JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Zhang Chenyuan,Liu Zhiqiang,Zhang Zhijia,Zhou Wenjun,Zhang Songsong,Wang Guojun,Wang Qiang,Ma Teng,Wang Lin,Wei Hao
Self-healing research based on commercial polymeric materials (such as polyurethane) is beneficial to sustainable development by prolonging the life of materials. However, developing polymeric materials that integrate robust mechanical properties with self-healing ability at ambient temperature remains a formidable challenge. The formation of polymeric materials by physically and chemically dual crosslinking structures is a powerful method to improve mechanical properties. Herein, a series of dual crosslinking self-healing polyurethane have been designed and successfully synthesized by incorporating 2-ureido-4[1H]-pyrimidinone (UPy) units and triethanolamine (TEOA) into the polymer networks. Relying on the reinforcement of chemical crosslinking which is induced by TEOA, the resulting polyurethane exhibited robust strength of 10.3 MPa and elongation at break of 569.4%, which are quite prominent compared with previous reports. At the same time, the recombination of hydrogen bonds makes the polyurethane with UPy structure achieve rapid self-healing after 24 h at 40°C and the strength recovered to 4.98 MPa. This work provided a novel way to fabricate sustainable polyurethane with robust mechanical properties.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 26
·e55566
·
IF 2.7
Lingzhi Wang,Hua Liu,Haojie Wang,Birong Zeng,Xiaohui Liu,Yiting Xu,Weiang Luo,Guorong Chen,Conghui Yuan,Lizong Dai
Carbon dots (CDs) are a novel class of carbon material which have gained widespread usages owing to their exceptional optical properties, low toxicity, and high biocompatibility. The nitrogen-doped carbon dots (N-CDs) using a normal curing agent of 4,4′-diaminodiphenylmethane as resource was expected to not only have good compatibility with epoxy resin (EP), but also bring luminescent property to EP composites. It was interesting that the N-CDs-EP composites with 12.5 wt% addition exhibited a limiting oxygen index value of 31.4% and reached UL-94 V-1 grade, indicating a good flame retardancy. Compared with pure EP, the incorporation of N-CDs formed more residual char and had extra smoke suppression effect. Besides, the N-CDs-EP composites exhibited a low transmittance less than 10% for the light wavelength below 490 nm. The N-CDs contributed to the light shielding capabilities of the N-CDs-EP composites, which could effectively shield purple, blue, and cyan light. Furthermore, the mechanical properties including bending strength and impact strength, the dielectric property, and hydrophobicity of N-CDs-EP composites were also improved. The simple but effective modification strategy might be expected to be applied in many polymer systems.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xiaowei Tan,Ziyi Liu,Cuiling Ouyang,Minxin Deng,Jingyi Xiao,Shufen Xiao,Tuo Huang,Siyu Yu,Hezhang Chen,Hui Chu,Jian Chen
Chitosan (CS)-based drug delivery systems often face challenges in obtaining clinical approval. Enhancing the binding affinity of CS-based carriers to target cells, such as tumor cells, is crucial for their translation from bench to bedside. Strategies like crosslinking (NHS-disulfide-NHS) and utilizing materials like albumin have proven effective in strengthening interactions between CS-based nanoparticles and tumor cells, thereby enhancing cellular uptake (cellular avidity). This study presents a novel approach using crosslinked CS nanoparticles loaded with doxorubicin, featuring reduction-responsive drug release and albumin coating. The albumin-coated crosslinked chitosan (ACCC) was assembled via reaction between amino of CS/albumin and NHS-disulfide-NHS. The resulting ACCC nanoparticle micelles demonstrate enhanced stability of the micelles. The hybrid crosslinked network ensures stability while providing ample space for drug loading and achieves reduction-responsive drug release through disulfide bond crosslinking. Moreover, the proposed system possesses excellent biocompatibility. Compared to uncoated crosslinked chitosan nanoparticle micelles, ACCC nanoparticle micelles exhibit potent cytotoxicity against tumor cells, particularly in reducing environment. Fluorescence imaging and flow cytometry analyses confirm the enhanced cellular affinity conferred by albumin coating. These findings underscore the potential of ACCC nanoparticles in improving tumor cell adhesion and anti-tumor efficacy, thus offering promising prospects for translational medicine in CS-based drug delivery.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 24
·e55511
·
IF 2.7
Shuxin Zheng,Yuxiang Nie,Zhangzhong Wang,Xin Feng,Jiahua Zhu,Xiaohua Lu,Liwen Mu
This work presents a design of a unique “roller wheel” structure combining rigid MXene and flexible liquid metal (LM), aiming to construct an epoxy composite coating with simultaneous advanced mechanical strength and lubrication properties. The antiwear property of the epoxy composites is improved by 72.8% when the LM is 0.5 wt% and MXene is 0.03 wt%. The incorporation of LM-MXene improved the mechanical properties of the epoxy composite coating, resulting in an approximately 136.6% increase in elastic modulus. The unique “roller wheel” structure provides additional mechanical support and leads to lower adhesion between the MXene layers and LM. As a result, LM reduces the stripping and sliding of the interface between MXene layers during the friction process, further enhancing the lubrication performance of the epoxy composite coating.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Gaoru Chen,Haowei Lu,Chuanjie Lin,Xiaogan Zheng,Chunmin Jiang,Wenlong Yang
The Cu@crosslinked polystyrene (Cu@cPS) core-shell nanoparticle was designed, and we found it is an effective way to suppress the formation of conductive networks, prevent oxidation of Cu nanoparticle, enhance compatibility with polymer matrix, and improve dispersity. Compared with the Cu nanoparticle, the outstanding performance of Cu@cPS can endow the nanocomposite films with excellent dielectric properties. When the temperature is 90°C, 20 vol% Cu@cPS/PVDF nanocomposite film ( ε r = 5998, tan δ = 0.49, at 100 Hz) possesses a higher relative dielectric constant ( ε r ) and a lower loss tangent (tan δ ) than 20 vol% Cu/PVDF nanocomposite film ( ε r = 445, tan δ = 1.08, at 100 Hz). The calculated conductivity activation energy ( E A ) proved that the Cu@cPS core/shell structure can effectively restrain charges spreading behavior. This novel inorganic@cPS core-shell nanoparticle not only opens a new avenue to fabricate high-performance dielectric nanocomposite but also is of great significance for the preparation of inorganic/polymer nanocomposites with excellent dispersity.
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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
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Tao Lin,Ke Shang,Gui-De Lin,Jin-Jun Yang,Jun-Sheng Wang
The flame-retardant silicone rubber foam (SRF) composites were prepared by adding a low loading of expandable graphite modified with γ-(2,3-epoxypropoxy)propytrimethoxysilane (EG@KH560). The EG@KH560 was characterized by Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Meanwhile, the effects of EG@KH560 on the micromorphology, flame retardancy, mechanical properties, thermal stability, and combustion behavior of SRF/EG@KH560 composites were investigated. The results show that the compatibility between EG@KH560 and the SRF substrate was significantly improved, thereby reducing the deterioration of tensile and compressive strength in the composites. The composite containing only 2 parts EG@KH560 per hundred parts of the base polymer (2 phr) exhibited excellent flame-retardant performance, which can pass the FV-0 rating during the vertical combustion test with a high limiting oxygen index (LOI) value of 31.2. The thermal stability of the composite was also enhanced, as evidenced by a notable increase in the maximum thermal decomposition temperature and the residues at 900°C. Moreover, the total heat release and total smoke release of SRF containing 2 phr EG@KH560 were reduced by 13.1% and 61.0% compared with pure SRF in the cone calorimetry test, indicating a significant improvement in fire safety for the composite with the addition of EG@KH560.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 13
·e55146
·
IF 2.7
Qin Liu,Lan Xu
In this study, the gold nanoparticles (Au NPs) are capped with a novel, well-defined double hydrophilic block copolymer, poly (ethylene glycols)-block-poly(mono-2-(methacryloyloxy) ethyl succinate) (PEG-b-PSEMA). The PEG-b-PSEMA, with long side chains and relatively narrow dispersity index, is successfully prepared by aqueous electrochemically mediated atom transfer radical polymerization using a PEG-Br macroinitiator (M n ≈2000 g mol −1 ). By simply mixing PEG-b-PSEMA and Au precursor before adding reductants, coulombic interactions occur between the Au precursor and the carboxylate group of the PSEMA, as a result dense Au NPs are formed. This enables the Au NPs to remain dispersed even in the presence of temperature variations, pH adjustments, and incubation in organic solvents. Au NPs were endowed by PEG-b-PSEMA with more remarkable catalytic activity in organic solvents of 4-nitrophenol into 4-aminophenol than by sodium citrate (Au@citrate) and MeO-PEG-OH (Au@PEG). In addition, PEG-b-PSEMA-stabilized Au NPs (Au@PEG-b-PSEMA) were also tested for the dye degradation property against Rhodamine-B in only pH 10 basic solution, and over 99% of dye degradation can be achieved in 9 min. PEG-b-PSEMA induces coulombic interactions with Au NPs, providing outstanding stability for catalytic applications in organic or specific acidic-base environments.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 14
·e55196
·
IF 2.7
Jin Wang,Xiaoyue Shen,Mengwei Jiang,Fang Zhou,Yupeng Zhang
Diatomite (DIA) particles are commonly employed as flame-retardant additives for polymers, yet their intrinsic inefficiency requires substantial quantities for optimal efficacy. To address this issue, we proposed a novel approach involving the microencapsulation of DIA with polyethylene glycol phosphate (PEGP) to enhance the flame retardancy of epoxy resin (EP). Characterization of the prepared DIA@PEGP utilized scanning electron microscopy with energy-dispersive x-ray spectrometry and Fourier transform infrared spectroscopy. The resulting EP composite, DIA@PEGP-4/EP, achieved a limiting oxygen index of 33.2% and achieved a V-0 level in vertical combustion tests. Compared to EP, DIA@PEGP-4/EP demonstrated significantly improved fire performance, with 38.6%, 47.8%, 25.0%, 41.3%, and 60.4% reduction in peak heat release rate, total heat release, peak smoke production rate, total smoke production, and CO yield. Furthermore, the highest FPI value of 0.080 m 2 ·s/kW for DIA@PEGP-1/EP and the lowest FGI value of 8.734 kW/m 2 ·s for DIA@PEGP-4/EP, indicate that the incorporation of DIA@PEGP into EP enhances its fire safety. The flame retardancy mechanism of DIA@PEGP-4 involves the formation of a phosphorus-containing aromatic carbon layer during EP char formation, capturing radicals in the gas phase during combustion.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Xiying Wang,Beili Pang,Lingyi Kong,Yongqi Zhu,Changzhao Chen,Hongzhou Dong,Liyan Yu,Lifeng Dong
Polyethylene oxide (PEO)-based polymers are commonly used in solid-state lithium-ion batteries, though their high crystallinity at room temperature reduces ionic conductivity. In this research, zeolitic imidazolate framework-67 (ZIF-67), with its regular dodecahedral structure, large surface area, and numerous nanoscopic pores, is synthesized and uniformly dispersed into a PEO matrix to create a novel composite polymer electrolyte (CPE). ZIF-67 effectively reduces PEO crystallinity and enhances the mechanical properties of the electrolyte by disrupting the order structure of the PEO polymer chains. The resulting CPE achieves an ion conductivity of 6.50 × 10 −4 S cm −1 , and demonstrated high interfacial compatibility and stability with optimized ZIF-67 content. Furthermore, the LiCoO 2 /CPE/Li battery exhibits good cycle stability at 0.1 C, with discharge capacities of 130.81, 125.31, and 112.25 mAh/g at 0.1, 0.2, and 0.5 C. Therefore, ZIF-67 presents a promising strategy for enhancing battery performance and developing high-performance 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
Wu Yang,Wenhao Liu,Mengze Zheng,Cong Zhu,Tianqi Li,Yunjun Luo
A polyol bonding agent (BA) was utilized to enhance the mechanical properties of propellant with low aluminum content. Through scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS) analysis, it was discovered that BA can physically bond to the surfaces of ammonium perchlorate (AP) and hexogen (RDX). The results of mechanical testing showed that the use of BA can significantly improve the mechanical properties of propellants. Specifically, as the amount of BA increases, the maximum tensile strength ( σ m ) of the propellant also increases, the fracture elongation ( ε b ) initially increases and then decreases, the “dewetting ratio” continuously decreases, and the creep resistance of the propellant also increases. At a BA content of 0.2%, the σ m of the propellant reaches 0.6 MPa, the ε b exceeds 50%, and the “dewetting ratio” is less than 1.1.
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高影响因子
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