JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·Vol. 142
·期 5
·e56455
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IF 2.7
Miao Cao,Qiaoyi Xiao,Bo Wu,Zhisheng Luo,Zhengwei Dai,Jie Yi
Marine biofouling is a major international challenge since it is responsible for several environmental problems and economic losses. Developing a novel antifouling coating with good water resistance, adhesion, and controlled degradation performance is crucial to solving the problem. Herein, a series of waterborne polyurethane emulsions were synthesized using the prepolymerization chain expansion and self-emulsification method, with varying contents of glycerol laurate (GL) as the post-chain extender. The findings demonstrated a notable enhancement in the controllable degradation performance, adhesion, marine antifouling properties, and water resistance with an increase in the concentration of GL. In particular, the film exhibited the most optimal overall properties when the introduction amount of GL was 2 wt%. The absorption rate of the artificial seawater (ASW) reached a state of equilibrium when GWPU2 was immersed in ASW for 60 days, with a final value of approximately 18.5%. The release rates of the GWPU2 antifouling coatings were observed to be the lowest at approximately 120 days, with a rate of approximately 37.59 μg/cm 2 /day. The long-term antifouling capability of the GWPU resins was demonstrated in marine field tests, wherein they exhibited sustained antifouling activity for a period exceeding 9 months. In particular, GWPU2 exhibited noteworthy antifouling performance.
研究领域:
材料科学
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海洋科学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Zhangcheng Gao,Lianfang Feng,Xueping Gu,Jintang Duan,Mingzhe Jiang,Cailiang Zhang
The combination of aromatic and aliphatic structures can endow polyurea with distinct performance advantages. A one-step feeding method is used to synthesize linear hybrid aliphatic/aromatic copolyureas by varying the ratio of m -phenylenediamine (MPD) and polyoxypropylenediamine (D2000) reacting with 4,4′-diphenylmethane diisocyanate (MDI). Real-time Fourier-transform infrared spectrometer monitoring reveals that D2000 exhibits higher reactivity than MPD. Consequently, in the MDI/MPD/D2000 system, D2000 initially reacts with MDI to form an isocyanate-terminated prepolymer, which subsequently reacts with MPD. Compared with the two-step feeding method, this approach successfully eliminates biuret formation and enhances tensile strength. Additionally, decreasing the molar ratio of D2000 to MPD ( λ m ) reduces the size and degree of microphase separation in the polyurea by increasing the ordered hydrogen bonding and benzene conjugation, leading to an increase in tensile strength. Specifically, as λ m decreases from 70 mol% to 30 mol%, the degree of microphase separation decreases from 0.47 to 0.2, causing the tensile strength to rise from 28 to 48 MPa. Further reducing λ m to 30 mol% decreases the degree of microphase separation to 0.16, resulting in an increase in tensile strength to 78 MPa.
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
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 47
·e56268
·
IF 2.7
Zhenjie Yuan,Siqi Huang,Wenduo Chen,Dazhi Jiang
By combination of UV curing and frontal polymerization, interpenetrating polymer networks (IPNs) based on diglycidyl ether of bisphenol-A (DGEBA) epoxy resin and polydicyclopentadiene (PDCPD) were prepared by UV-induced simultaneously frontal polymerization in this paper. Compared with the net DGEBA cured polymer, the tensile strength, elongation at break and impact strength of the IPNs were simultaneously improved. The maximum tensile strength and elongation at break of the IPNs reached 100 MPa and 4.64%, respectively, and the maximum impact strength reached 7.34KJ/m 2 with an improvement of 115.2% over that of the net DGEBA cured polymer. Thermogravimetric analysis (TGA) results revealed that the IPNs could enhance the thermal stability. Data of the differential scanning calorimetry (DSC) and TGA testing shows that the IPN shows a single glass transition temperature ( T g ) which is between the T g of DGEBA and DCPD, indicating homogeneous phase and highly cross-linked IPN formed. Morphologies and molecular structure of the IPNs polymer were observed by scanning electron microscope (SEM) and characterized by Fourier transform infrared spectroscopy (FTIR), respectively, whose results also proved the formation of ideal IPNs structures.
研究领域:
材料科学
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高分子化学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xiaomei Liu,Jing Li,Pengbo Liu,Cailing Yang,Ziqiang Lei
Adsorbent-based atmospheric water collection technology has great potential in the field of alleviating the shortage of freshwater resources. Here, we prepared the MOF-based hygroscopic polymer material (MPAA) with atmospheric water harvesting and liquid water storage by using MOF-801 with a double copolymerization bond and a three-dimensional structure as a functional monomer and copolymerized with acrylic acid (AA). The atmospheric water-holding properties of the materials at different humidity gradients (50%–90% RH) and their desorption properties under simulated daylight conditions were evaluated. The adsorption of water vapor by MPAA was 628.8 mg/g at the test time of 8 h, which was significantly higher than that of PAA. The field experiment indicated the material's potential to reduce evaporation of soil water, which could potentially be used to store liquid water. This strategy provides new insights into the design of functional materials for atmospheric water harvesting in arid areas and ecological restoration.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Yancheng Yan,Zeyu Xue,Lianci Wu,Yumei Luo,Xiaodong Bai
In the process of oil and gas production, the failure of drilling fluid caused it to invade the formation, leading to wellbore instability. N-isopropylacrylamide (NIPAM), acrylamide (AM), and sodium p-styrene sulfonate (SSS) were used as raw materials, and the P(NIPAM/AM/SSS) (abbreviated as NAS) temperature-sensitive plugging agent was synthesized by inverse emulsion polymerization. The optimum synthesis conditions were obtained using a redox initiation system. Infrared measurements and UV–visible analysis showed that the target product was successfully prepared, and NAS exhibited a lower critical solution temperature (LCST) of 55°C, with sensitive temperature-responsive behavior. Rheological and filtration tests, along with high-temperature and high-pressure (HTHP) sand tray tests, demonstrated that the temperature-sensitive plugging agent effectively plugged the formation. Particle size analysis and Zeta potential analysis indicated that the addition of the temperature-sensitive plugging agent increased the electrostatic stability of bentonite-based slurry and polymer. Contact angle measurements and micro-morphology of the mud cake revealed that a hydrophilic-hydrophobic transition occurred at high temperatures in NAS, forming a dense hydrophobic film on the surface of the mud cake. This film effectively sealed cracks and micropores, reduced the invasion of free water, and improved wellbore stability.
研究领域:
石油工程
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高分子化学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
·
IF 2.8
Qing Tan,Chen Mao,Xiaochang Hao,Ye Tao,Xinghou Gong
To address the challenges of high brittleness and poor crystallization capability in polylactic acid (PLA), glass fiber (GF), and polycaprolactone (PCL) were selected as reinforcing and toughening agents, respectively, for property modification. In the resulting composites, an interfacial layer forms between the polymer matrix and GF, significantly influencing the interfacial adhesion quality and the overall mechanical properties of the material. To enhance interfacial compatibility, oleic acid (OA) was introduced as a coating via the hydrophilic Si O Si bonds on the GF surface. Combined with treatment using a silane coupling agent (KH550), this process resulted in dual-surface modification of glass fiber (OKGF). PLA/PCL/GF (or OKGF) composites with mass fractions of 5%, 10%, 15%, and 20% OKGF were fabricated using solution dissolution and melt blending techniques. Scanning electron microscopy analysis revealed excellent interfacial adhesion between OKGF and the polymer matrix. The composite with 15% OKGF content exhibited optimal mechanical properties, achieving maximum tensile strength (65.5 MPa) and modulus (1113.0 MPa), representing a significant enhancement. Moreover, OKGF served as an effective heterogeneous nucleating agent, resulting in a crystallinity of 19.1% at 15% OKGF content—an 88% increase compared with the PLA/PCL blend (10.2%).
研究领域:
材料科学
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高分子化学
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
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IF 2.7
Xuhui Wang,Guojie Zhang,Huanhuan Dong,Yong Zhang
Maltitol, a natural compound, offers a potentially eco-friendly alternative to conventional auxiliary thermal stabilizers. Its auxiliary stabilization effect was studied by discoloration tests, Congo red tests, thermogravimetric analysis, and UV–visible spectroscopy. Additionally, x-ray photoelectron spectroscopy and discoloration tests were used to study the stabilizing mechanisms of maltitol. Compared to dipentaerythritol, commonly used in the PVC industry, maltitol as an auxiliary stabilizer exhibits better improvement in thermal stability. This improvement is related to its melting point, ability to complex with zinc chloride, and content of hydroxyl groups. Furthermore, the addition of maltitol in PVC not only maintains good transparency of PVC basically unchanged but also improves the mechanical properties. Maltitol, as a natural, eco-friendly, and efficient auxiliary thermal stabilizer, exhibits a promising application prospect in PVC materials.
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
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 48
·e56281
·
IF 2.7
Yanna Zhao,Yingying Zhang,Xiaowei Bai,Yuqi Wang,Yiqing Li,Shuai Yang
Polyimide materials with high mechanical strength are widely used in various fields, but pose certain challenges in achieving sustainable material utilization. A poly(imide-imide) vitrimer material (ADTA) based on multiple dynamic covalent bonds (imide, imine, and disulfide bonds) was constructed by preparing vanillin difunctionalized derivatives (DVA) for aldolamine condensation reactions with bis-amine monomers (ATFA) and tris(2-aminoethyl) amines (TAEA) with imide structures. The ADTA material has good 5% thermal stability T d 5% (278.87°C), high energy storage modulus E (2421.26 MPa), and fast relaxation time (36.39 s). The thermal stability and mechanical properties of the material are enhanced by the more stable alicyclic structure of the imide structure. The material also demonstrated excellent solvent resistance and self-healing properties. This study provides a new option for the development of sustainable utilization of polyimide materials.
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
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.
研究领域:
材料科学
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航空航天工程
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能源存储技术
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 45
·e56214
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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.
研究领域:
材料科学
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高分子化学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 31
·e55721
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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.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 38
·e55959
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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.
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
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