JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xinjian Zheng,Fei Qi,Qiao Zhang,Xianghua Yu,Huabo Huang,Jiayou Ji,Liang Li
As the demand for high-performance energy storage devices continues to boom, the electrode materials with large specific capacitance and long-term stability for supercapacitors have garnered significant attention. In this study, gallic acid (GA)-incorporated polyaniline (GA/PANI) nanomaterials were prepared through in situ polymerization in different reaction temperatures and different feed proportions. The formation and physicochemical features of GA/PANI were certified by XRD, FTIR, UV-Vis, and SEM analysis. The electrochemical analysis revealed an enhanced specific capacitance of 635 F g −1 at 0.5 A g −1 and a capacitance retention of 96.0% after 10,000 cyclic voltammetry tests at a scan rate of 200 mV s −1 for GA/PANI1:10. The assembled supercapacitor based on GA/PANI1:10 displays a high energy density of 49.2 Wh kg −1 at a power density of 301 W kg −1 . Therefore, these results verified the suitability of GA/PANI nanomaterial as an electrode material for the practical application in supercapacitor with long-term reliability and rate capacity.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 38
·e55959
·
IF 2.7
Mengyun Yu,Weiwei Xu,Jianjun Sun,Zhiyong Liu,Guangjun Ding,Jiangang Gao,Zongrui Zhang
This study demonstrates the preparation of a unique chitosan (CS)/polymethyl methacrylate (PMMA)/polyethyleneimine (PEI) nanofiber (NF) membrane using PMMA as the composite skeleton through an electrospinning method. The chemical and mechanical properties, chromium (Cr) adsorption capabilities, and mass transfer mechanisms of the NF membrane were thoroughly investigated. The findings indicate that the CS/PMMA/PEI NF membranes, with an average diameter of approximately 856.2 nm, exhibits favorable hydrophilicity, effective Cr(VI) adsorption (first adsorption capacity of 226.5 mg g −1 ), and robust mechanical properties (tensile strength of 1.58 ± 0.092 Mpa), which is superior to most reported adsorbents. Moreover, the composite NF membranes exhibit a second adsorption capacity of 194.4 mg g −1 and a tensile strength of 0.739 ± 0.072 Mpa after the second adsorption, indicating a remarkable level of reusability and cycle stability. Additionally, x-ray photoelectron spectroscopy, and structural tests reveal the presence of abundant amino ( NH 2 ) and hydroxyl ( OH) groups in the CS/PMMA/PEI NF membranes, suggesting potential sites for complexation reactions and the reductions of Cr(VI) ions, thereby facilitating effective adsorption and removal of heavy metals. This study introduces a novel and straightforward approach for synthesizing highly effective adsorbents, with have potential implications for the removal of heavy metal ions from wastewater.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 31
·e55721
·
IF 2.7
Tingyu Song,Yonggang Min
A lithium-ion battery separator facilitates lithium-ion transportation and prevents direct contact between the cathode and anode. Polyimide separators exhibited superior thermal stability and electrolyte wettability. In this study, carboxylated polyimide separators were prepared by electrospinning carboxyl group-containing monomers. Polyimide separators were prepared with different content of carboxyl group-containing monomer. Moreover, the thermal property, mechanical property, and electrochemical performance of separators were studied. The carboxylated polyimide separators exhibited lower interfacial resistance and higher ionic conductivity compared with polyimide separators. Moreover, the LiFePO 4 /Li half-cell assembled using the carboxylated polyimide exhibited enhanced cycling stability and rate capability. Therefore, carboxylated polyimide separators with superior electrochemical performances are promising candidates for lithium-ion batteries.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 5
·e56428
·
IF 2.7
Benyuan Yu,Zhongbao Wang,Jie Sun,Jialiang Li,Xin Lei,Shichao Li,Tao Sun,Zhanjun Wu
Multifunctional carbon fiber composite materials capable of storing energy and carrying structural loads have advantages for aerospace structures. In this paper, a structural supercapacitor that consists of an epoxy-based solid polymer electrolytes (E-SPEs) and carbon fiber was proposed. To develop an E-SPEs with better mechanical properties and ionic conductivity, Nano-SiO 2 was introduced into the solid polymer electrolytes. Nano-SiO 2 reinforced E-SPEs (Nano-SiO 2 /E-SPEs) show improved mechanical properties (Young's modulus [ E ] = 0.85 GPa) and ionic conductivity (4.99 × 10 −4 S cm −1 ), compared to E-SPEs without Nano-SiO 2 . Structural supercapacitors were further prepared by combining E-SPEs with carbon fibers. The structural supercapacitor prepared with Nano-SiO 2 /E-SPEs exhibits the higher power and energy density (261.93 W kg −1 and 2.11 Wh kg −1 ) compared to the structural supercapacitor prepared with E-SPEs without Nano-SiO 2 (51 W kg −1 and 0.34 Wh kg −1 ), indicating improved mechanical and energy storage properties for structural supercapacitors after incorporation of Nano-SiO 2 . This strategy has great potential in enhancing performance of structural energy storage composite materials for application in next-generation aerospace vehicles.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Mingti Wang,Shixun Hu,Wenjia Zhang,Yuxiao Zhou,Shangshi Huang,Jiahui Zhang,Qi Zhang,Changlong Yang,Qi Li,Hao Yuan,Jinliang He
Polypropylene (PP) is believed to be a rather promising cable insulating material for high-capacity electric power system with low carbon emission due to its decent thermo-resistance and recyclable nature. In this paper, a new dually chemical grafting modification strategy by methyl acrylate (MA) and acrylic acid (AA) is put forward to tailor the charge transportation behavior in PP, thus further enhancing the electrical properties. Experimental results indicate that the dually grafted PP with 2.3 weight percent (wt%) MA and 1.9 wt% AA shows enhanced volume resistivity and electrical breakdown strength than pure PP, and the space charge injection is significantly suppressed. This work further adopts thermally stimulated depolarization current (TSDC) test and computational analysis based on density functional theory (DFT) to reveal the mechanism of enhancement. The analysis shows that grafted chemical groups can introduce quantities of deep traps and electrostatic potential wells which are strongly correlated with the carbonyl group and would hinder the charge transportation thus improving the electrical insulating performances of PP. This work would provide a new route of PP-based dually grafting modification for the development of high-voltage cable insulation.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yijiang You,Li Liu,Guangfeng Wu
With the rapid advancement of the printing and dyeing industry, water pollution has emerged as a prominent environmental issue, particularly dye wastewater. In order to construct polymeric adsorbents with rich functional groups for efficient adsorption of dye wastewater, hydrogel spherical adsorbent SA/CMC-Kaolin was prepared by using sodium alginate (SA) as the hydrogel skeleton material, carboxymethyl cellulose (CMC) and kaolin as the strength-reinforcing materials. FT-IR, SEM, XRD, and TG were utilized for comprehensive characterization of the microbeads' characteristics and adsorption mechanism. SA/CMC-K composite microbeads were investigated for the adsorption characteristics of methylene blue (MB) in aqueous solution. Adsorption kinetics and thermodynamic models were employed to analyze the adsorption process. Under optimal conditions, SA/CMC-K microbeads demonstrated superior adsorption efficiency for MB, with a maximum adsorption capacity of 84.63 mg/g, a bio-based adsorbent with a high adsorption capacity. The adsorption process exhibited better agreement with the Langmuir isotherm equation and the pseudo-second-order kinetic model. Besides, SA/CMC-K composite microbeads maintained 71.74% adsorption efficiency after five cycles. Overall, the prepared microbeads, which are economical and environmentally friendly, are promising for the absorption of dye wastewater.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Jiyuan Feng,Nan Lv,Cheng Liu,Zhiwei Lyu,Yuteng Zhang,Haifeng Zhang
Facing increasing electromagnetic radiation pollution, soft sensors with electromagnetic interference (EMI) shielding is highly desirable. Here, flexible electromagnetic shielding [polyacrylonitrile/Fe 3 O 4 /polyaniline]//[multiwalled carbon nanotube/polyvinyl pyrrolidone] (denoted [PAN/Fe 3 O 4 /PANI]//[MWCNT/PVP]) Janus membrane is reported for pressure and sliding sensing. The [PAN/Fe 3 O 4 /PANI] layer of Janus membrane as the force and sliding sensing unit can generate direct current-type (DC-type) voltage signals by conducting polymer/metal Schottky junction, whereas [MWCNT/PVP] layer serves as main electromagnetic shielding unit. Under the vertical force and horizontal sliding of aluminum (Al) foil, it can output DC-type voltage signals based on the Schottky contact. The performance of [PAN/Fe 3 O 4 /PANI]//[MWCNT/PVP] Janus membrane for pressure and sliding sensing is appropriately explored and assessed. Moreover, the Janus membrane exhibits excellent shielding effects with average EMI shielding effectiveness (SE) of 37.54 dB in 8.2–12.4 GHz (X-Band) frequency ranges. Thus, based on the asymmetrical double-layer structure, soft DC-type sensor with EMI shielding is achieved, showing utilization potential in wearable electronics and intelligent robots.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 45
·e56214
·
IF 2.7
Licong Jiang,Liyuan Ren,Yongsheng Zhang,Weiliang Zhou,Xinlong Wang,Leqin Xiao
Ammonium polyphosphate (APP) and montmorillonite (MMT) have been widely used in the flame-retardant of polypropylene (PP), but the low synergistic flame-retardant efficiency and their poor compatibility with PP matrix need to be greatly improved. In this work, APP and MMT were encapsulated in the one microcapsule (PU@A-M) at the determined optimal ratio through the “bridging” reactions of diethylenetriamine (DETA) with APP and MMT. Compared with the PP/A + M composites with the physical mixture of APP and MMT, the limiting oxygen index, peak of heat release rate, total heat release, and total smoke production of PP/PU@A-M were decreased by 5.7%, 48.8%, 3.1%, and 20%, respectively. The well-dispersed PU@A-M with charring-forming agent (CFA) generated continuous and compact char layers with C O P, C O Si, and Si O P crosslinking structure. Furthermore, the tensile strength and elongation at break of PP/PU@A-M were enhanced by 4.8% and 36.9%, respectively, as compared with PP/A + M because of good dispersibility and compatibility of PU@A-M in PP matrix.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 27
·e55617
·
IF 2.7
Luze Wang,Boyu Cai,Wendi Xu,Zhonglin Luo,Biaobing Wang
Currently, the flame retardancy of epoxy resin (EP) was achieved at the expenses of the transparency and/or toughness. In the present work, a phosphorus/nitrogen-containing compound (FDNP) was synthesized by one-pot method using 9,10-dihydro-9-oxa-10-phospha-phenanthrene-10-oxide, furfural and N-phenyl-p-phenylenediamine as raw materials, and further adopted as a functional agent for epoxy resin. The results demonstrated that the FDNP remarkably improved the fire safety of EP. The incorporation of 4 wt% FDNP enabled EP to pass UL-94 V-0 rating test and achieve a limiting oxygen index value of 35.5%; meanwhile, the peak heat release rate, total heat release rate and total smoke release were significantly reduced by 41.3%, 41.6% and 72.5% as compared with the pure EP, respectively. What is more, the EP/4 wt% FDNP composite kept almost the same transparency of the pure EP, simultaneously its impact strength was more than doubled as that of the pure EP. Herein, the improved flame retardancy is contributed to a synergistic biphasic flame retardant effect including the formation of a compact protective carbon layer and the release of both non-combustible gases and phosphorus-containing radicals.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yongning Ma,Panpan Li,Peihan Wu,Mingyuan Guo,Yuhao Yang,Xiaolong Li
In photocatalytic anticorrosion perspective, the migration rate of excited electrons from surface layers to substrate steels restricted the performance of g-C 3 N 4 due to the high resistance between interface of g-C 3 N 4 layers and adhesive layers. Herein, an S-scheme g-C 3 N 4 /polyaniline (PANI) heterojunction with face-to-face structure was established by a secondary calcining method. The as-prepared heterojunctions were applied to protect Q235 carbon steel, and the results showed that the anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction is much higher than that of g-C 3 N 4 and PANI coating layers according to salt spray test. Photocurrent intensity indicated that the optimum amounts of g-C 3 N 4 and PANI were 0.06 and 0.09 mL/cm 2 , which are benefit for the transport of excited electrons due to the optimum thickness of coating layers. Furthermore, the S-scheme g-C 3 N 4 /PANI heterojunction can promote the separation rate of charge carriers and suppress the recombination rate at the same time, which are inferred from photocurrent intensity, electrochemical impedance spectra, super-depth-of-field microscope, and photoluminescence investigation. In the last, the enhanced anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction with face-to-face structure was deduced according to mentioned characterization.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 15
·e55228
·
IF 2.7
Shaochan Duan,Jianying Hu,Jingxian Cui,Yan Chen,Tao Ma,Xiaonan Wu
To better serve the steel bridge deck paving project, a novel room-temperature curing acrylate composite polyurethane binder (APUB) was developed as a substitute for traditional asphalt binders. APUB was synthesized by the copolymerization of a custom-made polyurethane prepolymer (BDO-PU) and acrylate. Fourier transformed infrared and proton nuclear magnetic resonance spectroscopy analyses confirmed the presence of carbamate structures in prepolymer BDO-PU. Utilizing tensile strength, breaking elongation and water absorption as optimization criteria, the response surface methodology was used to optimize synthesis process of APUB. The results showed that the optimized parameters for APUB synthesis include an isocyanate index (R) of 1.5, a mass ratio of methyl methacrylate to BDO-PU of 1.1, and a curing agent content of 2.7%. These settings resulted in predicted values of 10.12 MPa for tensile strength, 123.85% for breaking elongation, and 0.075% for water absorption. Experimental validation demonstrated the consistency between the predicted and actual properties of APUB. Further microanalyses, including dynamic mechanical thermal analysis, differential scanning calorimetry, and scanning electron microscope, confirmed APUB exhibits excellent component compatibility and glass transition temperatures suitable for bridge engineering environments. Overall, APUB demonstrates outstanding tensile properties, water resistance, low energy consumption, and potential applications in the steel bridge deck pavement industry.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Jiexiang Ren,Song Chen,Yudong Hou,Xiaocong Deng,Lu Tian,Chao Ma,Sheng-chao Huang,Cuifen Lu
A bio-based reactive flame retardant (PVD) was synthesized using vanillin, phenethylamine, and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). This study aimed to enhance epoxy resin's fire resistance and evaluate the strength of EP/PVD composites for eco-friendly specialized applications. The chemical structure of PVD was confirmed using Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The effect of PVD on the curing kinetics of EP was studied using non-isothermal differential scanning calorimetry (DSC). During combustion, PVD releases ∙PO 2 and ∙PO radicals, which capture the active ∙H and ∙OH radicals generated during the combustion of EP. This results in a significant quenching effect, thereby achieving flame retardancy. EP with 7.5 wt% PVD and 0.49 wt% phosphorus (EP/PVD-7.5) exhibited a V-0 rating in UL-94 vertical burning tests and a limiting oxygen index (LOI) of 32.4%. Additionally, compared to pure EP, EP/PVD-7.5 showed a 41.7% reduction in the peak heat-release rate during cone calorimetry tests. The dual-phase flame-retardant effect of PVD was confirmed by the analysis of the residual char and its pyrolysis behavior. Furthermore, EP/PVD exhibits superior mechanical properties and transparency compared to pure EP, indicating that PVD holds promise as a flame retardant for EP.
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高影响因子
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