POLYMER INTERNATIONAL
·
2023
·Vol. 72
·期 8
·704-710
·
IF 3.2
Dong Wang,Pengxuan Zheng,Zhiwei Yu,Xiangwei Wang,Tingxi Li
Polymer electrolytes are being considered as an effective solution for electrochemical devices to replace currently used organic liquid electrolytes due to their excellent mechanical properties and security. Herein, we prepared stretchable polymer electrolytes (SPEs) doped with poly[(2-acrylamido-2-methylpropanesulfonic acid)- co -poly(ethylene glycol) dimethacrylate] (P(AMPS- co -PEGMA)) and enhanced with poly[(vinylidene fluoride)- co -hexafluoropropylene] (PVDF-HFP), through UV in situ polymerization. The SPEs showed good mechanical performance with an elongation of more than 40% and ionic conductivity reaching the order of 10 −3 S cm −1 . In terms of application, flexible electrochromic devices based on the UV in situ -prepared SPEs were assembled, the color switching performance being still good even after 400 switching cycles and 1000 bending cycles, which indicated that the SPEs could have excellent prospects in application for flexible devices. © 2023 Society of Industrial Chemistry.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
Petroleum Science
·
2019
·Vol. 17
·期 1
·242-254
·
IF 1.846
Yan-feng Ji,Xu-long Cao,Yang-wen Zhu,Hui Xu,Xiu-zhi Sun,Hai-tao Li
Super high molecular weight copolymers of AM/NaA/AMPS were prepared by oxidation–reduction [OR-P(AM/NaA/AMPS)] and controlled radical polymerization [CR-P(AM/NaA/AMPS)]. The resulting copolymers were fully characterized, and the reaction conditions for their preparation were optimized. OR-P(AM/NaA/AMPS), CR-P(AM/NaA/AMPS), and conventional partially hydrolyzed polyacrylamide (HPAM) in brine solution were comprehensively characterized by thermogravimetric analysis, scanning electron microscopy, atomic force microscopy, and dynamic light scattering. OR-P(AM/NaA/AMPS) and CR-P(AM/NaA/AMPS) containing AMPS monomer showed better salt resistance, temperature tolerance, and viscosification property than the conventional HPAM polymer, making them more promising for enhanced oil recovery. Through comprehensive comparison and analysis, it was found that OR-P(AM/NaA/AMPS) was more conducive for high-temperature condition due to the existence of xanthone in OR-P(AM/NaA/AMPS). On the other hand, CR-P(AM/NaA/AMPS) was more suitable for high-mineral atmosphere, which could be attributed to its higher intrinsic viscosity.
研究领域:
化学工程
·
材料科学
·
石油工程
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DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Hang Zhang,Miaomiao Hu,Yun Cheng,Xiaohua Li,Xinyang Zhang,Yujie Ying,Jie Cao,Xiujian Xia,Shusen Zhang,Zhanfu Wei,Jintang Guo
This work proposed an ultra-high temperature set-regulation method to provide a reference scheme for the optimal retarder design of ultra-deep formation oil well cementing slurry. It was found that there was a synergistic retarding effect between 2-acrylamido-2-methylpropanesulfonic acid-based copolymer retarder and 1-hydroxyethylidene-1,1-diphosphonic acid, and the latter could serve as an intensifier for the former to significantly prolong the ultra-high temperature (≥200 ℃) thickening time of cement slurry. The thickening progress mechanism of cement slurry was studied from the perspective of hydration kinetics and mineral content evolution. Results indicated that the content of cement hydration products during the thickening process did not increase gradually and linearly, but increased rapidly within several minutes near thickening time due to the acceleration of hydration. The introduction of intensifier 1-hydroxyethylidene-1,1-diphosphonic acid extended the thickening time by highly delaying the hydration of silicate minerals (C 3 S/C 2 S), while less affected the hydration of aluminate minerals (C 4 AF/C 3 A). Furthermore, the synergistic principle between copolymer retarder and 1-hydroxyethylidene-1,1-diphosphonic acid was proposed from microchemical perspective. Analysis showed that the PO 3 2- was a stronger anchoring group than -COO - and could compensate for the decline of Ca 2+ chelating ability of copolymer retarder caused by decarboxylation and thermal oxidative degradation in ultra-high temperature and alkaline environment, thus further delaying the hydration.
研究领域:
石油工程
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材料科学
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DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2023
·Vol. 234
·期 8
·1-13
·
IF 2.9
Chen Xi,Wang Shuaiyin,Li Danni,Wang Ruiqi,Yang Shaoming,Liu Yongxin,Xu Wenyuan,Zhang Jiali
The catalytic materials for sulfate radical-based advanced oxidation processes with the performance of high activity and stable had attracted significant attention in the field of sustainable wastewater treatment. Here, a novel adsorption-reactive composite catalyst with Fe 3 O 4 impregnated acrylamide-based hydrogel (PAM-AMPS/Fe 3 O 4 ) was designed and synthesized for methylene blue (MB) degradation based on persulfate advanced oxidation processes. For the acrylamide-based hydrogel, the monomer of 2-acrylamide-2-methyl-propanesulfonic acid (AMPS) was added to improve the adsorption performance of the composite, and the maximum adsorption capacity of the selected hydrogel was about 40 mg/g. In the presence of the persulfate activated system, the degradation efficiency of MB of PAM-AMPS/Fe 3 O 4 was significantly increased to a level of 94% in 20 min. This value was far superior to catalytic systems without the AMPS. This outstanding performance was benefiting from the synergetic effects of reduced aggregation of Fe 3 O 4 combined with the enhanced adsorption capacity of PAM-AMPS hydrogel. Their cooperative function promoted oxidative decomposition of MB. In addition, PAM-AMPS/Fe 3 O 4 exhibited a good stability and reusability, and it could maintain high degradation efficiency and activity after three successive cycling tests. And at the same time, the produced dominate oxidizing species for MB degradation in the system were identified as SO 4 •− by the radical quenching experiments. This work laid a foundation for applying PAM-AMPS/Fe 3 O 4 as a highly efficient and stable catalyst for future applications and provided new insights into the design and synthesis of environmentally benign and inexpensive persulfate activators.
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
COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
Yun Dou,Shen Li,Shoujuan Wang,Magdi E. Gibril,Fangong Kong
There are significant issues with commercial separators that must be resolved before they can be used in high-energy-density batteries . These problems include low porosity, poor electrolyte wetting, and low mechanical properties. This study presents a facile method for preparing composite crosslinked hydrogel nanofibers of polyvinyl alcohol (PVA) with 2-acrylamide-2-methylpropanesulfonic acid (AMPS) for lithium-ion battery separators by utilizing methacrylated lignin (LMA) as a bio-based crosslinker . Initially, LMA was synthesized by grafting glycidyl methacrylate (GMA) onto lignin via esterification. Subsequently, a crosslinked hydrogel nanofiber membrane (PVA/AMPS-LMA) was electrospun with varying LMA fractions, which were polymerized by combining free radical copolymerization and esterification reactions. The effectiveness of LMA as a crosslinker was assessed against the N, N′-methylene bisacrylamide (MBA). The study showed that using LMA as a crosslinker significantly improved the membrane's properties. The PVA/AMPS-LMA separator displayed superior features such as mechanical strength , thermal stability, porosity, electrolyte uptake, ionic conductivity , and lithium-ion transference number, when compared with PVA/AMPS, PVA, and Celgard separators. Specifically, the PVA/AMPS-LMA separator demonstrated a high mechanical strength of 24.9 MPa, strong thermal stability at 170 °C with no shrinkage, high porosity (84.3 %), and electrolyte uptake (661.4 %). It also exhibited exceptional ionic conductivity (2.75 mS/cm) and a notable lithium-ion transference number (tLi + = 0.717). In coin batteries, the PVA/AMPS-LMA separator retained over 96 % capacity (142.4 mAh/g) after 200 cycles at 1C. This performance exceeded that of PVA/AMPS, PVA, and Celgard separators, suggesting that PVA/AMPS-LMA separators have the potential to replace their commercial counterparts.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yao Jin,Yudong Yang,Wei Duan,Xuetong Qu,Jianmin Wu
Due to the abuse of antibiotics, antimicrobial resistance is rapidly emerging and becoming a major global risk for public health. Thus, there is an urgent need for reducing the use of antibiotics, finding novel treatment approaches, and developing controllable release systems. In this work, a dual synergistic antibacterial platform with on-demand release ability based on silver nanoparticles (AgNPs) and antimicrobial peptide (AMP) coloaded porous silicon (PSi) was developed. The combination of AgNPs and AMPs (Tet-213, KRWWKWWRRC) exhibited an excellent synergistic antibacterial effect. As a carrier, porous silicon can efficiently load AgNPs and AMP under mild conditions and give the platform an on-demand release ability and a synergistic release effect. The AgNPs and AMP coloaded porous silicon microparticles (AgNPs-AMP@PSiMPs) exhibited an acid pH and reactive oxygen species (ROS)-stimulated release of silver ions (Ag+) and AMPs under bacterial infection conditions because of oxidation and desorption effects. Moreover, the release of the bactericide could be promoted by each other due to the interplay between AgNPs and Tet-213. In vitro antibacterial tests demonstrated that AgNPs-AMP@PSiMPs inherited the intrinsic properties and synergistic antibacterial efficiency of both bactericides. In addition, wound dressing loaded with AgNPs-AMP@PSiMPs showed outstanding in vivo bacteria-killing activity, accelerating wound-healing, and low biotoxicity in aStaphylococcus aureus-infected rat wound model. The present work demonstrated that PSiMPS might be an efficient platform for loading the antibiotic-free bactericide, which could synergistically and on-demand release to fight wound infection and promote wound healing.
研究领域:
药学
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材料科学
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生物医学工程
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微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Shuaiyan Ji,Wei Li,Ningning Lv,Xiaoting Chen
The superhydrophilic/underwater superhydrophobic membrane offers unique advantages in effectively separating oily wastewater. However, the development of membrane materials that can efficiently separate emulsions only under gravity is still a challenge. A crosslinked network copolymer P(MA-AMPS) was synthesized by radical polymerization of N, n-methylenebisacrylamide (MBA), methacrylamide (MA) and 2-acrylamide-2-methylpropanesulfonic acid (AMPS) initiated by potassium persulfate. Then polyvinyl alcohol (PVA) and nano-SiO 2 were inserted to the crosslinked polymer system in order to prepare a P(MA-AMPS)/PVA@SiO 2 hybrid hydrogel. The hybrid hydrogel can be sprayed on the surface of stainless steel mesh (SSM) by a simple spraying method, so as to achieve superhydrophilicity/underwater superoleophobicity. The oil-water emulsion permeation flux reached more than 352.94 L·m −2 ·h −1 , while xhibiting a more than 99.5 % separation efficiency under gravity. The anti-fouling tests demonstrated that the membrane exhibited outstanding anti-fouling performance. Moreover, the combination of stable semi-interpenetrating networks and nanoparticles made the membrane exhibit excellent stability and durable separation ability in complex physicochemical environments.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-26
·
IF 14.7
Ye Zifan,Fu Lei,Li Shuangyu,Chen Ziying,Ouyang Jianhong,Shang Xinci,Liu Yanli,Gao Lianghui,Wang Yipeng
Non-direct antimicrobial cationic peptides (NDACPs) are components of the animal innate immune system. But their functions and association with antimicrobial peptides (AMPs) are incompletely understood. Here, we reveal a synergistic interaction between the AMP AW1 and the NDACP AW2, which are co-expressed in the frog Amolops wuyiensis . AW2 enhances the antibacterial activity of AW1 both in vitro and in vivo, while mitigating the development of bacterial resistance and eradicating biofilms. AW1 and AW2 synergistically damage bacterial membranes, facilitating cellular uptake and interaction of AW2 with the intracellular target bacterial genomic DNA. Simultaneously, they trigger the generation of ROS in bacteria, contributing to cell death upon reaching a threshold level. Moreover, we demonstrate that this synergistic antibacterial effect between AMPs and NDACPs is prevalent across diverse animal species. These findings unveil a robust and previously unknown correlation between AMPs and NDACPs as a widespread antibacterial immune defense strategy in animals.
研究领域:
免疫学
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微生物学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 1
·23-32
·
IF 1.6
Ou Minrui,Li Wanying,Zhang Zihui,Xu Xiaoping
In this work, we synthesized a novel β -cyclodextrin/poly(2-acrylamide-2-methylpropionic acid)/attapulgite (CAMA) hydrogel for uranium(VI) adsorption. Various instrumental techniques such as FTIR, SEM, EDX, and TGA were utilized for characterization of the CAMA. Simultaneously, different important parameters, in specific pH, time, initial uranyl ion concentration and temperature were investigated to evaluate the optimal conditions of the adsorption process. The experiments proofs that the adsorption follows the pseudo-second-order kinetic model so as the Langmuir model, and revealed the maximum adsorption capacity of 434.78 mg g −1 at 298.15 K. Regeneration studies further sighted out the good reusability of the synthesized CAMA hydrogel.
研究领域:
环境科学
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材料科学
·
化学工程
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产品关联
DOI
高影响因子
Journal of Coatings Technology and Research
·
2023
·Vol. 20
·期 3
·979-994
·
IF 2.3
Liu De,Wang Huming,Dong Xuxu,Liu Xiaodan,Dosta Sergi,Zhang Chao,Cao Pan
Marine fouling can cause a series of hazards in the marine industrial field, and the traditional antifouling methods do not fulfill the green antifouling requirement. Herein, a novel DA/PEI/SiO 2 /antibacterial peptide antifouling coating was prepared by a multi-modification approach. Initially, the nanocoatings were prepared by depositing DA, PEI, and SiO 2 on the dopamine (DA)-modified 304 stainless steel (SS) surface, and finally, the DA/PEI/SiO 2 /AMPs composite coatings were prepared by grafting antimicrobial peptides (AMPs). The surfaces of SS before and after modification were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectrometer (XPS), field emission scanning electron microscopy (SEM), contact angle measurement, and 3D optical profilometer. SSN-1 cells were used to evaluate the cytocompatibility of the modified surface. The results revealed that the cells cultured on the modified surface still maintained a good adhesion morphology, demonstrating the superior cytocompatibility of the composite coating. The anti-biofilm and antimicrobial properties of the modified samples were evaluated using Vibrio natriegens . The antibacterial efficiency of SS-DA/PEI/SiO 2 surfaces before and after AMPs modification reached 78.39 and 95.90%, and anti-biofilm efficiency of AMPs modified surface achieved 72.87% corresponding to 44.19% of SS-DA/PEI/SiO 2 . The successful grafting of AMPs improved the antibacterial and anti-biofilm properties of the modified sample surfaces. Electrochemical and stability tests indicated that the modified sample surfaces exhibited excellent corrosion resistance and antifouling stability properties. This research could provide a novel green anti-fouling and anti-corrosion strategy for the marine industry and other related fields.
研究领域:
材料科学
·
表面工程
·
生物医学工程
·
海洋技术
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产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2020
·
IF 3.333
Yong Dong,Liqin Cao,Yongxia Yang,Xiujuan Wu,Jide Wang
Removing dyes and antibiotics from wastewater remains the current requirement for a global health problem. The ionic macroporous adsorbent is an efficient solution to this problem. Herein, a novel sulfonated TiO 2 /poly(acrylamide- co -2-acrylamido-2-methylpropanesulfonic acid) [TiO 2 /P(AM- co -AMPS)] macroporous composite monolith was first prepared by copolymerization of AM and AMPS in m TiO 2 -costabilized CO 2 -in-water Pickering high internal phase emulsions (HIPEs). The composite monoliths were characterized using XRD , SEM, confocal laser scanning microscopy , EDS mapping, FTIR, TGA , and mercury injection methods. The mechanical properties of the TiO 2 /P(AM- co -AMPS) HIPE were also evaluated. The void diameter could be adjusted by changing the density of carbon dioxide and the amount of m TiO 2 . The equilibrium swelling ratios of TiO 2 /P(AM- co -AMPS) with different contents of crosslinking agent of 2, 5, and 10 wt% (AM+AMPS) were 93, 37, and 19 g/g, respectively. TiO 2 /P(AM- co -AMPS) was used to remove methylene blue (MB) and tetracycline (TC) for evaluating the adsorptive properties of the composite monoliths. Results indicated that the main adsorption driving force was the electrostatic attraction between −SO 3 − and MB/TC. Adsorption experiments were conducted using a batch technique. The adsorption capacities of TiO 2 /P(AM- co -AMPS) for MB and TC were 1660 and 1128 mg/g in a wide pH range of 3–10. The equilibrium saturation point could be reached after 90 min for MB and 360 min for TC. Thereafter, the removal of MB and TC by gravity-driven separation was presented. The breakthrough curve and reuse evaluation for the removal of MB/TC were also studied in detail.
研究领域:
环境科学
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材料科学
·
化学工程
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 17
·2111344
·
IF 19.924
Kaicheng Tang,Xiaoyou Wang,Miaomiao Niu,Xinyu Wang,Guanghua Zhou,Jinjin Shi,Yang Yu,Zhangbao Chen,Chong Li
Antimicrobial peptides (AMPs) have aroused extensive attention due to their low incidences of resistance, yet their clinical transformation is thwarted by inferior selectivity and metabolic stability concerns, manifesting as rapid degradation, off-target, and non-selective toxicity. Here, a captivating affinity-filtering strategy is proposed as a feasible solution for such challenges. Specifically, based on the selective affinity of AMPs toward distinct phospholipids, the membrane of host cells (e.g., erythrocytes) is pre-bound to AMPs as the “filter,” which could screen out off-target substances with non-specific affinity while maintaining effective interaction with high-affinity pathogens through competitive binding, realizing precise targeting, and enhanced stability. The practicability of the affinity-filtering strategy has been demonstrated both in vitro and in vivo, through systematic studies on various AMPs and AMPs-modified delivery systems with multiple fungal infection models ( Candida albicans and Cryptococcus neoformans ), which pose severe threats to human health worldwide yet are often neglected. AMP-modified nanoparticles with affinity filtering exhibit reduced off-target toxicity, sufficient binding with target pathogen, as well as a substantially elevated 21-day survival rate from 30% (conventional drug-loaded nanoparticles) to 70%. In summary, this strategy may provide inspiration for overcoming off-target effects in drug targeting and further promote the clinical application of AMPs.
研究领域:
药学
·
微生物学
·
药物递送系统
·
传染病学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）