JOURNAL OF POLYMER RESEARCH
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2025
·Vol. 32
·期 4
·1-18
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IF 2.8
Liu Ziqun,Yu Yunwu,Yuan Yong,Jiang Bin,Liu Changwei,Wang Junhai,Li Ting,Liu Peng,Ma Ying,Fang Yanfeng,Sun Xiaowei
Based on previous studies, we prepared ultrafiltration membranes by cross-linking PEEKWC/PEI using a non-solvent induced phase separation method, this membrane has excellent hydrophilicity. We also incorporated silica (SiO 2 ) into the cross-linked membrane system through distribution blending in this study. The membranes underwent characterization using various methods including SEM, ATR-FTIR, and water contact angle tests. To assess the impact of silica addition on membrane performance, tests were conducted on pure water flux, dye flux, dye retention, salt solution flux, salt-dye mixed solution flux, and retention. The results indicated a noticeable improvement in the hydrophilicity of the membrane following the addition of silica, as evidenced by a reduction in the hydrophilic angle from 22.175° to 6.271°, pure water flux up to 850 LMH at 0.3 MPa. Moreover, the retention performance of the membrane was enhanced, with the Congo red solution reaching a retention rate of 99.9% at 0.3 MPa pressure. Subsequently, a fixed silica ratio was chosen (2wt%), and different ratios of silane coupling agent were added using the distribution blending method to explore their effects on membrane performance. The tests revealed an improvement in the retention performance, the group with the largest change in the Congo Red cut-off rate, with an increase in the Congo Red cut-off from 88.7% to 97.9%.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
Coatings
·
2023
·Vol. 13
·期 11
·1845
·
IF 3.4
Zhimin Cao,Mingyi Zhu,Xuxu Dong,De Liu,Pan Cao
An innovative antifouling composite coating comprising dopamine (DA), polyethyleneimine (PEI), and silica (SiO2) was developed through a straightforward and environmentally friendly approach. Initially, silica nanoparticles comodified with DA and PEI were meticulously deposited onto 304 stainless steel surfaces pretreated with dopamine to achieve a uniformly distributed nanocomposite surface. Comprehensive analytical techniques, including Fourier transform infrared spectrometry (FTIR), X-ray photoelectron spectrometry (XPS), field emission scanning electron microscopy (SEM), contact angle measurement (CA), and 3D optical profilometry, were employed to affirm the successful preparation of the silica nanocomposite coatings and the effective grafting of MAG II. The antibacterial and antibiofilm performance of the DA/PEI/SiO2-modified surface was rigorously assessed usingVibrio natriegens(V. natriegens), yielding compelling results indicating a substantial 51.4% reduction in biofilm formation on the SS-DA/PEI/SiO2sample surfaces, coupled with an impressive 95.2% decrease inV. natriegensadhesion. This pioneering research introduces an innovative strategy for the development of antimicrobial surfaces with promising applications in medical devices, aquaculture, and related fields.Keywords:surface modification;DA/PEI/SiO2nanocoating;antimicrobial performance;stability properties
研究领域:
材料科学
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生物医学工程
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表面化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 20
·9165-9181
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IF 3.5
Zhao Chen,Yang Gang,Luo Qianxue
The PDA/PEI modification technology is commonly employed to improve the resistance to membrane fouling of polymeric membranes used in the treatment of oily wastewater. Nevertheless, the surface characteristics of membrane materials frequently restrict the implementation of the modification technique in terms of both the amount and speed of deposition. The hydrophobic membranes, such as PVDF and PTFE, have a surface with very low surface free energy and only inert functional groups. This surface is not suitable for the deposition of PDA/PEI. This study utilized plasma etching treatment to break the C–H and C–F bonds on the surface of the PVDF membrane, resulting in the introduction of oxygen-containing functional groups. During the deposition process, the PDA/PEI exhibited a tendency to chemically connect to material surfaces that included oxygen-containing functional groups, such as –OH, by processes such as hydrogen bonding. During the modification procedure, the etched membrane experienced an increase in the mass of PDA/PEI deposition and the strength of interfacial bonding. As a result, the modified membrane acquired improved hydrophilicity and anti-fouling performance. In summary, this study offers useful insights for improving the surface properties of hydrophobic polymeric membranes to prevent membrane fouling.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2022
·
IF 4.119
Yunwu Yu,Yan Wu,Chunyang Xie,Xiaowei Sun,Yongbin Wang,Peng Liu,Yan Wang,Changwei Liu,Ye Wan,Wenhao Pan,Tianwei Li
For the removal of textile dyes, an effective alternative to fabricate tight ultrafiltration membrane was adopted. A series of tight ultrafiltration membranes based on PEEKWC/PEI covalent crosslinking structure were prepared by phase inversion method and showed high-flux and good antifouling performance attributed to the enhancement of hydrophilicity by PEI. The top-surface of the UF membranes was with a water contact angle in range of 24.33° and 40.10° indicating the excellent hydrophilicity. These membranes containing PEI-based positively charged water channel showed high permeability for pure water and salt solutions. As the content of PEI in membrane reaching 20 wt%, the pure water permeability and pure water flux at 3 bar could reach 308 L·m −2 ·h −1 ·bar −1 and 925 L·m −2 ·h −1 , respectively. The pure water flux could even reach 1526 L·m −2 ·h −1 at 5 bar. At the operation pressure of 3 bar, all the UF membranes showed good single-component BBR rejection between 94.87 % and 97.73 %. The rejection of membranes for BBR in dye/salt mixtures was substantially higher than 94.0 % even at a high salt concentration of 60 g/L. The UF membranes with high-flux of pure water and dye solution were discussed, which could be a promising alternative for sustainable textile wastewater treatment and natural water recovery.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
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2015
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IF 3.65
Hailong Zhang,Xiaoyan Huang,Ya Sun,Guangyou Lu,Ke Wang,Zhigang Wang,Jianfeng Xing,Yang Gao
Effects of hydroxypropyl-β-cyclodextrin grafted polyethylenimine (HP-β-CD-PEI) including HP-β-CD-PEI 600 , HP-β-CD-PEI 1800 , HP-β-CD-PEI 10000 on the pulmonary absorption of insulin, calcitonin, 5(6)-carboxyfluorescein (CF) and fluorescein isothiocyanate dextrans (FDs) with various molecular weights (FD4, FD10 and FD70) were examined by an pulmonary absorption study in rats. Pulmonary absorptions of these poorly absorbable drugs were significantly enhanced by HP-β-CD-PEI 1800 and HP-β-CD-PEI 10000 , and HP-β-CD-PEI 1800 with the concentration of 5% (w/v) provided maximal absorption enhancing effect on pulmonary absorption of these model drugs. The toxicity study demonstrated that HP-β-CD-PEI did not induce any toxic action to rat pulmonary membranes. In addition, zeta potential of insulin solution changed to positive by addition of various HP-β-CD-PEI, meanwhile, the degree of positive charge was linearly correlated with absorption enhancing effect of HP-β-CD-PEI, suggesting that positive charge of HP-β-CD-PEI might be related to their absorption enhancing mechanisms for enhancing pulmonary absorption of insulin in rats. In conclusion, HP-β-CD-PEI is a potential and safe absorption enhancer for improving absorption of hydrophilic macromolecules especially peptide and protein drugs by pulmonary delivery.
研究领域:
药理学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Kailu Wang,Shangwei Wang,Xiaoyu Wang,Xiaoqing Wang,Lijun Zheng,Jie Wen,Huan Yang,Hui Zhang
To address the issue of traditional gels being prone to dewatering and failure under reservoir conditions, this study prepared a new type of magnetic smart gel by 'chelating' PEI@Fe 3 O 4 @PEI nanosheets within the PAM-PEI gel network. The nanosheets possess a 'sandwich' structure formed through self-assembly driven by electrostatic forces, with a density of 2.719 g/cm 3 . Under 90 °C and with a NaCl concentration of 25 g/L, the control PAM-PEI gel had a syneresis rate of 5.96 % and a gel strength of 17.13 Pa·s. In comparison, the magnetic smart gel had a syneresis rate of 0 % and a gel strength of 27.38 Pa·s, indicating that the magnetic smart gel outperformed the control significantly. Possible mechanisms by which nanosheets enhance the performance of magnetic smart gels include: enhancing the hydrophilicity of the molecular chains, inhibiting the breakage of C-N bonds in the polymer chains, increasing the gel's resistance to water loss at high temperatures, and hindering the pyrolysis of PAM groups. Lastly, the work explores the advantages of magnetic smart gels in effective plugging, rapid unplugging post-lifespan, and simplified produced water treatment through its controlled operational capabilities. To implement these applications effectively, field devices need to be equipped with innovative designs.
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
Journal of Environmental Sciences
·
2015
·
IF 2.002
Dandan Cheng,Yue Liu,Haiqiang Wang,Xiaole Weng,Zhongbiao Wu
In this study, a series of polyetherimide/SBA-15: 2-D hexagonal P6mm, Santa Barbara USA (PEI/SBA-15) adsorbents modified by phosphoric ester based surfactants (including tri(2-ethylhexyl) phosphate (TEP), bis(2-ethylhexyl) phosphate (BEP) and trimethyl phosphonoacetate (TMPA)) were prepared for CO 2 adsorption. Experimental results indicated that the addition of TEP and BEP had positive effects on CO 2 adsorption capacity over PEI/SBA-15. In particular, the CO 2 adsorption amount could be improved by around 20% for 45PEI–5TEP/SBA-15 compared to the additive-free adsorbent. This could be attributed to the decrease of CO 2 diffusion resistance in the PEI bulk network due to the interactions between TEP and loaded PEI molecules, which was further confirmed by adsorption kinetics results. In addition, it was also found that the cyclic performance of the TEP-modified adsorbent was better than the surfactant-free one. This could be due to two main reasons, based on the results of in situ DRIFT and TG-DSC tests. First and more importantly, adsorbed CO 2 species could be desorbed more rapidly over TEP-modified adsorbent during the thermal desorption process. Furthermore, the enhanced thermal stability after TEP addition ensured lower degradation of amine groups during adsorption/desorption cycles.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Xue Wang,Tingjun Wang,Chengsheng Gui,Hanxiang Guo,Haili Chen
s Bamboo is a sustainable and renewable material. However, its high hydrophilicity and nutrient-rich composition make it highly susceptible to microbial colonization. In this study, a simple two-step strategy was employed to fabricate stable nano-silver particles (AgNPs) containing polymer composites on bamboo surfaces to enhance antibacterial and anti-mold properties. L-3,4-dihydroxyphenylalanine (L-DOPA) was modified onto the bamboo surface via self-polymerization, providing catechol groups capable of chelating and reducing Ag⁺ ions in situ to form AgNPs. The incorporation of polyethyleneimine (PEI) into the L-DOPA could further promote AgNPs formation and enhance stability of the composite coating. The resulting BT/L-D/PEI/Ag sample was systematically characterized by SEM, XRD, FTIR, XPS, EDS, and water contact angle measurements. The results confirmed that L-D/PEI/Ag polymer composites were successfully coated onto the bamboo surface, and the BT/L-D/PEI/Ag exhibited a significantly enhanced silver loading (6.68 wt%) compared to the BT/L-D/Ag (2.97 wt%), corresponding to a 125 % increase. The modified surface showed improved hydrophobicity with a contact angle of 94.7°, effectively inhibiting microbial adhesion. Antibacterial tests revealed that the BT/L-D/PEI/Ag achieved complete (100 %) inhibition against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ), as well as superior antifungal activity against Aspergillus niger ( A. niger ). The synergistic interaction between L-D, PEI and Ag formed an efficient antimicrobial coating, providing a promising strategy for the development of high-value, antimicrobial bamboo materials for sustainable construction and consumer products.
研究领域:
材料科学
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表面工程
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纳米技术
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抗菌技术
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可持续材料
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产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 72
·68371-68378
·
IF 3.289
Zhen Liu,Shaojie Han,Chong Xu,Yuwen Luo,Na Peng,Chenyang Qin,Mingjiong Zhou,Wenqin Wang,Liwei Chen,Shigeto Okada
A novel polymer binder, synthesized via in situ thermal cross-linking of water-soluble polyvinyl alcohol (PVA) and poly(ethylene imine) (PEI) precursor, is applied as a functional network binder to enhance the electrochemical performance of a silicon anode. The Si anode with PVA–PEI binder exhibits high specific capacity (3072.9 mA h g−1) in the initial cycle, high initial coulombic efficiency of 83.8% and excellent long-term cycling stability (1063.1 mA h g−1 after 300 cycles). Furthermore, the Si anode containing PVA–PEI binder also exhibits excellent rate performance, reaching a high specific capacity of 1590 mA h g−1 even at high current density of 10 A g−1. These outstanding electrochemical properties are ascribed to the reversibly-deformable polymer network and the binder's strong adhesion to the silicon particles. This low-cost and eco-friendly polymer binder has great potential to be used for silicon anodes in next generation Li-ion batteries.
研究领域:
材料科学
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电化学
·
能源存储
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Gui-E Chen,Sheng-Nan Zhao,Yi-Ni Shi,Zhen-Liang Xu,Jing Ye
In the realm of wastewater treatment, the removal of grease and the control of microbial reproduction are crucial links. However, the design of a sustainable membrane with high oil filtration efficiency, high water permeability, excellent separation capacity and strong antibacterial function is still a problem that continues to challenge the researchers. In this work, Tannic acid (TA) and polyethylenediamine (PEI) were used as hydrophilic modifiers to combine with dendritic mesoporous silica (DMSN) to prepare a new type of nanocomposite particles (TA-PEI@DMSN). Using glutaraldehyde (GA) as a coupling agent, TA-PEI@DMSN nanoparticles were coated on the surface of polyvinylidene fluoride (PVDF) membrane, and a modified membrane (TA-PEI@DMSN/PVDF) was developed, which was both super-hydrophilic and super-oleophobic underwater conditions. The TA-PEI@DMSN/PVDF membrane can effectively intercept oily substances such as cyclohexane, n-heptane, petroleum ether and n-hexane, achieving an oil rejection rate up to 99.1% for heptane. The modified membrane exhibits superhydrophilicity (CA≈0°) and underwater oil resistance, excellent anti-fouling performance and robust stability. Otherwise, we noticed that the positive charge characteristic of the TA-PEI surface imparts the TA-PEI@DMSN/PVDF membrane with more 99.97% antibacterial activities against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The molecular simulation results show that the wettability and hydrophilicity are significantly improved compared with the unmodified PVDF membrane, which is consistent with the experiment data. The modified membrane performs well and shows great potential for oil-water separation.
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
高影响因子
POLYMER
·
2015
·
IF 3.562
Miao-Miao Xun,Ya-Ping Xiao,Ji Zhang,Yan-Hong Liu,Qi Peng,Qian Guo,Wan-Xia Wu,Yong Xu,Xiao-Qi Yu
A series of polycationic gene delivery vectors were synthesized via Michael addition from low molecular weight PEI and linking compounds with various heteroatom compositions . Agarose gel electrophoresis results reveal that these polymers can well condense plasmid DNA and can protect DNA from degradation by nuclease. The formed polyplexes , which are stable toward serum, have uniform spherical nanoparticles with appropriate sizes around 200–350 nm and zeta-potentials about +40 mV. In vitro experiments show that these polymers have lower cytotoxicity and higher transfection efficiency than 25 KDa PEI. Furthermore, the title materials exhibit excellent serum tolerance. With the present of 10% serum, up to 19 times higher transfection efficiency than PEI was obtained, and no obvious decrease of TE was observed even the serum concentration was raised to >40%. Flow cytometry and confocal microscopy studies also demonstrate the good serum tolerance of the materials.
研究领域:
生物化学
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分子生物学
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基因治疗
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Fanpeng Ran,Yulin Zou,Yixuan Xu,Xiaoyan Liu,Haixia Zhang
A kind of core-shell material with regular shape and size, and uniform composition, is prepared in aqueous phase and used for laccase immobilization. Magnetic Fe 3 O 4 nanoparticle is coated with MoS 2 by self-assembly, and the Fe 3 O 4 @MoS 2 is further coated by polyethyleneimine, which acts as a spacer arm and is beneficial to enzyme immobilization. The nanocarrier affords the high loading capability of 120 mg/g and satisfied activity recovery of 90% for laccase. The immobilized laccase is stable in a wider range of pH (3–10), temperature (20–70 °C) and storage time (1–14 days), as well as having the recyclability (1–10 cycles). The carcinogenic persistent organic pollutants (malachite green, bisphenol A, bisphenol F) in the water are degraded by the immobilized laccase with a higher efficiency (82.7%, 87.6%, 70.6%) than free laccase (14.4%, 85.0%, 48.0%), respectively. It is prospected that the constructed material is qualified as green nanoreactor for biological macromolecules immobilization.
研究领域:
环境科学
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生物技术
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材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）