CELLULOSE
·
2021
·Vol. 28
·期 11
·7243-7256
·
IF 5.044
Lu Xinyu,Que Han,Guo Haoquan,Ding Chenrong,Liu Xu,Qin Yu,Robin Hossain Mahmud,Xu Chaozhong,Gu Xiaoli
Abstract A homogeneous α -cellulose film was prepared by a regeneration method from ZnCl 2 /CaCl 2 /cellulose mixed system and was further combined with sodium lignosulfonate (SLS) via crosslinking through intermolecular hydrogen bonds and “bridge linkages”. The physicochemical and antibacterial performance of prepared films were investigated and results showed that the modified film exhibited stronger tensile strength, higher thermal stability, lower hydrophilic effect, better UV shielding as compared with the original one, and especially, better antibacterial ability derived from the presence of phenolic hydroxyl and sulfonate groups in SLS. This study proposed a simple and sustainable method for fabricating a multifunctional and environmentally friendly composite film using two main lignocellulose resources as raw materials. Graphical abstract
研究领域:
材料科学
·
化学工程
·
生物技术
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产品关联
DOI
高影响因子
GEOFLUIDS
·
2024
·Vol. 2024
·期 1
·9112308
·
IF 1.2
Hongmei Li,Yun Zhao,Jie Deng,Jing Xie,Weiqi Zhou,Yiting Liu,Luming Li,Futing Xia,Rui Qi
The optimization of coal dust management in fluidized mining environments is of paramount importance, yet it is currently impeded by a gap in understanding chemical dust suppression mechanisms. This study combines indoor experiments with molecular simulation to investigate the mechanisms by which three anionic surfactants with different hydrophilic and hydrophobic groups (SDBS, SDS, and SLS) influence coal wettability. Using hydrophobic bituminous coal as the experimental subject, basic physical and chemical properties are analyzed through proximate analysis, XRD, and FTIR. The effect of different surfactants on coal wettability is characterized based on sedimentation experiments, while the coal–surfactant–water three-phase model examines the equilibrium adsorption configuration, water molecule diffusion coefficient, and interaction energy in different adsorption systems. The surface free energy of coal dust and its components is measured before and after surfactant adsorption, verifying the adsorption-wetting mechanism of surfactants at the coal–water interface. Results show that anionic surfactants enhance wettability through a bidirectional adsorption mechanism at the coal–water interface: the hydrophobic tail adheres to the coal surface via van der Waals forces, while the hydrophilic head faces the water phase, driven by electrostatic and hydrogen bonding interactions. This coordinated adsorption process alters water diffusion and the surface free energy of coal, thereby improving wettability. SDBS, due to its benzene ring, significantly amplifies the bidirectional adsorption effect, achieving the most substantial improvement in coal dust wettability. The findings provide a robust theoretical framework for developing dust control strategies in fluidized mining operations, advancing the field toward more efficient and sustainable mining practices.
研究领域:
矿业工程
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化学工程
·
计算科学
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2020
·
IF 2.888
Junwei Cui,Shengshan Bi,Andreas P. Fröba,Jiangtao Wu
The present work focus on the measurement of viscosity and interfacial tension of n -heptane ( n -C 7 H 16 ) with dissolved carbon dioxide (CO 2 ) by the surface light scattering. The method allows an absolute determination of both properties in a contactless way. The experiments were conducted in macroscopic thermodynamic equilibrium at temperatures from (298 to 473) K and saturation pressures up to 5.5 MPa. For sample preparation of binary mixtures of n -C 7 H 16 with dissolved CO 2 after its addition, the equilibration process could be checked to be completed by showing that viscosity and interfacial tension are independent on time. For reaching equilibrium, at least two hours were elapsed between the addition of CO 2 and the start of the measurement. For both viscosity and interfacial tension, typical expanded uncertainties are 3% on a confidence level of 95%. The viscosity results were correlated with an empirical equation, where the absolute average deviation (AAD) and the maximum absolute deviation (MAD) between experiments and correlation were 1.9% and 7.2%, respectively. For the viscosity, a data comparison was hindered because of the lack of literature data. For the interfacial tension, which can also be represented by an empirical correlation and good agreement with literature can be found.
研究领域:
物理化学
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材料科学
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产品关联
DOI
高影响因子
RARE METALS
·
2023
·Vol. 43
·期 1
·356-365
·
IF 8.8
Liao Bo-Kai,Quan Rui-Xuan,Feng Ping-Xian,Wang Huan,Wang Wei,Niu Li
Abstract Lignin is a typical biological macromolecule with a three-dimensional network structure and abundant functional groups. It has excellent ionic complexation ability and amphiphilic molecular structure characteristics. In this study, the carbon steel anticorrosion performance of sodium lignosulfonate (SLS) in an acid solution was evaluated using the weight loss method, electrochemical measurements, scanning vibration electrode technique (SVET), and surface characterization methods. SLS exhibited excellent corrosion inhibition efficiency for Q235 carbon steel in 1 mol·L -1 HCl, reaching a maximum value of 98%. A low SLS concentration of 20 mg·L -1 resulted in the maximum corrosion inhibition efficiency, which remained nearly constant at higher SLS concentrations. The SVET test demonstrated that the formation of an SLS adsorption film can impede corrosion. This study confirms the significance of the application of green biomass resources in the field of metal corrosion protection and green functional materials. Graphical abstract
研究领域:
材料科学
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腐蚀与防护
·
绿色化学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Fenghui Xie,Wei Wu,Huanbo Hu,Junjian Ye,Lu Cui,Zhengyi Wang,Wenxue Zhang
In order to enhance the mechanical properties of lattice structure parts made of thermoplastic polyurethane elastomer (TPU) prepared by selective laser sintering (SLS) technology, this study employed the oxidative self-polymerization of dopamine (DA) to prepare polydopamine-modified silicon carbide whiskers (PDA-SiC) fillers with a core-shell structure. These fillers were uniformly dispersed in a waterborne polyurethane (WPU) to form a coating solution, which was then used to prepare TPU printed parts with a uniform PDA-SiC/WPU coating structure through post-treatment impregnating-curing processes. The coated TPU parts exhibited tensile strength, elongation at break, and room temperature compressive strength of 8.37 MPa, 610.2%, and 1.062 MPa, respectively, representing improvements of 40.9%, 33.2%, and 353.3% compared to pure TPU parts. This approach effectively enhanced the mechanical performance of SLS-formed TPU parts, strengthening their application in the field of flexible lattice structure parts.
研究领域:
材料科学
·
生物仿生学
✓ 已验证
产品关联
DOI
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.2
An Wen,Li Jiong,Du Guoyong,Deng Chunping,Ma Wenxin
Industrial development has led to the generation of large amounts of oily wastewater, which poses significant threats to both environment and human health. These wastewater streams often contain various pollutants, such as organic dyes and heavy metal ions, creating an urgent need for multifunctional materials capable of efficiently separating these contaminants. In this study, we deposited sodium lignosulfonate (SLS)-modified multi-walled carbon nanotubes (MWCNTs) onto polyvinylidene fluoride (PVDF) polymer membranes by vacuum filtration. Subsequently, a hydrophilic bio-inspired coating, consisting of pyrogallic acid (PG) and silane-coupling agent (KH550), was deposited on the membrane surface. The resulting composite membrane exhibited exceptional superhydrophilicity and underwater superoleophobicity. This membrane demonstrated high efficiency in separating various oil–water emulsions, with a separation efficiency reaching 99% and a stable separation flux maintained above 350 L m⁻ 2 h⁻ 1 . The SLS-modified MWCNTs provided the membrane with abundant adsorption active sites, enabling excellent removal of cationic dyes and heavy metal ions. The removal rates of methylene blue (MB) and rhodamine B (RhB) exceeded 92% and 95%, respectively, while the adsorption capacities for Cu(II) and Pb(II) were 38.7 mg g −1 and 46.8 mg g −1 , respectively. Furthermore, the composite membrane demonstrated outstanding chemical stability and durability under highly acidic, alkaline, and 5% NaCl salt solution conditions. Consequently, the SLS-MWCNTs@P/K-MF composite membrane holds great promise for the treatment of complex oily wastewater in extreme environments and has significant potential for remediation of wastewater contamination.
研究领域:
环境科学
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材料科学
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生物仿生学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
An-Nan Chen,Jing-Yan Chen,Jia-Min Wu,Li-Jin Cheng,Rong-Zhen Liu,Jie Liu,Ying Chen,Chen-Hui Li,Shi-Feng Wen,Yu-Sheng Shi
Novel double-shell mullite powders with good flowability and formability for selective laser sintering (SLS) were prepared for the fabrication of porous mullite ceramics with enhanced mechanical properties. The inner MnO 2 shell was prepared by the co-precipitation reaction between MnC 4 H 6 O 4 ·4H 2 O (Mn(Ac) 2 ·4H 2 O) and KMnO 4 , and the outer phenolic resin shell was obtained via the solvent evaporation method. The influence of Mn(Ac) 2 ·4H 2 O solution content on phase composition, microstructure, pore size distribution and mechanical properties of porous mullitie ceramics was investigated. With increasing Mn(Ac) 2 ·4H 2 O content from 0 to 48 mL, the compressive strength and fracture toughness of porous mullite ceramics increased from 0.8 ± 0.1 MPa to 22.1 ± 1.0 MPa and from 0.03 ± 0.01 MPa m 1/2 to 0.53 ± 0.01 MPa m 1/2 , respectively. It was found from TEM analysis that the remarkable mechanical property enhancement was attributed to the pinning effect of the presence of MnO 2 sintering additive precipitated between the interwoven mullite grains. Correspondingly, the shrinkage increased sharply from 5.27 ± 1.3% to 23.5 ± 1.4%, while the open porosity decreased dramatically from 64.1 ± 0.6% to 48.7 ± 1.2% with the gradual reduction of open pore size distribution from 17.25 to 11.33 μm. Finally, the honeycomb mullite ceramics with very complex shapes of intersecting pore tunnels were successfully prepared by SLS. This paper provide a novel and feasible route to dramatically improve the mechanical properties of SLS-formed porous ceramic products.
研究领域:
材料科学
·
陶瓷工程
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DOI
高影响因子
MINERALS ENGINEERING
·
2025
·
IF 5
Qingjun Guan,Fujia Zhou,Yulin Zhou,Zhigang Yin,Ruihua Fan,Xingxing Deng,Zhiyong Gao
With the rapid advancement of the new energy industry, the expansion of lithium smelting has resulted in significant discharge and accumulation of lithium refinery residue (LRR), consuming vast land resources and posing a serious threat to the local environment. Aluminosilicate, the primary component of LRR, shares a similar structure with pyrophyllite, making it a viable substitute. The separation of gypsum from LRR is essential for producing qualified aluminosilicate products. In this study, an eco-friendly surfactant, N-SLS, was utilized as a collector to efficiently separate gypsum from LRR via flotation. N-SLS selectively adsorbed to the gypsum surface, likely due to the complexation of carboxylate groups with calcium ions, enhancing its hydrophobicity and facilitating flotation. Meanwhile, aluminosilicate retained its hydrophilicity and remained in the slurry, separating gypsum and aluminosilicate. Using 300 g/t N-SLS as the collector and 3000 g/t sodium silicate as the depressant at natural pulp pH, qualified aluminosilicate products (SO 3 grade <0.6 %, a concentrate yield >70 %) were produced through an open-circuit flotation process, consisting of one roughing and three scavenging steps. The industrial recovery of aluminosilicate products from LRR based on this flotation process offered an economic benefit of 25.27 USD/t. This study provided a cost-effective and environmentally friendly solution for the large-scale, continuous, and stable disposal of lithium slag.
研究领域:
矿物加工
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环境工程
·
化学工程
·
材料科学
·
表面化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Hui Mei,Hao Li,Zhipeng Jin,Liangjun Li,Dou Yang,Chengyu Liang,Laifei Cheng,Litong Zhang
A lightweight thermal protection/insulation integrated sandwich structure for the aerospace thermal protection system (TPS) was developed with the aim of achieving superior mechanical strength and thermal insulation properties. On the one hand, the lattice frameworks of silicon carbide (SiC) ceramic thermally insulated components with body-centered lattice core (BCLC) were fabricated by selective laser sintering (SLS) 3D printing technology; on the other hand, the sol–gel process was applied to fill quartz fibers reinforced silica (Q f /SiO 2 ) aerogel into the hollow parts of the BCLCs to form a sandwich structure, thus further enhancing the mechanical and thermal insulation properties. To explore the impact of lattice core structure gradient on performance, we designed two types of BCLCs, single-layer one and double-layer one. By comparing the properties of the sandwich structures with the BCLCs, it was found that after the hot surface temperature was kept at 1000℃ for 1500 s, the backside temperature of the single-layer and double-layer sandwich structures decreased by 69.15℃ and 112.73℃, respectively, implying that the thermal insulation efficiency increased by 8.75 % and 13.85 %, respectively. Remarkably, it was precisely due to the filling of the Q f /SiO 2 aerogels that the compressive strength of the single-layer and double-layer sandwich structures reached 119.41 MPa and 35.16 MPa, respectively, which were successfully improved by 238.56 % and 256.23 %, respectively, in comparison with the BCLCs structures. Consequently, this study provides an efficient and reliable method for the preparation of thermal protection/insulation integrated components by using 3D printing technology combined with the sol–gel method, which has broader significance among academic and industrial communities.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
DOI
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 2
·1697-1713
·
IF 4.6
Abdelazeem S. Eltaweil,Nouf Al Harby,Mervette El Batouti,Eman M. Abd El-Monaem
In this investigation, a good adsorbent was created by combining kaolin, β-cyclodextrin, and sodium lauryl sulfate-functionalized biochar, resulting in a new Kaol/SLS-BC/β-CD composite. Assorted analyses were used to characterize the chemical/physical properties of the Kaol/SLS-BC/β-CD. The adsorption capability of the Kaol/SLS-BC/β-CD was evaluated, using an experimental adsorption batch study of o-nitrophenol (o-NP). The experimental batch experiments showed that o-NP removal of 100% was achieved at room temperature after 180 minutes with pH = 3, Kaol/SLS-BC/β-CD dose = 10 mg, and o-NP concentration = 50 mg L−1. Kinetic and isotherm analyses of the experimental data implied that the Freundlich isotherm model and the pseudo-second-order kinetic model were obeyed for the o-NP adsorption reaction. Surprisingly, the maximal adsorption capacity of Kaol/SLS-BC/β-CD towards o-NP, calculated from Langmuir analysis, was 588.24 mg g−1. The optimization of o-NP adsorption onto Kaol/SLS-BC/β-CD was investigated using response surface methodology (RSM) based on a Box–Behnken design (BBD) with three independent variables: initial o-NP concentration, adsorbent dosage, and contact time. The quadratic response surface model was validated through analysis of variance (ANOVA). The reduced quadratic model demonstrated good agreement between the predicted and experimental results. Thus, the validated model can be reliably applied to predict the optimal conditions for o-NP adsorption onto Kaol/SLS-BC/β-CD. The mechanistic study of the o-NP adsorption onto Kaol/SLS-BC/β-CD clarified that the process may occur via Lewis acid–base, pore-filling, coordination bond, hydrogen bond, and pi–pi interactions. Notably, the cycling test indicated that the Kaol/SLS-BC/β-CD could be reused for six adsorption cycles of o-NP with promising efficacy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Zhigang Zhan,Wei Wu,Huanbo Hu,Junjian Ye,Lu Cui,Qiuyang Yu,Changxi Chen
This study presents the synthesis of a waterborne polyurethane (WPU-A) emulsion modified with (3-(2-aminoethyl)aminopropyl)trimethoxysilane (AEAPTMS). Self-cleaning materials were developed by applying WPU-A emulsions onto thermoplastic polyurethane (TPU) components, which were shaped using selective laser sintering (SLS), through a post-treatment impregnation and curing method. Additionally, superhydrophobic nano-SiO 2 (sn-SiO 2 ) was incorporated onto the surface of the TPU/WPU-A material. The resulting TPU/WPU-A/sn-SiO 2 self-cleaning composites were created, and the self-cleaning capabilities along with other characteristics of the two TPU-coated materials were examined individually. Findings indicated that the water contact angle for pure TPU measured 123.8°, while the TPU/WPU-A0.5/sn-SiO 2 -20, treated with WPU-A emulsion, exhibited an increased angle of 153.3°, achieving superhydrophobicity. The incorporation of sn-SiO 2 particles enhanced the surface roughness of the TPU/WPU-A0.5/sn-SiO 2 -20 material, facilitating the easy removal of surface contaminants. This enhancement contributes to improved anti-pollution properties and effective self-cleaning performance of the TPU material. The compressive strength of the TPU/WPU-A0.5/sn-SiO 2 -20 skeletonized parts reached 0.733 MPa, representing a 168% increase compared to the pure TPU skeleton. The TPU/WPU-A0.5/sn-SiO 2 -20 material, which is coated with WPU-A and integrated with sn-SiO 2 , demonstrates excellent self-cleaning and mechanical properties, indicating its potential for various applications.
研究领域:
材料科学
·
高分子科学
·
表面工程
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2017
·
IF 4.9
Rui Zhang,Yang Liu,Xinran Huang,Mengchen Xu,Rutao Liu,Wansong Zong
The extensive use of surfactants in food, laundry products and agriculture has caused concern about their biosafety. However, few studies have been done on their potential effect on the lipase which has always been used with surfactants in food and laundry industry. Herein, we investigated the interaction of three surfactants (sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate (SDBS), sodium lauryl sulfonate (SLS)) with Candida rugosa lipase (CRL), which is a popular biocatalyst used regularly with surfactants. The effect of the three surfactants on the conformation and activity of CRL was evaluated by using multiple spectral methods, enzyme activity assay and molecular docking modeling. The results demonstrated that CRL interacted with SDS, SDBS and SLS primarily through hydrophobic forces, H-bonding and electrostatic forces, respectively. The binding constants (K A ) of SDBS with CRL varied with temperature: 1.99 × 10 3 mol/L at 298 K and 4.13 × 10 3 mol/L at 318 K. SDS and SDBS affected the secondary structure and skeleton of CRL, which changed the polarity of CRL and enhanced its activity. SLS also changed the secondary structure and activity of CRL moderately, but had little effect on its polarity and chromophore microenvironment. Accordingly, all three surfactants exhibited effect to CRL on the molecular level calling for more attention to pay on their biosafety. The work demonstrates that SDS, SDBS and SLS could cause negative effects to CRL from different angles and therefore are not bio-friendly detergents.
研究领域:
生物化学
·
分子生物学
·
酶学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）