JOURNAL OF APPLIED POLYMER SCIENCE
·
2013
·Vol. 131
·期 8
·
IF 1.395
Caina Min,Qun Pu,Liu Yang,Hong Fan
A novel polysiloxane bearing dodecyl and epoxy side groups (DESO) was synthesized as an intermediate through hydrosilylation of polymethylhydrosiloxane with allyl glycidyl ether and 1-dodecene. Then, dodecyl/piperazine functional polysiloxane (DPSO) was prepared through the reaction of N -aminoethylpiperazine with DESO. The chemical structure of DPSO was characterized with FTIR and 1 H-NMR spectroscopy and its application performance on cotton fabrics was studied. DPSO with dodecyl side groups gifted the treated fabrics with good wettability and whiteness compared with piperazine functional polysiloxane, while with a slightly reduced softness as well as thickening handle. Film morphology, orientation, and performance on cotton substrates of DPSO were investigated by scanning electron microscope, atomic force microscopy, X-ray photoelectron microscope, and so on. Affected by the dodecyl side groups, DPSO formed relatively hydrophilic, macroscopically smooth but actually uneven films with many dodecyl side chain pillars on the treated substrate surfaces. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40186.
研究领域:
高分子化学
·
纺织化学与染整工程
·
材料表面科学
·
功能材料
✓ 已验证
DOI
高影响因子
Asian Journal of Pharmaceutical Sciences
·
2016
·Vol. 12
·期 2
·202-208
·
IF 0
Huiyan Shi,Chenzhi Hou,Liqiang Gu,Zhe Wei,Hang Xing,Meiyu Zhang,Shixiao Wang,Longshan Zhao,Kaishun Bi,Xiaohui Chen
The present study was designed to investigate the influence of the pretreatment of piperazine ferulate on pharmacokinetic parameters of methotrexate in methotrexate-induced renal injury rats. A simple and efficient high performance liquid chromatography coupled with mass spectrometry (HPLC-MS) method was developed to determine methotrexate in rat plasma. Methotrexate and syringic acid (internal standard) were extracted from rat plasma samples by protein precipitation with acetonitrile. The analysis was performed on a CAPCELL PAK C 18 column (150 mm × 4.6 mm, 5 µm) with acetonitrile and 5 mmol/l ammonium acetate aqueous (10:90, v/v ). The linear range was 5.0 × 10 −2 to 100.0 µg/ml for methotrexate. Other parameters were all within the acceptance criteria. The validated method was successfully applied the pharmacokinetic study of methotrexate between two methotrexate treated groups (with and without the pretreatment of piperazine ferulate). Compared with the methotrexate treated alone group, the pharmacokinetic parameters in the methotrexate with the pretreatment of piperazine ferulate group showed significantly lower MRT (0-t) , MRT (0-∞) and T 1/2 . Results suggested that methotrexate can be rapidly eliminated, cleared or metabolized in rat blood, which might be related to the pretreatment of piperazine ferulate. The method provided deeper insights into rational clinical use of methotrexate with the pretreatment of piperazine ferulate on cancer patients with renal dysfunction.
研究领域:
药理学
·
药物代谢
·
肾脏病学
·
肿瘤学
·
临床药学
·
分析化学
✓ 已验证
DOI
DESALINATION
·
2026
·
IF 9.9
Luheng Jing,Siping Ding,Tinglue Zhang,Yang Tong,Tonghui Zhang,Zheyi Meng,Xuefen Wang
Traditional hydrophobic membranes are susceptible to membrane fouling and wetting of membrane pores, limiting the application of membrane distillation (MD) technology in water recovery under increasingly complex water conditions. To address these challenges, we designed a structural integrated hydrophilic-omniphobic Janus membrane via synchronous fluorination/reverse interfacial polymerization (SF/R-IP) based on roughening modified polyvinylidene fluoride (PVDF) nanofibrous membrane. During the SF/R-IP process, not only piperazine (PIP) from the upper aqueous phase solution reacted with trimethylchloroform (TMC) from the lower organic phase solution to form polyamide layer (PA) through IP reaction, the modified PVDF substrate would also be fluorinated synchronously by 1H,1H,2H,2H-perfluorotriethoxysilane (PFDTES) in organic phase. As a consequence, a novel Janus membrane with an ultrathin hydrophilic PA surface layer partially inter-embedded onto an omniphobic substrate was featured, and this special inter-embedding adhesion endowed the Janus membrane excellent structural integrity. The optimized Janus membrane combined the anti-wetting performance of an omniphobic membrane with the oil contamination resistance of the hydrophilic layer and the high permeability of nanofibrous substrate, demonstrating considerable vapor flux (31.1 kg m −2 h −1 ) and complete salt rejection (99.99%) during a long-term (80 h) DCMD experiments using surfactant sodium dodecyl sulfate (SDS)-stabilized oil-in-water (O/W) saline emulsion as the feed solution, and could fully recover optimal flux and continue stable operation after flushing. This study would provide a new strategy in designing high-performance MD membranes and enable robust applications of MD facing the challenges of membrane fouling and wetting.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Wan-Long Li,Xiao-Wei Luo,Wan-Ting Lin,Si-Yuan Zhang,Zi-Lu Zhang,Zi-Jun Zhang,Zhi-Kang Xu,Ling-Shu Wan
Nanofiltration (NF) membranes show superior ion selectivity, which, however, decreases with temperature owing to excessive pore expansion of the selective layers. Herein, an effective and feasible co -solvent strategy is proposed to improve the thermostability of polyamide NF membranes. The co -solvent systems with low interfacial tension accelerate the interfacial diffusion of aqueous monomers during the interfacial polymerization. Moreover, the enhanced compatibility between the organic phase and the nascent polyamide layer, which is assessed by the Hansen solubility parameters, facilitates the formation of selective layers with high cross-linking degree. The resultant compact selective layers possess enhanced thermostability. The optimized NF membrane exhibits a high permeance of 24.8 L·m −2 ·h −1 ·bar −1 with 98.3% MgSO 4 rejection at 85 °C. The present method shows great potential for preparing thermostable NF membranes.
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2026
·
IF 9.9
Narendra Basel,Jianquan Luo,Guozhu Wang,Yinhua Wan
Oilfield-produced water (OFPW), a major byproduct of hydrocarbon extraction, is highly saline and contains elevated concentrations of divalent ions, such as calcium (Ca 2+ ), posing significant challenges for its treatment, transportation, and reuse. Nanofiltration (NF) membranes offer an energy-efficient solution for OFPW treatment by selectively rejecting multivalent ions while allowing monovalent ion transport; however, conventional NF membranes often suffer from limited Ca 2+ rejection and severe fouling. In this study, a polyamide NF membrane with an engineered spatial charge distribution was fabricated via mixed-monomer interfacial polymerization using piperazine and polyethyleneimine, assisted by a dodecyl phosphate (DDP) surfactant. The resulting membrane features a negatively charged front surface and a positively charged rear surface, forming a dual-charged configuration. This structure integrates Donnan repulsion from the positive sublayer and size-sieving effects, leading to enhanced ion selectivity and antifouling performance. Compared with commercial NF270 and DL membranes, the fabricated membrane achieved significantly higher Ca 2+ rejection (98.95%) and Na + /Ca 2+ selectivity (21.44), while maintaining competitive water permeability and reduced fouling during treatment of both simulated and real OFPW. These results demonstrate that tailoring spatial charge distribution in NF membranes is an effective strategy for improving ion selectivity and fouling resistance in high-salinity water treatment applications.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9
Quan Li,Jiayi Lu,Le Li,Atian Xie,Yulun Tao,Xiujie Ji,Yanhong Ji,Benqiao He
Polyamide (PA) nanofiltration (NF) membranes are widely used in precious separation field, but balancing permeability and selectivity remains a significant challenge due to the conventional uncontrolled interfacial polymerization (IP) process. This study reports a synthetic nano-hydroxyapatite (HA) multi-functional interlayer constructing strategy via vacuum-assisted, to modulate and quantify the IP reaction process for enhance the perm-selectivity of PA NF membranes. Combined macroscopic characterization and molecular dynamics simulations reveal a dual function of the HA interlayer: (i) HA modulates the diffusion dynamics of the aqueous-phase monomer piperazine via synergistic H-bonding and water-mediated long-range electrostatic interactions, and (ii) enhances interfacial compatibility by forming strong covalent bond between its surface reactive groups and the PA separation layer. Benefiting from these modulated mechanisms, a structurally optimized separation layer was successfully fabricated. Compared with the pristine PA membrane, the optimal PA-HA3 membrane exhibited an approximately 3-fold increase in pure water permeance (32.40 L·m −2 ·h −1 ·bar −1 ) while maintaining a Na 2 SO 4 rejection of 99.1%, along with well long-term stability. This work not only proposes a novel strategy of HA multifunctional interlayer for high-performance NF membrane fabrication but also provides new mechanistic insights and a theoretical framework for the quantifiable design of IP process and structural optimization of separation membranes.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Xiaobin Zhou,Ting Zou,Yunqiong Tang,Shengpeng Mo,Yinming Fan,Bihong Lv,Yanan Zhang,Dunqiu Wang,Yinian Zhu,Zongqiang Zhu,Guohua Jing
Despite the advantages of low regeneration energy and corrosiveness, the CO 2 absorption loading capacity and regenerability of non-aqueous absorbents (NAAs) must be advanced to enable their viable practical application. This study introduced an innovative dual-activator strategy employing a tertiary amine and an alcohol to enhance both absorption and regeneration performance in primary amine–based NAAs. Experimental results showed that incorporating an appropriate amount of the tertiary amine N,N -dimethylethanolamine (DMEA) increased the CO 2 loading of the diamine 3-methylaminopropylamine (MAPA) to 1.54 mol·mol −1 MAPA, a 43.9% increase over the system without DMEA, while the addition of n-propanol (NPA) enabled highly efficient regeneration with 99.74% efficiency, a 27.2% improvement compared to the system without NPA. The absorbent also exhibited excellent cycling stability, maintaining 94.16% regeneration efficiency after five cycles. Mechanism investigations revealed that DMEA preferentially facilitated in the deprotonation of the MAPA-zwitterion during absorption, increasing the availability of free MAPA for CO 2 uptake and ultimately enhancing CO 2 absorption. During desorption, NPA served as a proton shuttle that redirected the proton transfer from a direct route to an indirect one via itself (protonated amine → NPA → MAPA-carbamate), significantly reducing the energy barrier. Meanwhile, NPA also participated in intermolecular proton exchange with the resulting carbamic acid, effectively promoting its thermal decomposition. Thermodynamics and corrosion analyzes confirmed that the optimized MAPA-DMEA-NPA system required only 0.43 GJ·ton −1 CO 2 in sensible and latent heat, 79.1% lower than the 30 wt% MEA solution, and exhibited negligible corrosiveness (2.5 × 10 −4 mm·year −1 on carbon steel). This work presented an effective dual-activator approach for designing high-performance NAAs with superior CO 2 capacity and regeneration stability, providing a promising pathway for advancing energy-efficient CO 2 capture technologies.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Yuedong Li,Hongdan Wu,Zhihui Zhou,Xianyuan Fan,Wenming Fu,Guoyuan Lei,Qiuyang Huang,Junlin Peng
To address the structural defects and performance limitations caused by nanoparticle aggregation and insufficient interfacial compatibility in conventional thin-film nanocomposite polyamide (PA) nanofiltration membranes, an interfacial engineering strategy was developed to construct organic solvent nanofiltration membranes via the in situ growth of amino-functionalized ZIF-8 (ZIF-8-NH 2 ) nanoparticles. A continuous and well-anchored ZIF-8-NH 2 interlayer was introduced between the polyimide support and the PA selective layer, which effectively mitigated nanoparticle aggregation and enhanced interfacial integrity, thereby promoting the formation of a dense and uniform PA layer. Performance evaluation demonstrated that, at an optimized ZIF-8-NH 2 growth cycle of three, the resulting membrane exhibited a pure-water permeance of 41.3 L·m −2 ·h −1 ·bar −1 and a methanol permeance of 16.9 L·m −2 ·h −1 ·bar −1 , while achieving rejection values of 65.1 % for NaCl and 99.9 % for Na 2 SO 4 . In ethanol, the membrane exhibited a low molecular weight cutoff of 456 g·mol −1 and maintained Congo red rejection above 99 % during continuous operation for 5 days, confirming its structural stability and operational durability.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.5
Jian He,Menghan Lu,Xinggang Wu,Haobo Gou,Ning Zhang,Zhiqiang Xu
The steel industry faces the dual pressures of carbon reduction and ultra-low emissions throughout production, making integrated CO2 capture and deep desulfurization of blast furnace gas essential. Conventional alcohol amine-based scrubbing agents have limitations such as low absorption capacity, regeneration difficulties, and high corrosivity. To address these issues, a CO2, COS (carbon oxysulfide), and H2S integrated high-efficiency removal biphasic absorbent was developed. The novel biphasic absorbent composed of sulfolane (SF), diethanolamine (DEA), 2-amino-2-methyl-1-propanol (AMP), piperazine (PZ), and H2O, achieved a removal rate of over 90% for CO2, COS, and H2S, under the tested conditions, while exhibiting low rich-phase viscosity and acceptable anti-corrosion performance. Optimal regeneration was attained at 110–120 °C, with regeneration efficiencies exceeding 85% and an estimated energy consumption of approximately 2.51 GJ per ton CO2 (about 33.9% lower than 30 wt% MEA), while exhibiting stable cyclic regeneration. Spectroscopic analyses (FTIR, 1H/13C NMR) indicate that H2S undergoes proton transfer to amine sites to form bisulfide containing quaternary ammonium salts, whereas CO2 and COS react with amine functionalities to yield carbamate and thiocarbamate species that preferentially partition into the aqueous-rich phase; sulfolane remains in the organic phase, enabling liquid–liquid separation. This research provides a promising basis for simultaneous pollution control and CO2 mitigation in the steel sector, aligning ultra-low emission targets with decarbonization efforts and offering potential environmental and economic benefits.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Zhengjun Su,Jing Ma,Haiwei Yang,Yunpan Ying,Dahuan Liu,Qingyuan Yang
The development of polyamide nanofiltration membrane is hindered by its low permeability. Rationally designing thin film nanocomposite (TFN) membranes through adding filler to polyamide layer is a promising method for improved nanofiltration performance. However, regulating the morphology and polymerization process of polyamide layer through the design of filler morphology is challenging. In this work, we designed a ZIF-8 nanowire regulated TFN membrane. Different from the reported nanomaterials, the irregular surface of ZIF-8 nanowire is conducive to forming crumpled membrane surface by controlling the interfacial polymerization process. Meanwhile, ZIF-8 nanowire can construct net-like channels in polyamide matrix for improved water permeability. The influence of ZIF-8 nanowire on morphology, chemical property, and desalination performance of TFN membrane were studied. As a result, the optimized TFN-Z2 membrane with ZIF-8 nanowire loading of 0.10 w/v% shows a flux of 6.42 LMH bar −1 , which increased by 189 % than that of the polyamide membrane. Meanwhile, the TFN-Z2 membrane maintained excellent rejection performance for salts (93.60 %, 91.20 %, 91.20 %, and 78.60 % for Na 2 SO 4 , MgSO 4 , MgCl 4 , and NaCl, respectively). The results can provide a foundation for the preparation of more advanced membranes.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 4.3
Han Jiang,Shugang Xu,Zeyuan Liu,Qian Liu,Danhui Wang,Xiuchen Li,Shouhai Zhang,Xigao Jian
Organic solvent nanofiltration (OSN) technology, which can achieve efficient separation of small molecules without phase change and greatly reduce energy consumption, is of great significance in contributing to the goal of ‘carbon neutrality’. The separation performance of OSN membranes directly affects the efficiency of the OSN process. Thin film composite (TFC) membranes prepared by interfacial polymerization (IP) have high ion selectivity and permeability. In this study, TFC membranes were prepared using poly(m-phenylene isophthalamide) (PMIA) as the substrate with excellent thermal and chemical stability, and piperazine (PIP) and trimesoyl chloride (TMC) as the reactive monomers. The effects of different IP conditions on the properties of TFC membranes were systematically studied. The experimental results showed that the optimized TFC membranes exhibited good water flux (57.6 L·m −2 ·h −1 ) and Na 2 SO 4 rejection (99.6 %) with a selectivity of up to 200 for monovalent and divalent salts (NaCl/ Na 2 SO 4 ) at 0.5 MPa. Notably, the membrane demonstrated stable ethanol permeance over a 60-hour continuous test. At the same time, the PMIA-PA TFC NF membrane can remain stable in alcohols, alkanes, ketones, benzenes, as well as acid and alkali solvents after one week, with strong solvent resistance
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Mengyao Chen,Tianqi Zheng,Hangqing Xue,Yeqiang Lu,Congjie Gao,Lixin Xue
Cross-substrate counter diffusion (CSCD) between imidazole and Zn(II)-loaded polyamide (PA) layers is carried out to in-situ grow zeolitic imidazole framework-leaf (ZIF-L) particles and improve the nanofiltration (NF) performances of negatively charged NF membranes. To achieve uniform distribution of Zn(II) in the formed PA layer, Cyclen was used to complex Zn(II) precursors during the interface polymerization (IP) between piperazine (PIP) and trimesoyl chloride (TMC) to dissolve the Zn(II)/PIP precipitation in the aqueous phase. Results showed that the addition of Cyclen improved the uniform dispersion and firm combination of ZIF-L particles (PTs) in the PA layers, improving both the water permeance and salt rejection of the formed TFN NF membranes. Under optimal conditions, TFN-PC 0.10-0.15 /ZIF membrane achieves a Na 2 SO 4 rejection of 90.2-96.8%, a pure water permeance of 25.8-32.8 L·m -2 ·h -1 ·bar -1 , a NaCl/Na 2 SO 4 mixed salt separation factor of 9.0-29.8, and good anti-fouling and operational stability.
✓ 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）