Microstructure Of Blends Research Articles

Effect of coal fly ash and CO2 curing on performance of magnesium potassium phosphate cement

This study explores the combined effects of coal fly ash (FA) and CO2 curing on the flexural strength, compressive strength, and water resistance of magnesium potassium phosphate cement (MKPC). Additionally, the hydration products and microstructure of MKPC and MKPC-FA blends are examined using X-ray diffraction (XRD), thermogravimetric analysis (TGA), mercury injection porosity (MIP), and scanning electron microscopy (SEM). The results demonstrate that carbonation curing effectively improves the mechanical strength and water resistance of MKPC-FA blends by refining the pore structure and reducing porosity. Incorporating fly ash into magnesium phosphate cement leads to a longer setting time and appropriate enhancement in the water resistance of MKPC-FA blends. It should be mentioned that the mechanical strength of MKPC-FA blends declines with increasing fly ash content, and carbonation curing can partially ameliorate these negative effects. Therefore, both incorporating fly ash and storing carbon dioxide have positive effects on the durability and environmental sustainability aspects associated with MKPC preparation.

Hydration, phase assemblage and microstructure of cementitious blends with low-grade limestone

Limestone of the purity mandated by the standards for use in cement manufacture (as raw material or as performance improver) is only a fraction of the mined material. Sometimes, limestone contains impurities like silica, clay, dolomite etc. beyond the levels specified for use as an additive or for cement production. This limestone, commonly known as low-grade limestone, also may have a potential to be used as a supplementary cementitious material. This paper reports a study conducted to understand the hydration behaviour of ordinary Portland cement in combination with low-grade limestone. Low-grade limestone samples with dolomite, silica and clay impurities were collected from various limestone mines in India and used in cementitious blends at various replacement levels after suitable processing. Reaction kinetics was studied using calorimetry and phase assemblage using techniques like X-ray diffraction and thermogravimetry. Mercury intrusion porosimetry was employed to study the microstructure of cementitious blends. Dilution effect of low-grade limestone was studied by measuring compressive strength of cement mortar cubes for various replacement levels. Shortening of induction period, increased peak heat rate and reduced time to peak were observed in the blends of ordinary Portland cement with low-grade limestone. Carboaluminate formation, ettringite stabilisation and higher bound water content were also seen. The studies showed that low-grade limestone also can be used as a partial replacement for ordinary Portland cement without compromising the strength up to 15% replacement. Higher replacement levels, although showing a reduction in strength due to dilution effect, could still be considered for non-structural applications.

One-part alkali-activated GGBFS as a cement for enhancing compacted filtered iron ore tailings disposal by stacking

Brazil is one of the top world iron ore producers. However, it implies the generation of millions of tons of iron ore tailings (IOTs). Dewatering technologies now permit the obtainment of a compactable geomaterial rather than the slurry consistency tailings that were commonly stored in impoundments. Thus, this filtered compacted geomaterial can be stacked in piles. In this regard, the incorporation of small amounts of cement into the filtered tailings has the potential to strengthen the geomaterial. By using alkali-activated binders, strengthening the IOTs’ mechanical properties can be achieved with minimum environmental drawbacks. Accordingly, the present study evaluates the strength, mineralogy, and microstructure of compacted iron ore tailings-binder blends. A one-part alkali-activated cement (AAC) composed of ground granulated blast furnace slag (a residue of steel industry), sodium silicate, and sodium hydroxide was used, highlighting the circular economy appeal of this cement. A response surface approach was used in the definition of this cement’s composition. As well, tests using a commercially available high early-strength Portland cement were conducted. The optimized AAC outperformed the early strength Portland cement regardless of the test conditions, associated with the formation of a more developed cementitious matrix (C-S-H and C-A-S-H gel of amorphous structure).

Digital Light Processing Route for 3D Printing of Acrylate-Modified PLA/Lignin Blends: Microstructure and Mechanical Performance.

In this study, digital light processing (DLP) was utilized to generate 3D-printed blends composed of photosensitive acrylate-modified polylactic acid (PLA) resin mixed with varying weight ratios of lignin extracted from softwood, typically ranging from 5 wt% to 30 wt%. The microstructure of these 3D-printed blends was examined through X-ray microtomography. Additionally, the tensile mechanical properties of all blends were assessed in relation to the weight ratio and post-curing treatment. The results suggest that post-curing significantly influences the tensile properties of the 3D-printed composites, especially in modulating the brittleness of the prints. Furthermore, an optimal weight ratio was identified to be around 5 wt%, beyond which UV light photopolymerization experiences compromises. These findings regarding acrylate-modified PLA/lignin blends offer a cost-effective alternative for producing 3D-printed bio-sourced components, maintaining technical performance in reasonable-cost, low-temperature 3D printing, and with a low environmental footprint.

Study on the properties of nano-Fe3O4 modified asphalt materials based on molecular dynamics

Asphalt possesses the inherent ability to self-heal microcracks, with enhanced healing observed under active heating conditions. Nanomaterials have the capacity to alter the microstructure of asphalt blends, offering certain advantages in terms of asphalt performance. In this study, models of nano-Fe3O4 clusters and nano-Fe3O4/asphalt blending systems with varying particle sizes were established. Molecular dynamics simulations were employed to investigate the physical properties of nano-Fe3O4 and asphalt molecules at different temperatures, simulating the microwave heating process within a temperature range of 303 K to 373 K. The findings revealed that the diffusion coefficient of Fe3O4 clusters decreased with increasing particle size. Nonbonding interaction energy predominantly governed the binding between Fe3O4 clusters and asphalt molecules. The incorporation of nano-Fe3O4 was found to enhance the physical properties of asphalt. Peak values of the radius of gyration for asphaltene and aromatics indicated increased density, while asphaltene, colloids, and aromatics exhibited greater extensibility with the addition of nano-Fe3O4.

Interfacial network formation by casein blends in the presence of Ca2+ is dominated by β- and κ-casein

With the increasing interest in precision fermentation for food purposes, the opportunity arises to produce individual casein fractions or specific blends based on the requirements of an application. Therefore, the functionality of individual casein fractions has gained attention in academia and industry.This study focused on the air-water interfacial functionality of individual bovine casein fractions in casein blends, to serve as a benchmark for precision fermented casein fractions. With oscillating bubble tensiometry, we showed that the interfacial behavior of a milk-like casein blend of αs1-, αs2-, β-, &κ-casein (ratio 4:1.1:3.8:1.3) was dominated by the β- and κ-casein fractions through the formation of a disordered solid-like viscoelastic interface. The presence of Ca2+ in the buffer was essential; Without Ca2+, the casein blend formed a weak interfacial microstructure where the viscoelastic modulus was dominated by exchange between bulk and interface. The interfacial microstructure was imaged with Langmuir-Blodgett deposition followed by atomic force microscopy. Here we showed that the interfacial structure of β+κ-casein was highly similar to the milk-like casein blend. In the presence of Ca2+ in the buffer, the interfacial microstructure of the casein blend was shown to be more connected and homogeneous compared to a buffer without Ca2+. Thereby highlighting the importance of the phosphoserine residues in β-casein.These results show the opportunity to mimic the interfacial functionality of a milk-like casein blend with only a blend of β+κ-casein but that the presence of phosphoserine residues in β-casein is essential for the formation of a stiff interfacial network.

The Effect of Processing Conditions on the Microstructure of Homopolymer High-Density Polyethylene Blends: A Multivariate Approach.

In this work, a multivariate approach was utilized for gaining some insights into the processing-structure-properties relationships in polyethylene-based blends. In particular, two high-density polyethylenes (HDPEs) with different molecular weights were melt-compounded using a twin-screw extruder, and the effects of the screw speed, processing temperature and composition on the microstructure of the blends were evaluated based on a Design of Experiment-multilinear regression (DoE-MLR) approach. The results of the thermal characterization, interpreted trough the MLR (multilinear regression) response surfaces, demonstrated that the composition of the blends and the screw rotation speed are the two most important parameters in determining the crystallinity of the materials. Furthermore, the rheological data were examined using a Principal Component Analysis (PCA) multivariate approach, highlighting also in this case the most prominent effect of the weight ratio of the two base polymers and the screw rotation speed.

Detection of compatibilizer efficiency in conductive polymer blends by impedance spectroscopy: Microstructure evaluation approach

AbstractA novel approach of electrical impedance spectroscopy (EIS) is proposed to investigate the role of a compatibilizer on nanoparticle distribution in polymer blends with a co‐continuous morphology. Polypropylene/poly(ethylene‐co‐vinyl acetate) PP/EVA blends containing 3 vol% carbon nanotubes (CNT) with varying contents of polypropylene‐grafted‐ maleic anhydride (PP‐g‐MA) as compatibilizer were directly melt mixed. Microscopy, rheology, and thermodynamic analyses confirmed the distribution of CNTs in PP, EVA, and their interface. The EIS behavior of the blend nanocomposites was remarkably changed due to the formation of interphase by PP‐g‐MA/CNT. It was found that as the efficiency of compatibilizer increases the frequency dependency of the impedance diminishes showing a significant shift in the frequency cutoff from 104 Hz to 5 × 105 Hz. The EIS results also showed that compatibilizer can affect the loss factor. Incorporating 5 vol% or 10 vol% of the compatibilizer slightly reduced the loss factor, but a considerable reduction was observed at 20 vol% at which a conductive continuous interphase of compatibilizer formed at the interface. Moreover, the presence of compatibilizer led to a remarkable increase in dielectric constant by four orders of magnitude. EIS can effectively and comfortably trace the performance of a compatibilizer in a conductive polymer blend nanocomposite.Highlights EIS measurements describe microstructure of conductive polymer blend. EIS detects morphology development of a compatibilizer at varying contents. Migration of compatibilizer intensifies the Nyquist diameter decrement. Compatibilizer decreases dielectric relaxation time.

Effect of annealing temperature on the microstructure, dielectric, and microwave absorption performance of precursor blends derived ZrSiOCN ceramics

The ZrOC ceramic derived from polyzirconoxane (PZC) precursor, usually composed of ZrO2 and ZrC, is a high temperature ceramic material possessing great potentialities to be applied in harsh environments. However, the relatively high electrical conductivity of ZrC usually results in the limited electromagnetic wave absorption performance, and it's an effective way to adjust the relative complex permittivity of ZrOC ceramics by introducing SiCN ceramics with low dielectric properties. In this work, polyzirconoxane (PZC) and polysilazane (PSN) precursors were blended at the weight ratio of 1:1 firstly, then the blends were cured and pyrolyzed to prepare the ceramics composed of Zr compounds and Si-containing amorphous ceramics. As the annealing temperature rises, t-ZrO2, turbostratic carbon, and ZrC0.347N0.653 grains appear, and the real and imaginary parts of the permittivity gradually increase. It can be found that ZrC0.347N0.653 and free carbon form a typical core-shell structure when the annealing temperature is 1500 °C, and the as-obtained ceramic possesses remarkable microwave absorption ability. The minimum reflection loss is −22.7 dB at 12.02 GHz, and the value of effective absorption bandwidth is 1.65 GHz with a sample thickness of 2.0 mm.

Optimizing mechanical stretchability and photovoltaic performance in all-polymer solar cells from a two-donor polymer blend

In recent years, the power conversion efficiency of all-polymer organic photovoltaic cells (OPVs) has surpassed 19%, reaching a level suitable for commercial applications. To meet the dual requirements of high efficiency and high stretchability for wearable applications, ternary blending strategies have been widely used to improve the tensile properties of all-polymer OPVs. However, up to now, synergistic optimization of both photovoltaic and mechanical properties has seldom been realized. Herein, we introduce a long-branched side chain-containing PM6-like donor polymer, PM6-OD, into a PM6:PY-IT blend to construct stretchable active layers for all-polymer OPVs. When the weight content of PM6-OD in the donor polymers is 20%, both the photovoltaic and mechanical properties of the ternary solar cell are maximized. The variation of the mechanical and photovoltaic properties with the PM6-OD content in the donor was analyzed through grazing-incidence X-ray scattering and thin-film mechanical measurements to gain a deeper understanding of the intrinsic relationship between blend microstructure and mechanical properties. In addition, we prove that the data points of elastic moduli match well with the Kerner-Davis model. This work provides new guidance for the construction of high-efficiency, stretchable OPVs and has a promoting effect on the application of OPVs in wearable/stretchable electronics.

Microstructural insight into inhalation powder blends through correlative multi-scale X-ray computed tomography

Dry powder inhalers (DPI) are important for topical drug delivery to the lungs, but characterising the pre-aerosolised powder microstructure is a key initial step in understanding the post-aerosolised blend performance. In this work, we characterise the pre-aerosolised 3D microstructure of an inhalation blend using correlative multi-scale X-ray Computed Tomography (XCT), identifying lactose and drug-rich phases at multiple length scales on the same sample. The drug-rich phase distribution across the sample is shown to be homogeneous on a bulk scale but heterogeneous on a particulate scale, with individual clusters containing different amounts of drug-rich phase, and different parts of a carrier particle coated with different amounts of drug-rich phase. Simple scalings of the drug-rich phase thickness with carrier particle size are used to derive the drug-proportion to carrier particle size relationship. This work opens new doors to micro-structural assessment of inhalation powders that could be invaluable for bioequivalence assessment of dry powder inhalers.

Toward understanding the crystallization behavior of polypropylene‐based nanocomposites: Effect of ethylene–octene copolymer and nanoclay localization

AbstractThe crystallization properties of polypropylene (PP), a widely used polymer in industry, can be modified to overcome its mechanical limitations. In the current work, we investigated the effect of ethylene octene copolymer (EOC), blend morphology, nanoclay loading, nano‐localization, and component ratios on PP/EOC crystallization behavior in various aspects, including crystallization rate, degree of crystallinity, nucleation state, and crystalline phases. The results revealed that adding EOC with varying ratios can decrease PP crystallinity both in degree and rate due to the partial miscibility of components through grafting. Furthermore, it was found that the effect of the nanoclay on the crystallization behavior of PP is dependent on the nanoclay loading and its localization in the blend. The nanoclay, therefore, served as a nucleation agent at low nanoparticle contents, accelerating the crystallization rate regardless of the blend's microstructure. However, the crystallization rate of the blend samples at high nanoclay contents (above the rheological percolation threshold) was strongly influenced by the type of morphology. Accordingly, high nanoclay concentrations in blends with matrix‐dispersed morphologies reduced crystallization rates (increasing half‐time from 164 to 216 and 186 s), primarily because PP chains slowed down due to their interactions with nanoparticles and nanoclay hindrance. In contrast, in a blend with a co‐continues‐type morphology, the crystallization rates increased (decreasing half‐time from 624 to 270 and 236 s) due to nano‐localization at the interface and morphology transformation to the matrix‐dispersed one. The blends and nanocomposites based on PP/EOC were also investigated to determine the relationship between the crystallization behavior and mechanical properties.

Preparation of Porous Epoxy Resin Materials by Reaction-Induced Phase Separation Regulated Using Fumed Silica

Significant attention has been paid to improving the microstructure of polymer blends by stabilizing their phase interface with inorganic nanoparticles. During the preparation of porous epoxy resin materials by reaction-induced phase separation, the microstructure of the porous epoxy resin materials is controlled by fumed silica. The phase separation and chemical kinetics have been monitored by optical microscopy, differential scanning calorimetry, and rheometry, and the microstructure has been characterized by scanning electron microscopy and mercury porosimetry. Upon comparison of the phase separation process of the epoxy blend before and after the addition of fumed silica, it is evident that the fumed silica are preferentially dispersed in the pore-forming agent phase; at the phase interface, the coarsening rate of the phase structure is decreased, the reaction rate is decreased, and the gelation is delayed. With an increase in the mass fraction of the fumed silica, the pore size of the porous epoxy resin materials decreases gradually, and the structure is fined. This result provides an approach for the fine control of the microstructure of porous epoxy resin materials. In addition, the fumed silica in the porous epoxy resin material can be removed by acid etching without affecting the structure of the porous material. Furthermore, the effect of the fumed silica on the structure of the closed-hole epoxy resin system has been investigated.

The influence of mechanical activation on the structure and phase formation of an electro-thermal explosion in the Ti–Zr–C system

The TixZr1-xC solid solutions were synthesized by electro-thermal explosion under pressure in the (Ti + Zr + C) blends mechanically activated in hexane (MA-ETE). The effect of mechanical activation (MA) duration on reaction blend characteristics, ETE parameters, phase composition, and microstructure formation in solid solutions was investigated. At MA, the Ti + Zr blend deforms metal crystal lattices for 20 min, complete amorphization occurs for 40 min, and the carbide grains form a cubic structure for 90 min. The single-phase Zr0.50Ti0.50C solid solution with a grain size of 3–5 μm and a submicron composite with a grain size of 0.1–0.2 μm containing the Ti0.86Zr0.14C and Zr0.74Ti0.26C solid solutions were synthesized in a one-stage process for the first time without any additional thermotreatment. The influence of mechanical activation on diffusional mass transfer of reactants, structure, and phase formation is discussed.

Hydration and microstructure of ternary high-ferrite Portland cement blends incorporating a large amount of limestone powder and fly ash

This paper studied the mechanical properties, hydration process, and microstructure of ternary high-ferrite Portland cement (HFC) blends with replacement at levels up to 50 % with limestone powder (LP) and fly ash (FA). Two mechanisms, synergy and negative effects between LP and FA are observed in ternary HFC-LP-FA blends. The synergistic effects between LP and FA in ternary HFC blends mainly exhibit improving flexural strengths, improving compressive strengths before 28 days, decreasing drying shrinkage and cumulative heat, accelerating the crystal nucleation and growth process (NG), stabilizing the ettringite (AFt) phase, prolonging polymerization of alumino-silicate chains, and refining the pore size distribution, etc. However, the synergistic effect between LP and FA in ternary HFC blends cannot compensate for the dilution effect caused by a large amount of LP and FA replacement. The adverse effects between LP and FA in ternary HFC blends are emerged and mainly exhibited decreasing in compressive strengths after 28 days and increasing total porosity percentages. LP plays a predominant role at an early age (before 28 days) in HFC blends and increases the cumulative heat; Specifically the cumulative heat of LP25 (25 indicates percentage replacement of HFC) before 10 h is 2.2 J/g higher compared to HFC. In addition, a rapid increase of bound water is emerged from 3 days to 28 days, for instance the bound water content in LP25 increases by 55.9 % from 3 days to 28 days. It is attributed to the nucleation effect of LP providing more nucleation sites and accelerating NG process. LP in HFC blends leads to the formation of monocarbonate and AFt phase trends to stabilization. FA plays a predominant role at the later hydration age (from 28 days to 90 days) in HFC blends attributing its pozzolanic reaction. Furthermore, the synergistic effects between FA and LP in ternary HFC blends are mainly occurred at a later age.

18.2%-efficient ternary all-polymer organic solar cells with improved stability enabled by a chlorinated guest polymer acceptor

<h2>Summary</h2> Although the polymer/polymer blend systems still lag far behind small-molecule-acceptor-based counterparts in power conversion efficiencies (PCEs), the ternary blending strategy provides a simple and promising avenue to achieve an ideal nanoscale blend morphology for reducing the efficiency-stability gap of all-polymer solar cells (all-PSCs). Herein, we designed a narrow-band-gap chlorinated polymer acceptor PY-2Cl and incorporated into the PM6:PY-1S1Se host blend. The addition of PY-2Cl extends the absorption spectra, improves the molecular packing of host-guest acceptors, solidifies the blend microstructure, and suppresses the non-radiative recombination. Consequently, the PCE of the ternary blend is improved up to 18.2% (certified value 17.8%), which represents the highest PCE reported for all-PSCs so far. Impressively, the ternary blend exhibited smaller Urbach energy and better operation stability than did the corresponding binary systems. This work heralds a brighter future for accelerating the development of high-performance all-polymer systems by molecular design and ternary strategy.

Tuning the Morphology of HDPE/PP/PET Ternary Blends by Nanoparticles: A Simple Way to Improve the Performance of Mixed Recycled Plastics.

Due to a very low mixing entropy, most of the polymer pairs are immiscible. As a result, mixing polymers of different natures in a typical mechanical recycling process leads to materials with multiple interfaces and scarce interfacial adhesion and, consequently, with unacceptably low mechanical properties. Adding nanoparticles to multiphase polymeric matrices represents a viable route to mitigate this drawback of recycled plastics. Here, we use low amounts of organo-modified clay (Cloisite® 15A) to improve the performance of a ternary blend made of high-density polyethylene (HDPE), polypropylene (PP), and polyethylene terephtalate (PET). Rather than looking for the inherent reinforcing action of the nanofiller, this goal is pursued by using nanoparticles as a clever means to manipulate the micro-scale arrangement of the polymer phases. Starting from theoretical calculations, we obtained a radical change in the blend microstructure upon the addition of only 2-wt.% of nanoclay, with the obtaining of a finer morphology with an intimate interpenetration of the polymeric phases. Rather than on flexural and impact properties, this microstructure, deliberately promoted by nanoparticles, led to a substantial increase (>50 °C) of a softening temperature conventionally defined from dynamic-mechanical measurements.

Porosity-to-Cement Index Controlling the Strength and Microstructure of Sustainable Crushed Material-Cemented Soil Blends

Recently, studies that introduce alternative binders or wastes for created geo-materials that can be mixed with soil to give it greater strength, are of paramount importance. Roof tile residue, for example, has been widely used to create geopolymers in mortar and concrete. However, its application to soil stabilization has been limited. Additionally, there are no recent studies on the design of soil-tile mixtures with criteria, based on the estimation indexes of mechanical resistance, durability, and microstructure. Thus, this paper introduces another new geo-material not studied in the current literature: crushed roof tile (RT) waste mixed with soil-cement. For this, sedimentary soil was mixed with cement (C) and RT in various quantities and cured under 28 days. The influence and impact of the porosity/cement index (η/Civ) on the split tensile (qt) and compressive (qu) strengths were studied. Concerning porosity, as well as the cement content, it had a strong influence on strength. Regardless of the cement content used, a decrease in the material’s porosity promoted considerable gains in strength due to a more significant number of contacts between particles and a more outstanding interlocking between the soil particles. In addition, the greater ability to distribute stresses within the geomaterial compacted specimen and the greater capacity to mobilize friction in lower porosity states to contribute to the strength of the RT-soil-cement mixture. The index split tensile/compression was calculated as 0.18, independent of cement and the RT content. During the chemical microanalysis, the soil particles and the RT detected the cementing material between the soil particles. Finally, the new geomaterial can be applied to several uses in geotechnical engineering. From an environmental point of view, the RT-soil blends are considered technically sustainable. Reconciling sustainability and the development of new materials is, without a doubt, essential for us to progress in society. Cemented soil with RT residues have emerged recently and are a potential replacement for traditional materials, as demonstrated in this paper.

Consequences of thermo-oxidative ageing on the microstructure and mechanical properties of blends of polyethylenes with different butene contents

The microstructure of crosslinked blends of PE (containing 3.4 wt. % of butene comonomer) with PEcB (containing 9.4 wt.% of butene comonomer) can roughly be deduced from the microstructure of each PE (indicating a kind of phase separation process at the scale of crystallites), even though there is an important fraction of cocrystals made of chains of both PEs. Their thermo-oxidative ageing mainly leads to chain scissions. Annealing and chemi-crystallization occur in relation to the fraction of both homopolymers. The crystallised chains are protected from chain scission, and their presence at the ageing temperature has direct consequences on the way the elastomer network, initially created by the process, is modified. Thus, when the ageing temperature does not melt the large crystallites, these crystallites protect the long chain portions between chemical crosslinks. In addition, the larger the PE quantity is, the more the crystallites gather to form large scale structure, thereby promoting the percolation of the amorphous cut chains out of this structure. The mechanical behaviour of the materials at ambient temperature or at temperatures above their melting temperature, is the result of all these mechanisms. Thus, the crosslinked blend of 50wt%. of PE and 50wt.% of PEcB may be the best compromise in terms of mechanical properties and their preservation during thermo-oxidation.

Multi‐scale study of the structuration of candle blends with a high content of vegetable fats to replace paraffins: Effect of 12‐hydroxystearic acid content

AbstractThe aim is to replace mineral waxes with vegetable fats as an organogel for candle manufacturing while keeping the same texture. The physico‐chemical characteristics of renewable vegetable raw materials differ from those of mineral waxes and consequently the structure of the blends in which they are used is modified. Their properties are measured at different scales using FT‐IR analysis, polarized light microscopy, calorimetry and rheology. The addition of 12‐hydroxystearic acid (12‐HSA) promotes the creation of hydrogen bonds within the rapeseed oil that makes possible its incorporation to form an organogel. The addition of 12‐HSA also results in a modification of the crystal microstructure of blends made of 90% vegetable raw materials. Hence, the crystal lattice is denser and the crystal size is reduced compared to blends including mineral waxes. At a macroscopic scale, the physical properties of blends with 12‐HSA are modified compared to the reference one, mainly made of mineral waxes. A modification of crystallization and melting temperatures as measured by differential scanning calorimetry as well as the rheological behavior and the hardness assessed by penetrometer are observed. This results in a higher stability against exudation for blends with a high content of 12‐HSA. Mineral waxes can thus be substituted in the formulation of candles by renewable materials for the use of organogel, via the incorporation of an organogelator, 12‐HSA.