JOURNAL OF APPLIED POLYMER SCIENCE
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2024
·
IF 2.7
Yuanhang Song,Tao Wang,Jingxian Zhang,Yanhui Li,Junru Li,Chuanwei Zhang,Pengfei Zhang
This study explores the ion transport properties of self-microporous polymers by introducing a novel combination of carboxylated PIM-1 with sulfonated graphene oxide (SGO) to fabricate membranes. The resulting membranes exhibit enhanced structural stability, hydrophilicity, and ion exchange capacity (IEC) compared with the original carboxylated PIM-1 (CPIM-1), while preserving the subnanoporous structure. However, it was observed that excessive SGO loading leads to a detrimental “blocking effect” that compromises various membrane properties. Through electrically driven ion transport tests in a 0.01 M NaCl solution, it is demonstrated that a moderate amount of SGO effectively enhances membrane conductivity from 46.96 μS m −1 (for carboxylated PIM-1 membranes without SGO) to 56.55 μS m −1 . Additionally, the membranes exhibit selective sieving of cations and anions. The presence of small-sized ion channels and the electrostatic repulsion generated by the abundant carboxyl and sulfonic acid groups significantly hinder Cl − transport. Consequently, the Na + /Cl − migration ratio (t + /t − ) reaches 98 at a concentration ratio of 10:1 on both sides of the membrane, surpassing the value of 3.74 observed for the pure CPIM-1 membrane. This investigation provides valuable insights for the practical application of easily prepared, processable, and cost-effective hydrophilic self-contained microporous polymer membranes in ion transport applications.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Kunyan Wang,Yibo Gao,Zuocheng Zhang,Zhou Fang,Yuhua Guo,Peisong Tang,Guoxiang Pan
In this work, a synergistic effect strategy was explored for fabricating hydrophobicity, phosphorus- and nitrogen-containing layered double hydroxides nanosheets (LDHs) based flame retardant (LDHs-K@DM). This fabricating process was achieved by amination of the surface of LDHs and, subsequently, interfacial self-assembly with high P content of diethylenetriaminpenta (methylene-phosphonic acid) (DTPMP) and high N content of melamine (MEL). The chemical construction and thermal stabilization properties of LDHs-K@DM were confirmed via different characterization approaches. The results revealed that LDHs-K@DM was successfully prepared and the surface of LDHs-K@DM was transformed into hydrophobicity with high water contact angle. Moreover, LDHs-K@DM had better thermal stability. After that, LDHs-K@DM was molten compounded with biobased polylactic acid (PLA). It was suggested that LDHs-K@DM were uniformly dispersed in the PLA matrix and could accelerate the decomposition of PLA to form char residues. Most importantly, the addition of 20 wt% LDHs-K@DM into PLA can endow the composite to achieve a desirable UL-94 V-0 rating and the limiting oxygen index value of 30.9%. Finally, the synergistic effect flame retardant mechanism of LDHs-K@DM was comprehensively analyzed. This synergistic decorating strategy for preparing LDHs-K@DM flame retardant is promising for industrial production.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yaling Deng,Lei Nie,Yu Xu,Chenhong Gao,Zhe Wu
The development of highly effective bio-lubricant coatings for arthritis treatment is extremely demanded. Herein, inspired by the efficient lubrication of articular cartilage, acrylic acid (AA) with (3-(methacryloylamino) propyl) dimethyl (3-sulfopropyl) ammonium hydroxide (MPDSAH) hydrogel coatings containing nanoparticles on Ti6Al4V substrate were designed and fabricated via UV grafting technology. SiO 2 and SiO 2 grafted with PAA polymer brushes (SiO 2 -g-PAA) were separately doped into the PAA-PMPDSAH hydrogel. The PAA-PMPDSAH/SiO 2 -g-PAA exhibits good tensile and compressive properties compared with PAA-PMPDSAH/SiO 2 hydrogel, with an enhancement of 183.4% in tensile modulus and 60.8% in compressive modulus. The PAA-PMPDSAH/SiO 2 -g-PAA hydrogel coatings exhibit a low wear volume, 2.9 ± 0.16 × 10 6 μm 3 , representing a decline of 32.1% and 61.3% compared with the PAA-PMPDSAH and PAA-PMPDSAH/SiO 2 hydrogel coatings, respectively. The antiwear performance has obviously improved. The hydrophilic PAA polymer brushes prevent the agglomeration of nanoparticles and promote homogeneously dispersion within the hydrogel. The three-dimensional crosslinked network structure of hydrogel effectively protects the structural integrity of the polymer brushes, thereby facilitating enduring lubrication properties. This work provides a strategy for promising artificial joint lubrication in biomedical fields.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Gang Li,Yayun Li,Chuanxi Lin,Hao Peng,Yunsheng Xue,Wenfeng Qin,Xin Zhao,Bin Zhou
2024 aluminum alloy has high strength, processing performance, and good damage tolerance performance, but it is prone to intergranular corrosion and pitting. Therefore, the development of corrosion protective coatings is essential for the aluminum alloy. In this paper, cerium ion (Ce 3+ ) was doped into chitosan-modified montmorillonite (Ce-CS-MMT) by ion exchange method, and the corrosion protective performance of Ce-CS-MMT epoxy coating (Ce-CS-MMT/EP) was investigated. The electrochemical analysis of aluminum alloy in cerium-containing solution showed the corrosion inhibition efficiency reached 95.52%. The result indicates the corrosion inhibition effect of cerium-containing solution was better than pure NaCl solution and MMT solution. The corrosion study of the coating illustrates that the protection rate of Ce-CS-MMT/EP reached 95.82%, which was higher than that 91.83% of Ce-MMT/EP. The result indicates the resistance of charge transfer was greater and the better shielding effect for electrolyte corrosion ions than MMT and Ce-MMT epoxy coatings, and the corrosion protective performance was excellent.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 2
·e56340
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IF 2.7
Xiaohui Nan,Jiaqing Xie,Yang Gao,Xu Zhang,Xiaofei Lou,Fuwei Wang
Flexible pressure sensors with high sensitivity and a wide detection range must be developed for practical applications. In this study, a dual-active-layer flexible piezoresistive sensor was developed. A reduced graphene oxide film with wrinkled microstructures was prepared by a simple and low-cost substrate pre-stretching method and used as the first active layer. A thermoplastic polyurethane electrospun fiber membrane was modified by fast polydopamine coating and ultrasonication with multi-walled carbon nanotubes and used as the second active layer. Owing to the continuously changing conductive pathways created by the wrinkled microstructures and fiber network under pressure deformation, the sensor achieved a detection range of 0–100 kPa, with sensitivities of 8.5, 1.35, and 0.39 kPa −1 in the ranges of 0–1, 1–20, and 20–100 kPa, respectively. Additionally, the sensor exhibited a low detection limit (2 Pa), response and recovery times of 105 and 85 ms, respectively, and reliable service performance over 10,000 loading/unloading cycles. The sensor enabled real-time monitoring of finger and wrist bending, beaker-holding, and fingertip-sliding on a touch screen, demonstrating its feasible applications in wearable electronics and human–machine interface devices.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Liangyun Yu,Jiajun Li,Jingjing Zhang,Xue Chen,Meng Yuan,Qi Zhang,Baocai Xu,Zhiliang Yao,Qin Xu
The accurate measurement of nitrophenols (NPs) in fine particulate matter (PM 2.5 ) is critical because NPs are identified as the main constituents of brown carbon in PM 2.5 , which influence the global radiative forcing and regional climate. Herein, we presented a specific and ultrasensitive photoelectrochemical (PEC) sensor (MIPs/Bi 2 WO 6 @GH/ITO) for 4-nitrophenol (4NP) detection by electrodepositing molecularly imprinted polymers (MIPs) polypyrrole on indium tin oxide coated glass (ITO) electrode modified with dual 3D structural Bi 2 WO 6 @graphene hydrogel (GH) composites. The composites were successfully synthesized through the simple one-step hydrothermal method with 3D flower-like Bi 2 WO 6 efficiently distributed on the 3D porous networks of GH. Under optimum conditions, the PEC sensor exhibited a wide linear range of 5.0 × 10 −12 –1.0 × 10 −7 M for 4NP with a low detection limit of 5.78 × 10 −13 M. MIPs/Bi 2 WO 6 @GH/ITO was further successfully applied for 4NP assay in PM 2.5 . The results indicated that the developed PEC sensor had broad applications for NPs detection in the environmental fields.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·Vol. 142
·期 13
·e56670
·
IF 2.8
Teng Wang,Wenhao Liu,Cong Zhu,Tianqi Li,Yunjun Luo
Energetic adhesives with excellent mechanical properties are of great significance for the development of solid propellant. In this paper, a small amount of graphene is used to enhance the mechanical properties of glycidyl azide polymer (GAP)-based energetic thermoplastic elastomer (GAP-ETPE), and an in-depth analysis of the graphene enhancement mechanism is conducted through the structural characterization of the composite elastomer. Scanning electron microscopy (SEM) reveals that the solvent-assisted ultrasonic dispersion method can fully disperse graphene in GAP-ETPE, taking advantage of its high specific surface area. Fourier Transform Infrared (FT-IR) and low-field Nuclear Magnetic Resonance (LF-NMR) analysis show that graphene can provide physical crosslinking sites, significantly increasing the crosslinking density of GAP-ETPE. Dynamic mechanical analysis (DMA) indicates that the increased crosslinking density caused by graphene will restrict the segmental motion of GAP-ETPE. Static tensile test result shows that the use of 0.1 wt% graphene can increase the tensile strength of GAP-ETPE from 7.0 to 7.8 MPa. This work provides a basis for the application of graphene in energetic adhesives.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Xu Han,Zhijian Pan,Le Chang,Yumei Ji,Zeqian Wang,Feng Liu
The degree of microphase separation plays a vital role in one-component polysulfide adhesives determining their mechanical properties and thermal stability. However, the degree of microphase separation was mainly determined by the hard segment content and molecular weight of liquid polysulfide. In this work, we successfully prepared a series of one-component polysulfide adhesives with 30 wt%–50 wt% hard segment content by using 4,4-diphenylmethane diisocyanate (MDI), different molecular weights (1000, 2500, and 4000 g/mol) of liquid polysulfides (JLY-121/1225/124) and 1,4-butanedithiol (BSO), and systematically investigated the relationship between microphase separation and material's properties. The results revealed that higher hard segment content and larger molecular weight of liquid polysulfide contributed to forming a higher degree of microphase separation, respectively. Among them, the optimal mechanical properties and thermal stability were obtained at 40 wt% hard segment content when JLY-1225 (2500 g/mol) was used. After immersion in the oil and water for 21 days, the tensile strength of C 40 -1225 could still reach 16.99 ± 0.80 and 14.87 ± 0.30 MPa, with a tensile strength retention rate of 75.75% (oil) and 66.30% (water), confirming that one-component polysulfide adhesives had good solvent resistance.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 5
·e56431
·
IF 2.7
Luo Luo,Yi Wang,Tianxiang Lv,Shuni Ying,Chunhua Zhou,Xiaodong Zhou,Huihuang Ma
Due to the difficulty in infusing resin into interiors of fiber bundles by prevalent pre-impregnation methods like melt impregnation and the substantial polarity difference between glass fibers (GF) and polypropylene (PP), the application of continuous glass fiber reinforced polypropylene (CGF/PP) composites has been restricted. In this study, a hybrid emulsion is prepared to address the polarity difference through coating process. And further by optimizing coating process parameters, composites glass fibers with excellent performance can be obtained. The study demonstrates that the composite glass fiber with coating amount of 15.34% exhibits good bunching and flexibility. The monofilament tensile strength and interfacial shear strength (IFSS) are increased by 2.53% and 109.74%, respectively compared to the desized glass fiber (GF0). Furthermore, after the hot-pressing process, the composites glass fiber bundles show fully filled gaps and a completely wrapped surface. This study lays the foundation for producing CGF/PP prepreg composites conveniently, efficiently, and commercially.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Man Liu,Tong Song,Xuan Wu,Qian Li,Shiwei Wang
In this paper, the foamed polylactic acid (PLA) composites with different ratios of titanium dioxide (TiO 2 ) and lignin (Lg) are prepared. Molecular dynamics simulation analysis indicates that the fillers enhance the mechanical properties of the composites. The optimal foaming temperatures for PLA/Lg and PLA/TiO 2 composites are found to be 110 and 100°C, respectively. The supercritical carbon dioxide foaming process is applied to get the foamed composites, and their mechanical and thermal properties are analyzed. The results show that the addition of TiO 2 improves the melting point and compression properties of the PLA composites. Furthermore, the inclusion of Lg increases the molecular chain mobility, foaming multiplicity, and compression strength of the composite materials.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 36
·e55923
·
IF 2.7
Wenxuan Zheng,Guoliang Zhang,Jian Qi,Shichao Lu,Yang Li
The functional group in the molecular chain of lubricants is a key factor for a boundary lubricating film, which can further enhance the friction performance by interfacial tribochemistry. In this paper, the tribological behavior of epoxy/graphene (EP/Gra) composites was investigated through varying lubrication conditions, including dry friction, or different lubricants (such as water, hexadecane, oleylamine, and oleic acid). The porosity and Shore hardness (SHD) of the EP composites were significantly improved by the addition of graphene. Results showed that the porosity of the EP/0.75 wt.% Gra composites was reduced by 75.6% and their SHD increased by 5.4 compared with the EP/0.05 wt.% Gra composites. The average coefficient of friction (COF) of the composites was reduced by at least 27.3% under dry friction conditions. For water as lubricant, the EP/0.5 wt.% Gra composite exhibited the lowest COF (0.0455). The EP/0.75 wt.% Gra composite displayed the lowest COF (0.0466) when hexadecane acted as lubricant. By contrast, EP/0.05 wt.% Gra showed the lowest COF (0.0389) with oleylamine as lubricant, and the EP/0.25 wt.% Gra composites gave the lowest COF (0.0433) under oleic acid. The amine group of oleylamine reacted with the EP group to form a hydroxyl group, resulting in a polymer with low friction adhered to the friction interface. Simultaneously, the EP group reacted with the carboxyl group, forming a network of hydrogen bonds with graphene, which reduced the shear stress on the friction interface. Therefore, the functional groups of lubricants have a vital influence on the tribological properties of frictional composites, which may provide a new approach to solving the problem of wear.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Wei Li,Linghao Wang,Menghao Lin,Li Chen,Xinjuan Zeng,Lichun Dong,Cailong Zhou
Mixed matrix membranes (MMMs) have emerged as a promising solution for the treatment of dye wastewater. A key challenge in advancing MMMs is how to effectively integrate two nanofillers with distinct advantages to mitigate the limitations of single-nanofiller systems. In this study, we present a binary nanofiller strategy, utilizing metal–organic frameworks (MOFs) and covalent organic frameworks (COFs), to fabricate polyvinylidene fluoride (PVDF) based MMMs. By systematically adjusting the mass ratio of ZIF-8 MOF and TFB-BD(Me) 2 COF, the separation efficiency of membranes for dyes with different charges, capitalizing on the molecular sieving properties of MOFs and the superior compatibility of COFs was evaluated. The optimized membrane demonstrated a rejection of 91.66% for Congo red (CR), along with a water permeance of 641.9 L m −2 h −1 bar −1 . This work represents a novel attempt in the design of binary-nanofiller MMMs, offering new insights into the synergistic effects of hybrid nanofillers in membrane technology.
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高影响因子
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