Advances in Materials Science and Engineering
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2016
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IF 1.01
Jingzhi Wu,Min Qiao,Zhifeng Lyu,Qianping Ran
Using maltodextrin (MD) of different dextrose equivalent (DE) values, 1,3-propanesultone, and maleic anhydride as raw materials, a novel binary modified maltodextrin (BMMD) was synthesized and further applied as a water-reducing agent. Its structure was characterized by Fourier transform infrared (FT-IR) and UV. The rheological behavior of the sample solution and strengths for concrete were also determined and the adsorption was tested by TOC. The influence of the process parameters to degree of substitution (DS) and the dosage on the fluidity of cement paste were investigated. The results show that the optimal conditions of sulfonation were the MD of DE 15, (sulfonated agent)/ (MD) of 1.4, the catalyst amount of 1% by mass MD, and the reaction time of 12 h; the optimal conditions of esterification were (esterified agent)/ (SMD) of 0.6, the reaction temperature of 90°C, and the reaction time of 4 h. The optimal dosages of sulfonated maltodextrin (SMD) and BMMD were 0.475% and 0.45%, respectively. In this dosage, the main dispersion capacity of BMMD attributes to two kinds of anchoring groups () and the appropriate molecular weight of MD.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xu Fu,Ling-Ping Xiao,Bo-Wen Meng,Wen-Jie Li,Run-Cang Sun
Utilizing industrial lignin, which has the features of high yield and low added value, as a raw material for dye dispersants can produce significant environmental benefits and promote the sustainable development of resources. Ingeniously, we investigated the mechanochemical method to enhance effect in microwave-assisted sulfonation and the preparation of lignin-based dye dispersant using epichlorohydrin cross-linking. The results showed that lignin ball milling with Na 2 SO 3 could significantly increase the amount of C–O active structures and enhance its sulfonation reactivity. Under a lignin/Na 2 SO 3 ratio of 1:1, the charge density of the sulfonated lignin (milled lignosulfonate, MLS) achieved through microwave-assisted sulfomethylation up to 1.87 meq/g. Notably, the charge density of lignosulfonate (milled epichlorohydrin-cross-linked lignosulfonate, MELS) obtained by cross-linking with epichlorohydrin reached 1.91 meq/g with a degree of substitution of 1.45 mmol/g and molecular weight of 10530 g/mol. As compared with two commercial lignosulfonates and MLS, MELS displayed the greatest dispersion stability, increased the dyeing rate and K/S λmax value of dyed fiber while reducing staining. This work paved a new avenue for lignin valorization and provided new insights into the fabrication of lignin-derived dye dispersant.
研究领域:
林业工程
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材料科学
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DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 20
·4815
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IF 4.2
Xiaoping Yan,Jinguo Wang,Chao Chen,Kai Zheng,Pengfei Zhang,Chao Shen
A biomass-based catalyst, CuxOy@CS-400, was employed as an excellent recyclable heterogeneous catalyst to realize the sulfonylation reaction of aniline derivatives with sodium sulfinates. Various substrates were compatible, giving the desired products moderate to good yields at room temperature. In addition, this heterogeneous copper catalyst was also easy to recover and was recyclable up to five times without considerably deteriorating in catalytic efficiency. Importantly, these sulfonylation products were readily converted to the corresponding 4-sulfonyl anilines via a hydrolysis step. The method offers a unique strategy for synthesizing arylsulfones and has the potential to create new possibilities for developing heterogeneous copper-catalyzed C-H functionalizations.
研究领域:
有机化学
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催化化学
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产品关联
DOI
PubMed
高影响因子
Chemical Engineering and Processing-Process Intensification
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2023
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IF 4.3
Yiming Xu,Ping Li,Haoran Ma,Ailing Huang,Wei Zhao,Xi Zhao
Sodium alpha-olefin sulfonate (AOS) is highly esteemed for its exceptional properties and widespread utility in diverse industrial applications. This study introduces a pioneering investigation into the sulfonation of olefins, employing an innovative microchannel continuous sulfonation setup. The primary focus lies in process intensification through a multistage continuous flow synthesis approach, exploring the fundamental laws governing the influence of various process conditions on the generation process. Key process parameters, including sulfonation temperature, molar ratio of raw materials, sulfonating agent concentration, material flow rate, residence time, hydrolysis temperature, and hydrolysis time, are systematically examined to elevate the final product's quality. By leveraging 1-tetradecene as the primary feedstock and successfully implementing the microreaction minipilot platform, we achieve continuous synthesis of olefin sulfonate. Notably, post-hydrolysis, we attain an outstanding content of active substances exceeding 90%. This research showcasing the successful application of microchemical technology. By focusing on process enhancement and exploring influential factors, our research results highlight the transformative potential of microchemical technology for process intensification. The developed multistep cascade continuous flow synthesis of AOS demonstrates promising prospects for process intensification in the production of valuable sulfonated compounds.
研究领域:
化学工程
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工业化学
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DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 15
·3171
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IF 4.6
Hongmei Wang,Xiaoxu Zhang,Ziqi Shen,Zichuan Ma
The recovery and abatement of volatile organic compounds (VOCs) have received increasing attention due to their significant environmental and health impacts. Supported sulfonic acid materials have shown great potential in converting aromatic VOCs into their non-volatile derivatives through reactive adsorption. However, the anchoring state of sulfonic acid groups, which is closely related to the properties of the support, greatly affects their performance. In this study, two supported sulfonic acid materials, SZO and SMO, were prepared by treating ZrO2and MgO with chlorosulfonic acid, respectively, to investigate the influence of the support properties on the anchoring state of sulfonic acid groups and their reactive adsorption performance foro-xylene. The supports, adsorbents, and adsorption products were extensively characterized, and the reactivity of SZO and SMO towardso-xylene was systematically compared. The results showed that sulfonic acid groups are anchored on the ZrO2surface through covalent bonding, forming positively charged sulfonic acid sites ([O1.5Zr-O]δ−-SO3Hδ+) with a loading of 3.6 mmol/g. As a result, SZO exhibited excellent removal efficiency (≥91.3%) and high breakthrough adsorption capacity (ranging from 38.59 to 82.07 mg/g) foro-xylene in the temperature range of 130 –150 °C. In contrast, sulfonic acid groups are anchored on the MgO surface via ion-paired bonding, leading to the formation of negatively charged sulfonic acid sites ([O0.5Mg]+:OSO3H−), which prevents their participation in the electrophilic sulfonation reaction witho-xylene molecules. This work provides new insights into tuning and enhancing the performance of supported sulfonic acid materials for the resource-oriented treatment of aromatic VOCs.
研究领域:
环境科学
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材料化学
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化学工程
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表面化学
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产品关联
DOI
PubMed
高影响因子
TENSIDE SURFACTANTS DETERGENTS
·
2021
·Vol. 58
·期 6
·468-474
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IF 1.049
Zhonghua Zuo,Ming Zhou,Mao Liao,Pengao Peng,Jingfeng Zhang
Surfactants are very often used in tertiary oil production. However, the conventional surfactants cannot be used in high salinity reservoirs of tertiary oil production because the high salinity leads to the deactivation of the surfactants. Gemini sulpho-betaine surfactants have been developed to meet the requirements of tertiary oil production in such reservoirs. In this study, the Gemini sulphobetaine surfactant (bis{[(N-methyl-N-(3-alkoxy-2-hydroxy)propyl-N-(3-sulfonate)propyl]methylene}) was prepared by etherification, ring opening reaction and sulfonation reaction with decyl alcohol, epichlorohydrin, N,N’-dimethyl ethylene diamine and 1,3-propanesultone. The experimental conditions obtained are: the ratio of 1,3-propanesulfonic acid lactone to tertiary amine intermediate = 2.3 : 1, reaction temperature = 70°C and reaction time = 11 h. The analysis of the infrared spectrum showed that the structure of the synthesised substance corresponds to that of a Gemini sulphobetaine surfactant. The chemical shifts of the groups were determined by 1 HNMR structural characterisation of the products. The surface tension, emulsifying properties, foaming properties and wetting properties were investigated. The results showed that the surfactant has good foaming properties and good compatibility in a high salt environment.
研究领域:
化学工程
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石油工程
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材料科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Bingzheng Jiang,Jiaxin Li,Dong Chen,Li Wang,Wantai Yang
The development and application of high-efficiency coal-water slurry (CWS) dispersants can foster the clean utilization of natural coal. CWS with excellent flowability and stability requires good adsorption capacity of dispersant on pulverized coal surface, which is influenced substantially by the architecture and hydrophilicity of dispersants molecule. In this study, a series of neutralized sulfonated poly(styrene- alt -maleic anhydride) (NSPSM) with different molecular weight (M n ) and sulfonation degree (SD) were synthesized by self-stabilized precipitation polymerization (2SP), gas-solid heterogeneous sulfonation reaction (GSR) and neutralization reaction with NaOH. The performance of NSPSM for CWS, and their dispersion and stabilization mechanisms were investigated in detail. Under optimized conditions, maximum slurry concentration (MSC) and water separation ratio (WSR) of slurry with NSPSM could reach 66.5% and 2.0%, respectively, which are superior to commercial naphthalene sulfonate formaldehyde condensate (NSF) dispersant. The outstanding dispersibility of NSPSM was ascribed to its improved adsorption capacity due to increased charge density along polymer chain, which can prevent agglomeration among coal particles through electrostatic repulsion.
研究领域:
化学工程
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材料科学
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环境科学
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产品关联
DOI
高影响因子
ACS Biomaterials Science & Engineering
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2019
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IF 4.511
Han Wu,Lili Yang,Jun Qian,Deqing Wang,Yongkang Pan,Xuehong Wang,Saha Nabanita,Tingting Tang,Jun Zhao,Jie Wei
To improve the antibacterial and osteogenic activities of poly(etherketoneketone) (PEKK), concentrated sulfuric acid (H2SO4) suspension with silicon nitride (SN) microparticle was utilized to modify PEKK surface. Through sulfonation reaction, microporous coatings of PEKK/SN composites were created on PEKK surface, which were integrated with PEKK substrate. The results showed that the content of SN in the microporous coatings increased with the increase of SN content in H2SO4 suspension (PKS without SN, PKSC5 and PKSC10 with 5 and 10 wt % SN content in H2SO4) and that the surface roughness and hydrophilicity of microporous coatings on PEKK were significantly improved with the SN content increasing. In addition, the microporous coating of PKSC10 with high SN content exhibited excellent antibacterial activity due to the synergistic action of the presence of amino (−NH2) and sulfonic acid (−SO3H) groups as well as the improvement of protein absorption. Moreover, the microporous coating of PKSC10 obviously stimulated adhesion, proliferation, and osteogenic differentiation of rat bone mesenchymal stem cells. Furthermore, histological and push-out load evaluation indicated that the microporous coating of PKSC10 significantly promoted osteogenesis and osseointegration in vivo. The results suggested that the microporous coating of PKSC10 with high SN content display good biocompatibility, antibacterial and osteogenic activities, and osseointegration ability, which would have great potential for bone substitutes.
研究领域:
材料科学
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生物材料
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生物医学工程
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组织工程
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DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2023
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IF 7.4
Bingzheng Jiang,Dong Chen,Li Wang,Wantai Yang
In this research, a novel method was developed to synthesize methoxy polyethylene glycol-grafted sulfonated poly(maleic anhydride- alt -styrene) (SPMS-g-mPEG) as cement superplasticizers. The method includes three main steps: 1) self-stabilized precipitation polymerization (2SP) of styrene and maleic anhydride for PMS microspheres; 2) gas-solid heterogeneous sulfonation reaction (GSR) of gaseous SO 3 with PMS microspheres; 3) intramolecular sulfonic acid-catalyzed esterification reaction of mPEG with sulfonated PMS (SPMS). GSR can achieve uniform sulfonation of PMS microspheres, while overcoming the inherent drawbacks of the traditional homogeneous solution sulfonation process. SPMS and SPMS-g-mPEG with different structural parameters and uniform structure were successfully prepared and their effects on the fluidity and fluidity retention of cement pastes were systematically compared. For the samples demonstrating the best dispersing ability, the hydration heat and setting time of cement pastes, adsorption kinetics and compressive strength of mortar samples were determined further. Our work provides an innovative and effective approach to superplasticizers with outstanding properties and its uniform structure facilitates the investigation on the relationship between structure and properties.
研究领域:
材料科学
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化学工程
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土木工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）