and the hydration kinetic model and hydration kinetic equation of SAC was established, explaining the differences in cement hydration processes with and without GNPs on SAC based on a hydration kinetic model. Results indicate that the hydration exotherm of SAC mainly includes five stages: the initial stage, the induction stage, the acceleration stage, the deceleration stage, and the stable stage. The addition of GNPs promoted the hydration exotherm of SAC and accelerated the hydration reaction. Different from the hydration reaction of Portland cement, the hydration reaction of SAC is mainly a diffusion–reaction process.

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Applications of Lambert-Beer law in the preparation and performance evaluation of graphene modified asphalt

Cited by 53 publications

References 48 publications

Physicochemical, Morphological, and Cytotoxic Properties of Brazilian Jackfruit (Artocarpus heterophyllus) Starch Scaffold Loaded with Silver Nanoparticles

Physicochemical, Morphological, and Cytotoxic Properties of Brazilian Jackfruit (Artocarpus heterophyllus) Starch Scaffold Loaded with Silver Nanoparticles

Physicochemical, Morphological and Cytotoxic properties of Brazilian Jackfruit (Artocarpus Eterophyllus) Starch Scaffold loaded with Silver Nanoparticles

Influence of Graphene Nanoplates on Dispersion, Hydration Behavior of Sulfoaluminate Cement Composites

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