Materials Research Express
·
2021
·Vol. 8
·期 6
·065505
·
IF 1.62
Longfei Zhang,Shuai Zhang,Cheng Wang,Wa Li,Lirong Yang,Shanggeng Li,Jiaming Hu,Lin Zhang
A porous material (PEA) was prepared by the ring opening polymerization of polyethylene glycol diglycidyl ether with adenine in a simple sol-gel method. The structure and composition of PEA were characterized by SEM, FT-IR, BET and XRD. The adsorption experiments of copper ion by PEA at different pH, temperature, contact time and initial concentration were studied. The results show that the PEA is macroporous, the optimum adsorption pH is 5 and the saturated adsorption time is 180 min. The maximum equilibrium adsorption capacity of copper ion is 80.1 mg g−1 at 40 °C according to the Langmuir model and the competitive adsorption test shows that PEA has good adsorption on copper ion, but low effect on cobalt, cadmium and nickel. The repeated adsorption experiments show that PEA could still adsorb 82% of the first adsorption capacity after 5 times elution. These results indicate that the PEA can be used as a practical adsorbent for copper ion adsorption in aqueous solution.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 39
·27043-27052
·
IF 10.7
Dezhi Yang,Yanan Yang,Yeying Cui,Yiyang Sun,Tao Zhang
In situ ring-opening polymerization of ether-based monomers has shown promising application in solid-state lithium metal batteries owing to their positive lithium compatibility, mild reaction conditions, and facile preparation. However, typical poly(1,3-dioxolane) (PDOL) based electrolyte still struggles with low ionic conductivity, narrow electrochemical window, and poor thermal stability, which greatly retard its further progress. Herein, we constructed a crosslinked PDOL semi-solid electrolyte initiated by a three-armed crosslinker and high voltage resistant fluorinated solvents, which shows favourable stability toward lithium metal (lithium plating/stripping stably operating for 2700 h at 0.2 mA cm−2 with no significant polarization growth) and a high electrochemical oxidation window of up to 4.6 V. A lithium metal coin cell using this crosslinked semi-solid electrolyte equipped with LFP expresses excellent cycling stability with a capacity retention of 88% for 1000 cycles at 1C. A 50 mA h pouch cell with an NCM811 cathode exhibited favourable working ability. Meanwhile, the crosslinked electrolyte demonstrated better solid-state characteristics and thermal stability compared with a long-chain electrolyte. This work provides a prospective reference for the application of ether-based electrolyte in high safety and high energy density lithium metal batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF PHYSICAL CHEMISTRY B
·
2024
·
IF 2.8
Fengqin Li,Jingjie Zhou,Huibin Liang,Jinyuan Sun,Ke Zhang,Yuqi Liu,Chunyu Wang,Tao Geng
In this study, the AEOnBO2 series of block polyoxybutenol ethers was synthesized by combining the AEO series of polyoxyethylene and preparing 1,2-epoxybutane (BO) block polyether using a semicontinuous method. The synthesis was performed by HPLC, MALDI-TOF-MS, FT-IR, and 1H NMR for structural analysis. The interaction parameters and surface tension of the systems before and after synthesis were studied using surface tension meter. The diffusion process of the systems before and after synthesis was studied using a KRÜSS bubble pressure tensiometer. The surfactant properties of AEOn and AEOnBO2 were evaluated by static and dynamic surface tension measurements. Each system formed a saturated adsorption layer in a water solution. The critical micelle concentration decreased dramatically after the introduction of BO groups, and the diffusion-adsorption process was consistent with the kinetic mechanism of hybrid diffusion. The microscopic self-assembled aggregate micellar behavior of all the systems was investigated using DLS, TEM, and SEM. The micellization process in all systems was spontaneous and enthalpy-driven, forming spherical aggregates, with the BO block reducing the aggregate diameter of the feedstock from 220.06 nm to about one-third of 80.02 nm. In addition, the dynamic contact angle, application, and physicochemical properties such as foaming and foam stabilization of each system were investigated. The contact angle was reduced from 70 to 50° at 120 s of stabilization, with a foam volume of 80 mL in all systems at 200 s. However, the AEOnBO2 showed accelerated foam decay at 500 s, with an increase in the contact angle from 70 to 50° at 200 s, but the AEOnBO2 showed accelerated foam decay at 500 s, with a decrease in the contact angle from 70 to 50° at 120 s stabilization. At 200 s, the foam volume of all systems was 80 mL, but AEOnBO2 showed an accelerated foam decay process, which shows that the BO group can accelerate the foam decay, and the comparative results show that the BO group can also optimize other application properties and physicochemical properties.
研究领域:
材料科学
·
界面化学
·
高分子化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2020
·Vol. 167
·期 13
·130517
·
IF 3.721
Zhaoyu Wang,Lihua Jiang,Chen Liang,Chunpeng Zhao,Zesen Wei,Qingsong Wang
The overcharge issue still occupies a high safety risk for NCM cathode materials with less stable structure. In this work, an original overcharge protection electrolyte additive named as 3-fluoroanisol (3FA) is recommended for NCM 622. The anti-overcharge effect of 3FA was verified in detail by cycle voltammetry, constant-current overcharge and discharge, AC impendence and scanning electron microscopy measurement. The electrolyte conductivity and long-term cycle performance tests were conducted to evaluate the impact of 3FA on the cell system operated in conventional voltage range. The 3FA is electro-polymerized at about 4.4 V and the time from upper cut-off voltage to overcharge state is extended from 5.46 h to 11.82 h in CR2032 cell, no adverse effects are shown during normal use at the same time under the additive amount of no more than 5 wt.%. Moreover, C80 micro-calorimeter test shows that 3FA increases thermal stability of electrolyte and NCM 622 cathode system. The heat production during overcharge was measured further. With the increase of the amount of 3FA added, the heat production during overcharge increases and the peak heat release rate occurs near 4.4 V, which further proves the effect of overcharge protection of 3FA. Thus, 3FA enhances overcharge endurance and thermal stability of lithium-ion battery with NCM 622 cathode.
研究领域:
电化学
·
材料科学
·
能源存储
·
锂离子电池
·
功能材料
·
电极材料
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2023
·Vol. 30
·期 10
·1-8
·
IF 2.8
Zhou Ben,Cao Yu-Ting,Lu Shuai-Wei,Wei Jun
The epoxy intermediates with three hydroxyl groups were synthesized from 2-aminoethanol (ETA) with ethylene glycol diglycidyl ether (EGDE) or resorcinol diglycidyl ether (RDGE), followed by the neutralization of the inherent tertiary amine groups. The intermediate was then reacted with isophorone diisocyanate (IPDI) to produce polyurethane prepolymer, which was further chain-extended and modified by polyethylene glycol (PEG-1000) and polyethylene glycol monomethyl ether (MPEG-1200), respectively. Finally, methyl ethyl ketone oxime (MEKO) was used to block the residual isocyanate (NCO) group, leading to the achievement of the waterborne polymeric crosslinkers containing blocked NCO moieties and active epoxy groups. The structure of the crosslinkers was characterized by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance hydrogen spectroscopy ( 1 H-NMR). TG and DTG profiles show that both crosslinkers can quickly crosslink and cure the resin at temperatures above 96 °C. The mechanical properties of the cured films obtained by applying crosslinkers to electrophoretic coatings were also studied. The results show that the coating prepared by the crosslinker of the RDGE system has the best adhesion and can reach a maximum of 0.66 MPa.
研究领域:
高分子科学
·
材料工程
·
涂料技术
·
有机化学
·
表面化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2021
·Vol. 30
·期 6
·4543-4551
·
IF 1.819
Liu Fangfang,Chuan Xiuyun,Yang Yang,Huang Dubin,He Xin
Solid-state lithium batteries using solid-state electrolytes (SSE) improve both thermal stability and energy density compared with organic liquid electrolytes lithium-ion batteries (LIBs). However, their usage is still challenged by low lithium-ion conductivity and high interfacial resistance between SSE and electrodes, as well as difficulties running at room temperature (RT). Herein, we demonstrate an electrode/solid-state electrolyte interface, in which poly(ether-acrylate) (PEA) network was introduced on the surface of ceramic electrolytes via photo-polymerization, thus dramatically reducing the SSE/Li interfacial resistance from 4822 to 122 Ω cm 2 . As a result, the Li/Li cells can cycle over 500 h at 0.3 mA cm −2 , LiFePO 4 /Li delivers 200 cycles with capacity retention of 91.1% at RT, respectively. This research provides a method to improve the interface contact between SSE and electrodes, and offers possibilities for application of solid-state Li metal batteries under ambient condition.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Omega
·
2017
·
IF 0
Shuyi Wu,Yang Zhang,Jiarui Han,Zhining Xie,Jun Xu,Baohua Guo
To improve the properties of poly(butylene succinate) (PBS), a series of poly[(butylene succinate)-co-poly(tetramethylene glycol)]s (PBSTMGs) with different poly(tetramethylene glycol) (PTMG) contents were successfully prepared by the catalyzed melt polycondensation process. The effect of introducing flexible PTMG segments on the properties was investigated, and they were compared to those of PBS. The differential scanning calorimetry results indicated that the melting temperature, crystallization temperature, and crystallinity of PBSTMG copolymers were slightly lower than those of PBS. Furthermore, these thermal parameters decreased gradually with the increase of PTMG content. Dynamic mechanical analysis showed that there was a significant decline of storage modulus (E′) in the overall temperature range of copolymers compared to that of PBS. The incorporation of PTMG did not modify the crystal lattice of PBS according to the wide-angle X-ray diffraction analysis. Because of copolymerization, the size of the spherulites was reduced at high PTMG contents. The soft domain in the copolymers might contribute to the enhanced tear strength of PBSTMG. The elongation at break and impact strength of PBSTMG copolymers were greatly improved as a result of the phase separation structure and lower degree of crystallinity. Especially, when the PTMG content was 10 mol %, the impact strength of the copolymer reached up to 4.5 times that of PBS. In addition, with more soft segments introduced, the biodegradability of the copolymers became much better than that of PBS.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
JOURNAL OF SEPARATION SCIENCE
·
2022
·Vol. 45
·期 11
·1847-1855
·
IF 3.614
Ben Chen,Haibo You,Liqun Fang,Tingting Lin,Ping Xu,Chu Chu,Shengqiang Tong
Analytical enantioseparations of five N-alkyl drugs, fluoxetine hydrochloride, labetalol, venlafaxine hydrochloride, trans -paroxol, and atropine sulfate, were investigated by reverse phase high-performance liquid chromatography with sulfobutylether-β-cyclodextrin as chiral mobile phase additive. Effects of various factors such as composition of mobile phase, concentration of cyclodextrins, and column temperature on retention and enantioselectivity were studied. Apparent formation constant between methanol, acetonitrile, and sulfobutylether-β-cyclodextrin were determined to be 2.90 × 10 −3 and 1.00 × 10 −4 L mmol −1 under 25°C using UV-spectrophotometry. Van't Hoff plots were used to investigate thermodynamic parameters for enantiomers–stationary phase interaction and formation of inclusion complex. Two retention models were employed individually for evaluation of inclusion complexation between five racemates and sulfobutylether-β-cyclodextrin. The second model with complex adsorption was more accord with the retention behavior of fluoxetine hydrochloride, labetalol, and venlafaxine hydrochloride enantiomers, while the first model was more consistent with the retention behaviors of trans -paroxol and atropine sulfate. In the selected mobile phase, stoichiometric ratio for both of inclusion complex was found to be 1:1.
研究领域:
药学
·
分析化学
✓ 已验证
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2020
·
IF 4.605
Huiqiong Yan,Pan Zhang,Xiuqiong Chen,Chaoling Bao,Rui Zhao,Jisen Hu,Chang Liu,Qiang Lin
To fabricate a hydrophobic pharmaceutical formulation with the use of montmorillonite (MMT), the strong polarity and structural properties of montmorillonite were modified by via simple and convenient wet ball-milling method using the nonionic surfactant , octyl phenyl polyoxyethylene ether , as the modifier, to improve the MMT's affinity to hydrophobic organic drug, ibuprofen . The resultant organo-montmorillonite (OPP-MMT) was characterized by the means of scanning electron microscopy, dynamic light scattering , Fourier transform infrared spectroscopy , X-ray diffraction, transmission electron microscopy , thermogravimetric analyzer, BET-specific surface area measurements, drug adsorption and in vitro release experiments, and in vitro cell viability assay . Experimental results showed that octyl phenyl polyoxyethylene ether was successfully inserted into the interlayer of the raw Na-MMT during the wet ball-milling process. The adsorption and intercalation modification of octyl phenyl polyoxyethylene ether destroyed the rigid structure of Na-MMT, enlarged the interlayer spacing of Na-MMT, and enhanced its specific surface area, pore volume and mean mesopore size, which made it be more conducive to the loading of hydrophobic organic drugs. The adsorption analysis of OPP-MMT on ibuprofen showed that the affinity of OPP-MMT to hydrophobic drugs was better than that of Na-MMT, which was beneficial to the loading of ibuprofen. Moreover, the good affinity of OPP-MMT to hydrophobic drug allowed it to exhibit good controlled release properties for the drug delivery.
研究领域:
材料科学
·
药学
✓ 已验证
DOI
高影响因子
Advanced Membranes
·
2023
·
IF 0
Mohammed Kamal Hadi,Liru Su,Yuan Li,Abdalazeez Ismail,Sambasivam Sangaraju,Fen Ran
Polyethersulfone (PES) polymers are useful for a variety of membranes' bio-related applications. However, due to its failure to satisfy certain performance and biocompatibility standards, PES requires further surface modification. Herein, we report a facile and flexible method of PES membrane modification by combining the synthesis of silicon oxide nanoparticles grafted with polyvinylpyrrolidone (PVP) as hydrophilic macromolecules via reversible addition fragmentation chain-transfer polymerization (RAFT) and aminated polyethersulfone. The blending of polyethersulfone-modified membranes with SiO 2 @PVP and aminated polyethersulfone results in a robust, hydrophilic, and biocompatible surface. This research work uniquely uses this strategy to stabilize the existence of the hydrophilic modifiers (SiO 2 @PVP and aminated polyethersulfone) within the membrane matrix. Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) are used to analyze the prepared polymer brush and the modified membranes. The modified membranes demonstrate high pure water flux at 345 L m −2 h −1 and bovine serum albumin (BSA) rejection at 98 %. The prepared membranes also show favorable hydrophilicity with a contact angle of 46.8° compared with pristine polyethersulfone at 79°. Furthermore, the modified membranes demonstrate an acceptable degree of blood biocompatibility according to partial thromboplastin time (APTT), prothrombin time (PT), thrombin time (TT), and fibrinogen (FIB) concentration analysis. Based on inductively coupled plasma optical emission spectroscopy (ICP-OES), the silicon nanoparticle leaching in permeate is in a safe range. Accordingly, the modified polyethersulfone membrane is safe and suitable for hemodialysis and bio-related applications.
研究领域:
高分子化学
·
纳米材料
·
生物医学工程
·
表面改性
·
膜科学
✓ 已验证
DOI
JOURNAL OF MEMBRANE SCIENCE
·
2014
·
IF 4.908
Tao Xiang,Chong-Dan Luo,Rui Wang,Zhi-Yuan Han,Shu-Dong Sun,Chang-Sheng Zhao
A new method to prepare ionic-strength-sensitive membrane with improved anti-fouling property and blood compatibility is developed via in situ cross-linked polymerization of sulfobetaine methacrylate (SBMA) in polyethersulfone (PES) solution and a liquid–liquid phase separation technique. The modified membrane is characterized by attenuated total reflectance-Fourier transform infrared spectra (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), 1 H NMR measurements, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and water contact angle (WCA) measurement. The membrane with high PSBMA content shows obvious ionic-strength-sensitive property and ionic-strength reversibility, which are expressed by the fluxes of salt solutions. Meanwhile, with the increase of the PSBMA content in the membrane, the anti-fouling property and blood compatibility are considerably improved.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 7
·5323-5333
·
IF 3.201
Tao Xiang,Ting Lu,Wei-Feng Zhao,Chang-Sheng Zhao
Smart materials with controllable responses to various stimulations offer considerable potential in many applications. Herein we report a simple and efficient method to fabricate ionic strength- and thermo-responsive polyethersulfone composite membranes using zwitterionic copolymers of sulfobetaine methacrylamide (SBMI) and sulfobetaine methacrylate (SBMA). The permeability of the modified membranes could be adjusted by varying the ionic strength from 0 mol kg−1 to 1.0 mol kg−1 and/or varying the surrounding temperature from 15 °C to 90 °C, and both the responses were reversible. The thermo-response transition temperature could be regulated by changing the chemical compositions of the zwitterionic copolymers. Furthermore, the zwitterionic copolymer modified membranes exhibited excellent antifouling resistances to protein solutions and surfactant-stabilized oil-in-water emulsions. Their ionic strength- and thermo-responsive flux, separation ability, and excellent antifouling properties endowed the membranes with a wide range of applications in the field of separation.
研究领域:
材料科学
·
环境工程
·
生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）