JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2024
·
IF 5.9
Chengzhi Liu,Yanqi Zou,Kunmei Su,Zhenhuan Li
The emission of significant amounts of CO 2 from human industry has caused severe environmental damage, necessitating effective CO 2 capture methods for sustainable development. Membrane technology stands out as one of the most effective and economical solutions. In recent decades, polymer membranes have been recognized for their viability in gas separation applications. Aliphatic polycarbonates (APCs) are particularly notable due to their high chain segment flexibility, degradability, ease of processing, and the presence of carbonate groups, which enhance their affinity for CO 2 . This study uses a one-pot melt polycondensation process to synthesize three high-molecular-weight APCs: poly(1,4-butylene carbonate) (PBC), poly(1,5-pentamethylene carbonate) (PPC), and poly(1,6-hexamethylene carbonate) (PHC) from dimethyl carbonate and various diols. To improve the mechanical properties of the APC separation membranes, capping modification was applied. The molecular weights of PBC, PPC, and PHC were 6.48 × 10 4 g/mol, 4.78 × 10 4 g/mol, and 5.76 × 10 4 g/mol, respectively. These membranes were prepared by the evaporative solvent method. The PHC membrane demonstrated a CO 2 permeability of 20.84 Barrer and a CO 2 /N 2 selectivity of 22.24 at 35 °C under 0.1 MPa, approaching Robeson’s upper bound and indicating substantial potential for application.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
高影响因子
Heliyon
·
2024
·
IF 3.4
Yuan Lv,Linrong Wu,Jiangyu Yan,Zhisen Shen,Junjun Zhang,Xiaoqin Zhang,Tian Li
Perforation of the tympanic membrane (TM) is a common condition that often requires a scaffold as a support for surgery. However, because of the external environment of the auditory canal, the scaffold could become bacterially infected and prevent the TM from healing. As a result, the perfect scaffold should have both antibacterial and biomimetic qualities. In this study, the biodegradable biomaterial poly(1,4-butylene carbonate) (PBC) films containing levofloxacin (LEV) was successfully prepared for the first time. The results showed that the hydrophilicity of the LEV/PBC film was improved after the addition of LEV, and the tensile strength was also complied with the requirements of the standard. The created antibacterial film demonstrated excellent antibacterial properties. In vitro hemolysis experiments revealed no risk of hemolysis for the new material, and the cytotoxicity study further confirmed its non-cytotoxic nature. Overall, LEV was a good component of PBC/LEV film, which is expected to be used for TM repair in the future.
研究领域:
生物材料学
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耳科学
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抗菌材料研究
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DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2021
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IF 4.598
Yang Zhang,Rui Feng,Zhuo Chen,Tingting Zhao,Yanyun Ju,Shengliao Yan,Shaokun Song,Guanghui Zhao,Lijie Dong
Polymer dielectrics have wide application in advanced electronic devices and pulsed power systems because of their easy processing, low cost, outstanding flexibility and high breakdown strength ( E b ). However, the low energy density ( U e ) of polymer dielectrics restricts the miniaturization and integration of dielectric capacitors. Herein, poly(1,4-anthraquinone) with rigid molecular chains was synthesized and introduced into poly(vinylidene fluoride) (PVDF). Benzene rings on the main chains and large steric hindrance in the side chains limit the intramolecular rotation and thus endow poly(1,4-anthraquinone) with rigid chain structure. Moreover, extended π system and delocalization of electrons minimize the energy of polymer chain, which gives poly(1,4-anthraquinone) more prominent durability and stability. The introduction of poly(1,4-anthraquinone) reduces the crystallite sizes of PVDF and strengthens Young’ modulus of the films. Consequently, both high E b and U e are achieved and increased by 170% and 62% compared with pristine PVDF, respectively. This research provides a new strategy to prepare PVDF-based dielectric film with superior energy storage performances.
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
POLYMER
·
2023
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IF 4.6
Jiani Gao,Yilong Chu,Yuyang Yan,Shuangshuang Zhou,Xiaowei Li,Cheng-Bo Li
Here, poly(1,3,5-tri(thiophene-2-yl)benzene) (PTTB) membrane electrodes with porous surface structures were prepared by using an electropolymerization method. Firstly, a series of PTTB film electrodes with different morphologies are obtained, including open nanotubes , stacked flocs, dispersed cauliflower-like, and aggregated spheres, by separately depositing the PTTB films on different conductive substrates (GCE, silicon wafers, ITO , FTO). Secondly, this study explored the factors affecting the photoelectric properties and stability of PTTB film electrodes by varying the solvent, electrochemical method, scan rate, and number of scan cycles. Finally, the CV method and DCM/ACN mixed solvent were used in this experiment, and the best photoelectric effect of 3.2 μA was obtained under 3 scan cycles. In this study, the factors influencing the properties of PTTB by electrochemical polymerization methods are obtained through the exploration of PTTB film electrodes, providing a reference value for further combining PTTB films with other materials to prepare composite photoelectrodes .
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 17
·13850-13859
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IF 2.779
Zhang Yang,Yan Fei,Lao Sijia,Li Xiaoyu,Dong Lijie
Dielectric materials with high energy density ( U e ) and breakdown strength ( E b ) have played crucial roles in electronic power system and national defense weapons. However, current dielectric materials exhibit low energy storage performance, which restricts the miniaturization and lightweight of electronic devices. Herein, a novel strategy toward synchronously achieving high U e and E b of dielectric materials is designed by introducing low-loading poly(1,5-anthraquinone) (P15AQ) into poly(vinylidene fluoride) (PVDF). The dielectric constant ( ε r ) match between P15AQ and PVDF promotes the uniform distribution of electric field and prevents the early breakdown damage. Meanwhile, introducing P15AQ into PVDF film improves the mechanical properties and decreases the leakage current density. As a result, U e and E b of the composite film reach up to 11.0 J cm − 3 and 559 MV m − 1 , respectively. This work demonstrates that PVDF/P15AQ composites with remarkable comprehensive performance have the potential to achieve wider application in dielectric fields.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
Materials
·
2020
·Vol. 13
·期 3
·755
·
IF 3.057
Lingfei Li,Qiu Sun,Xiangqun Chen,Yongjun Xu,Zhaohua Jiang
In this work, poly(1-butene) (PB-1) composite films with multi-walled carbon nanotubes (MWCNT) were prepared by a solution casting method. The relationship between the dielectric properties and the crystal transformation process of the films was investigated. It was indicated that there were two crystal forms of I and II of PB-1 during the solution crystallization process. With the prolongation of the phase transition time, form II was converted into form I. The addition of the conductive filler (MWCNT) accelerated the rate of phase transformation and changed the nucleation mode of PB-1. The presence of crystal form I in the system increased the breakdown strength and the dielectric constant of the films and reduced the dielectric loss, with better stability. In addition, the dielectric constant and the dielectric loss of the MWCNT/PB-1 composite films increased with the addition of MWCNT, due to the interfacial polarization between MWCNT and PB-1 matrix. When the mass fraction of the MWCNT was 1.0%, the composite film had a dielectric constant of 43.9 at 25 °C and 103Hz, which was 20 times that of the original film.Keywords:poly(1-butene);multi-walled carbon nanotubes;solution crystallization;dielectric properties;breakdown strength
研究领域:
材料科学
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化学工程
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DOI
PubMed
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·Vol. 31
·期 12
·e202403915
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IF 3.7
Qi Pan,Wanliang Yang,Chen Wu,Dongjia Xie,Yuan Wang
Graphical A ploy(1,3-dioxolane) (PDOL) layer was constructed by a Al(OTf) 3 -induced in-situ solidification process between the interface of LATP and anode/cathode. The as-prepared PDOL as an “interfacial adhesive” can fill the gap between the LATP and the electrode, providing a better interfacial contact and reduced interfacial impedance. Such interfacial adhesive layer not only effectively prevents Li metal from reducing LATP but also provides intimate interface contact and limits unnecessary electron transport. Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) as the solid-electrolyte has attracted much attention for Li-ion batteries. However, the unstable LATP/Li interface and the insufficient contact between the anode/cathode and LATP usually lead to the structural collapse of LATP and the large solid–solid interfacial resistance for Li+ transport. Herein, a poly(1,3-dioxolane) (PDOL) adhesive layer was constructed by a Al(OTf) 3 -induced in-situ solidification process between the interface of LATP and anode/cathode. Such PDOL interfacial adhesive layer alleviates adverse reduction reactions at the LATP/Li interface and provides stable and well-contacted bilateral electrode interfaces. Benefitting from the PDOL interfacial adhesive, the Li|adhesive-LATP|Li symmetric cells achieve a current density up to 0.7 mA cm −2 and exhibit a good cycling stability for more than 2750 h at 0.1 mA cm −2 , and the Li|adhesive-LATP|LiFePO4 solid-state batteries with interface modification exhibit a capacity of 158 mAh g −1 at 0.2 C with a retention of 94 % after 100 cycles.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2014
·Vol. 21
·期 11
·1-8
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IF 1.897
Ran Xiaoqi,Yi Shixiong,Liang Liefeng,Yang Xiao
The effect of oxygen on photodegradation of π-conjugated aromatic poly(1,3,4-oxadiazole)s (POD) was studied in detail. The results obtained by tensile test, UV-spectra and ATR-FTIR revealed that the oxygen was indispensable during photodegradation of POD. The occurrence of photodegradation of POD must be combination of UV exposure and oxygen simultaneously. The state of oxygen during photodegradation of POD was investigated by nitrotetrazolium blue chloride (NBT) method. The result illustrated that the oxygen was transformed into superoxide anion radical through accepting one electron during UV exposure. Results of tensile tests and UV-spectra further proved that the superoxide anion radical could combine with excited POD to form an unstable product that lead to occurrence of photodegradation. Singlet oxygen was also investigated and the result showed that POD appeared to be stable to singlet oxygen.
研究领域:
材料科学
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化学
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DOI
高影响因子
WATER RESEARCH
·
2014
·
IF 5.323
Chao Shan,Zhiyao Ma,Meiping Tong,Jinren Ni
Fe 3 O 4 @SiO 2 magnetic nanoparticles modified by grafting poly(1-vinylimidazole) oligomer (FSPV) was fabricated as a novel adsorbent to remove Hg(II) from water. Fourier transform infra-red spectroscopy confirmed the successful grafting of oligomer , and thermogravimetric analysis showed FSPV had a high grafting yield with organic content of 22.8%. Transmission electron microscopy image displayed that FSPV particles were polymer-coated spheres with size of 10–20 nm. With saturation magnetization of 44.7 emu/g, FSPV particles could be easily separated from water with a simple magnetic process in 5 min. The Hg(II) adsorption capacity of FSPV was found to be 346 mg/g at pH 7 and 25 °C in 10 mM NaCl. Moreover, the removal of Hg(II) by FSPV was not obviously affected by solution pH (from 4 to 10) or humic acid (up to 8 mg/L as TOC). The presence of seven common ions including Na + , K + , Ca 2+ , Mg 2+ , Cl − , NO 3 − , and SO 4 2 − (up to 100 mM ionic strength) slightly increased the adsorption of Hg(II) by FSPV. X-ray photoelectron spectroscopy analysis revealed that the N atom of the imidazole ring was responsible for the bonding with Hg(II), whereas the bonding of Hg with N did not result in cleavage of Hg–Cl bond in HgCl 2 and HgClOH. The regeneration of Hg(II)-loaded FSPV could be achieved with 0.5 M HCl rapidly in 10 min, and the removal of Hg(II) maintained above 94% in five consecutive adsorption–desorption cycles. Therefore, FSPV could serve as a promising adsorbent for Hg(II) removal from water.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2016
·
IF 5.557
Dong Guo,Yi Zhi Zhuo,Ao Nan Lai,Qiu Gen Zhang,Ai Mei Zhu,Qing Lin Liu
There is a balance between ionic conductivity and dimensional stability in anion exchange membranes (AEMs). High conductivity resulting from densely charged groups is normally accompanied with high water uptake and excessive swelling. Herein, a series of novel AEMs with interpenetrating network was prepared by the incorporation of poly(vinylbenzyl chloride) (PVBC) and poly(1-vinylimidazole)(PVIm) into the PVA matrix. PVBC and PVIm act as bifunctional macromolecular crosslinking agents to provide both imidazolium cations and to form crosslinked network in the membranes. The resulting AEMs were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The effect of crosslinking density on conductivity, water uptake, swelling ratio and stability was investigated. The results reveal that the addition of PVBC-c-PVIm could be simultaneously conducive to higher conductivity and lower swelling ratio. Notably, the membrane containing 50 wt% PVBC-c-PVIm had IEC of 1.86 meq g −1 , water uptake of 39.4%, and hydroxide conductivity of 21.9 mS cm −1 at 30 °C. A maximum power density of 37.1 mW cm −2 is achieved at a current density of 64 mA cm −2 . The crosslinked AEMs also exhibit excellent alkaline stability in a 4 M KOH solution at 60 °C for 1320 h.
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
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Yanrong Wang,Chenxi Zheng,Mengfan Zhao,Xuemei Wang,Yaqiong Su,Guowang Diao,Caixing Wang
Electroactive organic materials, characterized by their flexible molecular architecture and rapid reaction kinetics, demonstrate an enormous potential for applications in aqueous zinc-ion batteries (AZIBs). However, small-molecule organic electrode materials often encounter dissolution-induced capacity decay, whereas polymeric counterparts, despite their limited solubility in electrolytes, confront poor conductivity issues. To tackle these challenges, optimizing molecular structures and synthesis routes is paramount. In this study, we have elaborately designed an electrochemical polymerized poly(1,5-diaminonaphthalene), termed PDAN-1, as a high-performance cathode material for AZIBs. Compared to the chemically polymerized counterpart, termed PDAN-2, PDAN-1 exhibits significantly enhanced electrochemical performance, owing to its markedly reduced electrochemical resistance. Specifically, the PDAN-1 cathode achieves a high discharge capacity of 243 mAh g–1 at a current density of 0.1 A g–1. Additionally, it exhibited long-term cycle stability, retaining over 85% of its capacity even after 2700 cycles at 2 A g–1. Impressively, even under a substantial mass loading of 10 mg cm–2, PDAN-1 maintains a discharge capacity of 170 mAh g–1, underscoring its vast potential for practical applications in AZIBs. Furthermore, ex situ analyses and density functional theory calculations collectively reveal that the PDAN-1 cathode operates through a bipolar-type charge storage mechanism, providing insights into its unique electrochemical behavior and further validating its suitability for AZIB applications.
研究领域:
材料科学
·
电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2024
·
IF 1.3
Xinyan Cao,An Xiao,Yafei Hou,Gemeng Liang,You Zhou,Yinjie Shi,Chuang Yue,Yuejin Zhu,Zhian Zhao,Jing Cuan,Weiping Li
Recently, aqueous zinc ion batteries (AZIBs) are experiencing rapid development benefiting to their high safety and increasing electrochemical performance. Among all kinds of AZIB electrode materials, organic materials have attracted attentions due to their unique advantages such as structural flexibility, small volume expansion, abundant Zn 2+ storage sites and environmental friendliness. However, issues involving electrode dissolution, sluggish electrochemical kinetics etc. still hampered the prior choice of organic electrodes. Herein, we designed a poly(1,8-diamino-naphthalene)/ graphene composite aiming to improve the availability of organic electrodes in AZIBs. By means of constructing high conducting graphene network and the synergetic effect between the two components, the electronic transfer kinetics and overall electrochemical performance of PDAN organic electrode have been fully improved. The organic-inorganic composite exhibited an initial specific capacity of 240 mA·h·g −1 and stable galvanostatic cycling after 1000 cycles, exceeding the original polymer.
研究领域:
材料科学
·
电化学
✓ 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）