CELLULOSE
·
2025
·
IF 4.8
Liu Yufan,Feng Shanshui,Zhang Zhenlin,Meng Qinghua,Shi Xinghua
The development of high-performance cellulose nanopaper is essential to enable its emerging application as an alternative eco-friendly substrate in electronics, photonics, and energy storage devices. Herein, we propose a novel chemical strategy to substantially improve the strength and toughness of cellulose nanopaper by introducing cations and anions from imidazolium ionic liquids (ILs) into it, thereby forming additional hydrogen bonds between the hydroxy groups of cellulose nanofibrils (CNFs) and the IL ions. At an IL content of 0.5 wt%, the strength, toughness, and fracture toughness of the IL/cellulose nanopapers are 210.5 MPa, 5.1 MJ/m 3 , and 4.48 MPa·m 1/2 , respectively, which are 2.5, 2.1, and 1.25 times greater than those of the unmodified nanopapers. Interfacial structure characterization and mechanistic analyses demonstrate that a moderate IL content facilitates the formation of extensive hydrogen bonds between the hydroxy groups on the CNF surface and both the imidazolium cations and anions. This substantially strengthens the interfacial bonding of the CNFs, effectively enhancing the tensile strength and toughness of the cellulose nanopaper while preserving its failure strain.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2019
·Vol. 10
·期 1
·1-11
·
IF 11.878
Gao Naiwei,He Yonglin,Tao Xinglei,Xu Xiao-Qi,Wu Xun,Wang Yapei
Liquid sensors composed of ionic liquids are rising as alternatives to solid semiconductors for flexible and self-healing electronics. However, the fluidic nature may give rise to leakage problems in cases of accidental damages. Here, we proposed a liquid sensor based on a binary ionic liquid system, in which a flowing ionic liquid [OMIm]PF 6 is confined by another azobenzene-containing ionic liquid crystalline [OMIm]AzoO. Those crystal components provide sufficient pinning capillary force to immobilize fluidic components, leading to a freestanding liquid-like product without the possibility of leakage. In addition to owning ultra-high temperature sensitivity, crystal-confined ionic liquids also combine the performances of both liquid and solid so that it can be stretched, bent, self-healed, and remolded. With respect to the reconfigurable property, this particular class of ionic liquids is exploited as dynamic circuits which can be spatially reorganized or automatically repaired.
✓ 已验证
DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2015
·
IF 1.171
Yuanchao Pei,Jianzhou Zhang,Xinxin Song,Ming Zhao,Jianji Wang
In this paper, a series of ionic liquids (ILs) contains cholinium as cations were prepared. These ILs were used as extractants to separate some model drug molecules. The partition coefficients of these drug molecules between ILs and aqueous solutions were determined. Furthermore, the influence of different extraction parameters was investigated: volume ratio, equilibrium time, pH values, temperature, and ILs structure. It is shown that these ILs are highly effective materials for the extraction of drug molecules. The results imply that these ILs may have potential in drug extraction or separation as a new type of media.
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Wentao Zheng,Guangcai Xu,Yixuan Zhu,Lei Zhou,Xiankun Wu,Weizhong Shi
A series of phenolic ILs with different cations were synthesized and used for the capture of nitric oxide (NO) in this work. These phenolic ILs showed excellent absorption performance because of the chemical interaction between the phenolate anion and the acidic NO. In particular, their absorbability for NO was largely affected by the cationic bond-donating ability. Tetrabutylphosphonium phenolate ([P 4444 ][PhO]) was thus highlighted with the cation of weak bond-donating ability, reaching a maximum solubility of 1 mol NO/mol IL at 1 bar and 313.2 K. With the assumption of complex formation between NO and phenolic ILs, the reaction equilibrium thermodynamic model (RETM) was constructed to correlate the experimental solubilities. Therefore, thermodynamic parameters such as the Henry’s law constant H m , the reaction equilibrium constants K , the enthalpy Δ H SOL and the entropy Δ S SOL could be achieved to evaluate the absorption performance of NO in the phenolic ILs. Furthermore, through a combination of experimental solubilities, RETM fitting results and spectroscopic investigations, the absorption mechanism was proposed that there was a chemical interaction between NO and the O-site on the phenolate anion, with the reaction stoichiometry of 1:1 and 2:1. All these data showed that the phenolic ILs may be used as a kind of promising absorbents for NO capture.
✓ 已验证
DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2020
·
IF 1.568
Pengfei Jiang,Hongge Jia,Jingyu Xu,Hailiang Zhou,Mingyu Zhang,Shuangping Xu,Yu Zang,Xunhai Zhang,Yuyan Zhang
In this study, we firstly used 1-carboxyethyl-3-methylimidazolium ionic liquid as a capping agent to terminate a binary linear polyimide containing different groups such as ether bonds, carbonyl groups, and fluorine, and prepared six kinds of polyimides capped with ionic liquids (IL-PI). The mechanical properties of the polyimide membranes capped with ionic liquids were higher than those of the uncapped polyimide membranes. The elastic modulus of polyimide membrane from 1,3-bis (4-aminophenoxy) benzene (BPDA) and 3,3′4,4′-benzophenone tetracarboxydianhydride (BTDA) by using ionic liquid as the end capping agent (IL-BPDA-BTDA) was 2012 MPa, which is about 70 times higher than that without the end capping agent. In a TG test, all polyimides capped by ionic liquids showed good thermal properties. The residual amount of the polyimides was more than 40% at 1000 °C, which was higher than the other uncapped polyimides. In conclusion, polyimide membranes with high temperature resistance and high mechanical strength were prepared through an ionic liquid termination method.
✓ 已验证
DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2016
·Vol. 32
·期 3
·605-610
·
IF 0.844
CHEN Feng-Feng,DONG Yan,SANG Xiao-Yan,ZHOU Yan,TAO Duan-Jian
Four tetrabutylphosphonium carboxylate ionic liquids ([P4444][CA]) were prepared, and their densities, viscosities, refractive indices, and conductivities were measured and correlated with thermodynamic and empirical equations in the temperature range of 298.15-348.15 K.
The influence of temperature on these four properties of [P4444][CA] was discussed, and their thermal expansion coefficient values were calculated. The CO2 absorption capacity of [P4444][CA] was studied at 313.15 K and 100 kPa. The results indicated that [P4444][Buty]
had the highest CO2 capture capacity among these ionic liquids, with an absorption capacity of 0.4 mol·mol-1 and balance time of less than 5 min.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2016
·
IF 3.299
Yunchang Fan,Xiaojing Li,Lingling Yan,Jing Li,Shaofeng Hua,Lufei Song,Rupeng Wang,Shengnan Sha
In this work, the extraction behavior of the three antioxidants, gallic acid (GA), vanillic acid (VA) and syringic acid (SA) by a series of hydrophobic ionic liquids (ILs) was investigated. The experimental results indicated that the extraction ability of the ILs highly depended on their chemical structures and the hydrophobicity of the three acids. For the ILs with perchlorate (ClO 4 − ) as anion, the introduction of hydroxyl group on the cation improved significantly the extraction ability of ILs for GA. For the extraction of VA and SA, the hydrophobic interaction between ILs and VA or SA should also be considered. Thermodynamic analysis confirmed that hydrogen bonding was the main driving force underlying the transfer of the three acids from water to the IL phase. The three acids and ILs could be recovered and recycled, respectively by taking the advantage of pH dependence of the extraction efficiencies. These results suggested the ILs containing perchlorate anion exhibited potential applications in extraction of the three antioxidants from aqueous phase.
✓ 已验证
DOI
高影响因子
Green Chemical Engineering
·
2026
·
IF 11.9
Qilong Zhou,Tao Jin,Huaze Sun,Aatto Laaksonen,Jiahua Zhu,Xiaohua Lu,Liwen Mu
Although electrical energy storage and microfluidic systems employing electrically responsive ionic media such as ionic liquids (ILs) have seen substantial progress, the mechanisms by which ion migration and adsorption at electrochemically controlled interfaces dictate wettability and triboelectric behavior remain elusive. In this work, we investigated the interfacial adsorption and friction behaviors of two ILs containing imidazolyl chains and imidazolylamino cations on charged, organosilicon-modified Au surfaces. The mechanisms of ion migration and adsorption were further elucidated through molecular dynamics simulations. Notably, the two ILs exhibited opposite friction responses under negative electrical potentials, revealing an ion-specific electro-responsive behavior. This difference arises from the interplay of van der Waals attractions, electrostatic interactions, and short-range forces, which collectively govern wetting strength and dominate the dissipation of sliding energy. Furthermore, a semi-quantitative correlation between nanofriction and ILs wettability under applied potentials was established, highlighting the critical role of molecular structure design in enabling tunable electro-responsive friction. By identifying key molecular and interfacial parameters that control electro-responsive friction, this work provides strategies for optimizing surface functionalization, ionic liquid selection, and applied potentials in electro-lubrication systems, while establishing molecular-level design rules for electrically tunable interfaces with broad implications for micro/nanofluidics, electrowetting, soft robotics, and energy-storage applications.
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2026
·
IF 3.6
Jianhui Li,Ruoke Liu,Zichen Wang,Qi Wang,Wei Guan,Canjie Zhang,Xiaochun Chen
Developing efficient and recyclable catalysts is crucial for advancing the chemical recycling of polyethylene terephthalate (PET). In this study, a series of ionic liquids derived from methylpiperidine (MP) with adjustable structures were constructed, and their application in PET glycolysis was evaluated. By adjusting the substitution positions on the MP framework, introducing alkyl chains, and changing the coordinating metal center, the catalytic system was optimized to enhance reaction activity and durability. The optimized catalyst (1-C 6 -2MP/Zn(OAc) 3 ) enabled PET to degrade rapidly, achieving a BHET yield of 93.27% within 60 min at 185°C using 4 wt% catalyst. Moreover, this system demonstrated excellent reusability, maintaining a BHET yield above 90% after 10 consecutive cycles. Kinetic analysis indicated that the reaction followed a pseudo-first-order model, with an apparent activation energy of 79.59 kJ mol −1 , suggesting a relatively low energy barrier. The catalyst also showed good applicability in commercial PET glycolysis. Overall, this study revealed clear structure-performance relationships and provided guidance for the rational design of robust ionic liquid catalysts for sustainable PET recycling. Highlights MP-based ionic liquids were rationally designed for PET glycolysis. Optimized 1-C 6 -2MP/Zn(OAc) 3 achieved a 93.27% BHET yield. BHET yields remained > 90% after 10 recycling cycles. First-order kinetics with a low activation energy of 79.59 kJ·mol −1 . DFT reveals the catalyst effectively activated EG.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Changyong Cai,Yunlan Chen,Zhonghai Tang,Zhijian Tan
s Rosa roxburghii Tratt ( R. roxburghii ) polysaccharides have important application value in the fields of food and medicine due to their significant antioxidant and hypoglycemic activities. However, conventional extraction methods have low efficiency and poor environmental friendliness. In this study, a sustainable and highly efficient approach for R. roxburghii Tratt extraction was developed using thermo-responsive ionic liquids (TRILs). The choline chloride/lithium bis(trifluoromethylsulfonyl)imide system exhibited the optimal performance, enabling facile polysaccharide recovery via temperature regulation. It was found that the response temperature of TRIL was between 20 and 80 °C. The optimized extraction process achieved a maximum polysaccharide yield of 212.0 mg/g. Changing the temperature can change the hydrophilicity and hydrophobicity of TRIL, leading to the enrichment of polysaccharides in the aqueous phase and the recovery of polysaccharides. Additionally, this TRIL displayed excellent reusability, retaining an extraction capacity of 195.0 mg/g (retention rate 91.9 %) after five cycles. Subsequent purification yielded three polysaccharide fractions (RTFP-T1, RTFP-T2, and RTFP-T3). RTFP-T3 displayed superior antioxidant activity, scavenging 97.13 % of ABTS and 79.79 % of DPPH radicals. This study not only provides innovative solutions for the sustainable extraction of Rosa roxburghii Tratt polysaccharides, but also lays the technical foundation for the industrial application of natural active polysaccharides.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2015
·
IF 2.515
Yanxin Jin,Lushan Wang,Tao Wang,Peng Chen,Yanhui Bi,Li Yu
Halogen-free, low-cost alkylsulfonate-based surface active ionic liquid (SAIL), 1-butyl-3-methylimidazolium dodecylsulfonate ([C 4 mim][C 12 H 25 SO 3 ]) was easily synthesized through ion exchange reaction . Its self-aggregation behavior was systematically investigated by surface tension and electric conductivity measurements. [C 4 mim][C 12 H 25 SO 3 ] has rather lower cmc than the traditional ionic surfactant , sodium dodecylsulfonate (SDDS), while it has higher cmc than the anionic SAIL, 1-butyl-3-methylimidazolium dodecylsulfate ([C 4 mim][C 12 H 25 SO 4 ]), with the same hydrocarbon chain length. The negative ΔG m θ values, mainly result from more negative − T ΔS m θ , which demonstrates that the micellization process is spontaneous and entropy-driven in the temperature range investigated. Furthermore, influence of four organic electrolytes, viz. tetraalkylammonium bromides ((CH 3 ) 4 NBr, (C 2 H 5 ) 4 NBr, (C 3 H 7 ) 4 NBr, and (C 4 H 9 ) 4 NBr), on the aggregation behavior of [C 4 mim][C 12 H 25 SO 3 ] in aqueous solution was studied. The results show that all the electrolytes investigated promote aggregates formation of [C 4 mim][C 12 H 25 SO 3 ]. In addition, to comprehend the discrepancy in the surface activity of alkylsulfate- and alkylsulfonate-based SAILs, theoretical calculations were performed to evaluate the electrostatic potential of the corresponding anion. Compared to [C 4 mim][C 12 H 25 SO 4 ], the inferior surface activity of [C 4 mim][C 12 H 25 SO 3 ] mainly originates from the less electronegativity of its anion. This work illustrates the self-assembly of the environmentally friendly alkylsulfonate-based SAILs and is expected to be useful in the applications of ionic liquids.
研究领域:
胶体与界面化学
·
物理化学
·
离子液体
·
表面活性剂科学
·
自组装
✓ 已验证
DOI
高影响因子
TENSIDE SURFACTANTS DETERGENTS
·
2023
·Vol. 60
·期 4
·368-375
·
IF 1
Yarou Yang,Xu Li,Jinxiang Dong
Benzene and 1-dodecene are often alkylated to produce linear alkylbenzene (LAB). LAB is the raw material for the production of linear alkylbenzene sulfonate (LAS), a very important anionic surfactant used in both industrial cleaning and commercial laundry processes, as well as in household laundry detergents. In the present study, we investigated the use of [Et 3 NH]Cl–2AlCl 3 modified with CuCl 2 as a catalyst for the alkylation of benzene with 1-dodecene, specifically looking at the effect of reaction conditions on product activity. The results showed that a conversion of 1-dodecene of 100.0 % and a selectivity of LAB of 93.79 % could be obtained when the following ideal reaction conditions were present: molar ratio of benzene/1-dodecene = 6, reaction temperature = 25 °C, reaction time = 10 min, stirring speed of 1000 rpm and addition of 5.0 mol % CuCl 2 ). The catalyst concentration was 7.0 mol %. FTIR and 31 P-TMPO-NMR measurements were performed to characterise the ionic liquid before and after the addition of CuCl 2 . After the addition of CuCl 2 , it was found that the acidity of the ionic liquid had decreased. The regeneration of the catalyst was also investigated and the cause of inactivation of the catalyst was determined. The results showed that CuCl 2 modified the ionic liquids and decreased the benzene/1-dodecene ratio, but the high product selectivity was maintained.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）