ACS Applied Polymer Materials
·
2026
·
IF 5.2
Zhang Xu,Liu Lijun,Zhang Lili,Li Xiaoyun,Li Huanting,Wang Junwei,Zhang Shouchun,Li Qifeng
The
inherent brittleness of the epoxy resin in carbon
fiber/epoxy
resin (CF/EP) laminates makes them prone to delamination, which severely
limits their structural reliability. Herein, a molecularly tailored
polyurethane/polyimide (PU/PI) copolymer film was proposed as an interleaf
to construct a gradient-modulus interphase for addressing this issue.
SEM and AFM results revealed that the introduction of PU significantly
improved compatibility with EP, as evidenced by the elimination of
the interface of the pure PI film. The film thickness was identified
as a critical parameter that governed the interpenetration behavior
between EP and PU/PI: insufficient thickness led to a steep modulus
mismatch and weak interfacial bonding, whereas excessive thickness
induced internal defects and interlaminar failure. Only at an optimal
thickness could a broad-gradient interpenetrating network be formed,
enabling a smooth modulus transition across the interlaminar region.
Mechanical test results showed that f-[PU/PI] 35 exhibited
improved performance. Compared with the untoughened CF/EP laminate,
the values of G IC-PROP and G IIC increased
by 100% and 221.3%, respectively. More importantly, the interlaminar
shear strength of f-[PU/PI] 35 also increased by 19.1%,
demonstrating a successful synergy between toughness and strength.
This work provides a paradigm for the design of high-performance composite
materials.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Li Xuefei,Jiang Pan,Wu Zumin,Yu Wei,Guo Zhiwei
The severe wear of friction pairs in water-lubricated bearings, resulting from lubricating film instability under boundary lubrication, has hindered their development and application. Enhancing surface wettability to improve interfacial adsorption capacity for water molecules and promote stable water film formation under harsh operating conditions represents an effective approach for ameliorating lubrication performance in water-lubricated bearings. Hydrophilic-modified Si 3 N 4 /polyurethane (PU) composite materials were fabricated utilizing Si 3 N 4 ceramic/PU composite material fabrication technology combined with PMPC and β-cyclodextrin surface grafting techniques. Surface characteristics, mechanical properties, and tribological performance were systematically evaluated, specifically elucidating the influence mechanisms of hydrophilic groups on wettability and lubrication behavior. Results demonstrate that distinct hydrophilic groups differentially affect composite material performance, with β-cyclodextrin exhibiting more pronounced effects. Compared to the control group, the contact angles of PMPC and β-cyclodextrin-modified composite materials were decreased by 5.69% and 10.53%, respectively. Surface-bound hydrophilic groups lowered water-lubricated friction coefficients and effectively suppressed friction-induced vibration. Superior enhancement of tribological properties was provided by β-cyclodextrin modification relative to PMPC, with optimal performance achieved at solution –OH concentrations of 0.6 mol/L. This work presents a viable strategy for mitigating tribological challenges in water-lubricated bearing materials operating under boundary lubrication state. Graphical abstract
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高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 35
·2302847
·
IF 29.4
Ju Bai,Wen Gu,Yuanyuan Bai,Yue Li,Lin Yang,Lei Fu,Shengzhao Li,Tie Li,Ting Zhang
Multifunctional selectivity and mechanical properties are always a focus of attention in the field of flexible sensors. In particular, the construction of biomimetic architecture for sensing materials can endow the fabricated sensors with intrinsic response features and extra-derived functions. Here, inspired by the asymmetric structural features of human skin, a novel tannic acid (TA)-modified MXene-polyurethane film with a bionic Janus architecture is proposed, which is prepared by gravity-driven self-assembly for the gradient dispersion of 2D TA@MXene nanosheets into a PU network. This obtained film reveals strong mechanical properties of a superior elongation at a break of 2056.67% and an ultimate tensile strength of 50.78 MPa with self-healing performance. Moreover, the Janus architecture can lead to a selective multifunctional response of flexible sensors to directional bending, pressure, and stretching. Combined with a machine learning module, the sensor is endowed with high recognition rates for force detection (96.1%). Meanwhile, direction identification in rescue operations and human movement monitoring can be realized by this sensor. This work offers essential research value and practical significance for the material structures, mechanical properties, and application platforms of flexible sensors.
研究领域:
材料科学
·
生物医学工程
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PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Yu Zhou,Ning Zhang,Xiang Zhou,Yubing Hu,Gazi Hao,Xiaodong Li,Wei Jiang
With the increase of oil spill accidents and discharge of oily wastewater, a novel oil adsorption material with superhydrophobicity and reusability is desired. To our knowledge, low surface energy and surface roughness are two key factors for superhydrophobic materials. Thus, a recyclable superhydrophobic PU@Fe3O4@PS sponge was fabricated through ultrasonic dip-coating and self-initiated photografting and photopolymerization (SIPGP) to attach Fe3O4 nanoparticles and polystyrene (PS) brushes onto the skeleton surface of the polyurethane (PU) sponge, constructing superhydrophobic micronano hierarchical surface. The preparation process was facile and simple, which was accomplished without initiator under simple UV irradiation. This as-prepared sponge selectively removed various oily contaminants from water with high adsorption capacity, and its magnetic property and elasticity endowed it with good reusability. When it was connected with a negative pressure system, continuous oil–water separation was achieved. Therefore, it is really a potential adsorbent for practical application in oil-polluted water treatment.
研究领域:
材料科学
·
环境科学
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PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Yanjie Zheng,Keli Wang,Lei Sun,Huili Shi,Xia Zhang
Superamphiphobic materials have a higher and broader application value compared to superhydrophobic materials. Nevertheless, durability has always been an obstacle to its practical application. Herein, we report a method that utilizes 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane (PFDTS) as an esterification reaction modifier agent for kaolin, and polyurethane as adhesive binding to substrates, so as to construct inorganic/polymer composite coatings , for obtaining a durability superamphiphobic material. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy characterization reveal that kaolin is successfully grafted by PFDTS. Thermogravimetry and differential scanning calorimetry tests exhibit that the material can withstand temperatures up to 400 °C. The self-cleaning test demonstrates that the as-prepared coating is repulsive to a variety of liquids such as water, milk, mud, olive oil, and n-hexadecane, which has a surface tension as low as 27.5 mN/m. It still maintains superamphiphobicity after the material is polished by sandpaper and the retention rate is above 96 % when the friction distance is about 4500 cm. After soaking in strong acid and strong base, it shows superior acid resistance and favorable alkali resistance. After aging durability irradiation for 300 min, it still retains superamphiphobicity. In addition, the biological contamination resistance tests indicate that it has a certain adhesion resistance to gram-positive bacteria Staphylococcus aureus and gram-negative bacteria Escherichia coli . Therefore, it is a promising kind of durable anti-fouling material for underground oil pipelines and construction.
研究领域:
材料科学
·
表面化学
·
聚合物科学
·
涂料与薄膜
·
生物医学工程
·
环境科学
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高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Changjiang Pan,Naiquan Yang,Jie Chen,Yan Ji,Linhong Deng,Qingping Xiong
As a versatile biomaterial, polyurethane (PU) finds extensive use in blood-contacting medical devices, including vascular grafts, central venous catheters, hemodialysis catheters, artificial heart valves, and blood oxygenators, etc. However, surface-induced thrombosis and difficulty in surface endothelialization after implantation are potential factors limiting their long-term use. In the present study, a lysozyme nanoparticle biomimetic coating (PTL) was first built on the PU surface based on the phase transition reaction of lysozyme. Subsequently, through sequential amidation reactions, heparin with anticoagulant performances and selenocystamine capable of catalyzing nitric oxide (NO) generation were immobilized onto the PTL surface, yielding a multifunctional nano-biomimetic coating with NO-generation and anticoagulant activities. The coating exhibited outstanding wettability, the ability to inhibit fibrinogen adsorption, and the capacity to catalyze NO generation from NO donors continuously. The as-prepared coating could reduce platelet adhesion, activation, and hemolysis, displaying superior anticoagulant performance. Meanwhile, the coating could promote endothelial cell (EC) proliferation and functional expression (vascular endothelial growth factor (VEGF) and NO) while significantly impeding smooth muscle cell (SMC) adhesion and proliferation, showing a good ability to facilitate endothelialization. Additionally, in the presence of NO donors, the coating could catalyze the NO liberation from donors continuously, further enhancing the blood compatibility and facilitating EC growth selectively. As a consequence, the strategy of this study can simultaneously impart PU with excellent hemocompatibility and rapid endothelialization, providing a new way for constructing anticoagulant and endothelium-promoting nano-biomimetic coatings on PU surfaces.
研究领域:
生物材料
·
纳米技术
·
生物医学工程
·
表面工程
·
血栓预防
·
组织工程
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高影响因子
Advanced Healthcare Materials
·
2024
·
IF 10
Yan Fang,Yanyan Zheng,Chongyi Chi,Sai Jiang,Wanbang Qin,Yicheng Zhang,Haiqing Liu,Qinhui Chen
Hydrogel is a very promising dressing for hemostasis and wound healing due to its good adhesion and long-term moist environment. However, secondary injury caused by tissue adhesion due to homogeneous hydrogel cannot be ignored. The obvious interface existing in Janus hydrogel will weaken its asymmetric function. Here, a hierarchical adhesive polyacrylic acid–polyurushiol water–oil Janus hydrogel (JPs@PAA-PU) without adhesive layer is fabricated by one-pot method in the stabilization of polystyrene@silica-siliver Janus particles (JPs). The morphological structure, mechanical properties, anisotropic chemical composition, and adhesion performance, in vivo, and in vitro hemostatic properties of Janus hydrogel are investigated. Result shows that the obtained Janus hydrogel possesses obvious compartmentalization in microstructure, functional groups, and chemical elements. Janus hydrogel is provided with asymmetric interfacial toughness with top 52.45 ± 2.29 Kpa and bottom 7.04 ± 0.88 Kpa on porcine liver. The adhesion properties of PAA side to tissue, red blood cells and platelets, promoting effect of PU side on coagulation cascade reaction and its physical battier endow Janus hydrogel with shorter hemostatic time and less blood loss than control group. It also exhibits excellent antibacterial effects against Escherichia coli and Staphylococcus aureus (>90%). Janus hydrogel possesses biosafety, providing safety guarantee for clinical applications in the future.
研究领域:
材料科学
·
生物医学工程
·
止血与伤口愈合
·
生物材料
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PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Sung-Jun Lee,Eunwon Choi,Ji-Young Choi,Chang-Lae Kim
This study presents the development of piezoresistive pressure sensors based on Ti 3 C 2 T x MXene-coated polyurethane (PU) sponges fabricated using Digital Light Processing (DLP) 3D printing. Six different porous structures were designed by varying the line width (300 and 500 μm) and height width (100, 300, and 500 μm) to optimize the sensor performance. The 500 × 300 μm structure demonstrated an optimal balance between sensitivity and measurement range, achieving resistance change rates from −11.02 % at 25 Pa to −163.78 % at 2.25 kPa. DLP 3D printing allows precise control of pore geometry with dimensional accuracy within 50 μm, while eliminating the complex multistep fabrication processes associated with traditional template methods. The sensor exhibited excellent durability, with less than 1.5 % performance variation after 1000 compression cycles at both 1 and 2 kPa values. Environmental stability tests revealed minimal interference from humidity (30–90 % RH) and predictable temperature-dependent behavior (20–90 °C). Cytotoxicity assessments using RAW 264.7 macrophages confirmed biocompatibility, with cell viability exceeding 95 % for both MAX/MXene materials and PU/MXene composites. Practical demonstrations, including finger pressing, palm contact, and dynamic tapping, validated the capability of the sensor for human motion detection. The combination of DLP 3D printing precision and MXene conductivity enables the scalable production of customizable pressure sensors for wearable electronics, health monitoring, and human–machine interface applications.
研究领域:
生物医学工程
·
柔性电子学
·
纳米材料科学
·
智能穿戴技术
·
人机交互
·
健康监测
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高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Yulu Zhu,Yujia Ding,Jianing Yang,Daoguang Han,Zheng Zhou,Meng Ma,Si Chen,Yanqin Shi,Huiwen He,Wei Wang,Xu Wang
The escalating production of plastic waste underscores an urgent need for sustainable polymer recycling. Polyurethane (PU) foam, representing over 50% of PU output, is particularly challenging to recycle due to its crosslinked structure. While chemical degradation can recover polyols, the hard segment residues (PUSR) remain underutilized. This study presents an innovative strategy for upcycling waste PU foam into a value-added flame retardant. Through a tailored chemical alcoholysis and phosphorylation process, PUSR was converted into a novel "three-in-one" flame retardant (P 1 D 1 ), integrating carbon, acid, and gas sources. When incorporated into soft polyvinyl chloride (PVC), P 1 D 1 endowed the composite with a UL-94 V-0 rating and a limiting oxygen index of 24.2%, significantly enhancing its flame retardancy. Remarkably, this improvement was achieved without compromising mechanical properties, as evidenced by a 42% increase in elongation at break. This work not only establishes a promising path for PUSR valorization but also provides a sustainable solution for developing high-performance flame-retardant polymers.
研究领域:
高分子化学
·
材料科学
·
环境工程
·
可持续发展
·
阻燃材料
·
塑料回收
·
绿色化学
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高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Shanshan Hu,Changhua Hu,Liyong Luo,Haotian Zhang,Sibo Zhao,Zhonghua Liu,Liang Zeng
Obesity is one of the circadian rhythm disorders (CRD)-mediated metabolic disorder syndromes. Pu-erh tea is a viable dietary intervention for CRD, however its effect on CRD-induced obesity is unclear. Here, we found that Pu-erh tea improved obesity in CRD-induced mice, which stemmed from the production of Cinnabarinic acid (CA). CA promoted adipose tissue lipolysis and thermogenic response ( HSL , ATGL , Pparα, CKB, UCP1) and increased adipocyte sensitivity to hormones and neurotransmitters by targeting the expression of adipose tissue receptor proteins (Q6KAT8, P51655, A2AKQ0, M0QWX7, Q6ZQ33, and mGluR4). This improved mitochondrial activity and facilitated adipose tissue metabolic processes, thereby accelerating glucolipid metabolism. Also, CA-induced alterations in gut microbes and short-chain fatty acids further improved CRD-mediated lipid accumulation. These results suggest that the increase of CA caused by Pu-erh tea, targeted to adipose tissue via the metabolite-blood circulation-adipose tissue axis, maybe a key mechanism for reducing the development of CRD-induced obesity.
研究领域:
营养学
·
代谢学
·
分子生物学
·
药理学
·
微生物学
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PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2025
·
IF 12.6
Leye Yan,Xinyan Hu,Jianan He,Hairun Gan,Yang Shi,Luting Li,Siyu Li,Kunpeng Wei,Jiaxing Wei,Jianxun Cai,Bing Li,Pengfei Pang
Atherosclerosis is a chronic inflammatory disease affecting arterial walls and remains a leading cause of morbidity and mortality worldwide. While anti-inflammatory therapy is widely recognized as a critical component in the management of atherosclerosis, current treatments are often limited by adverse effects and suboptimal efficacy. Membrane-derived nanovesicles have demonstrated excellent biocompatibility and prolonged circulation times, making them effective drug delivery carriers. However, their targeting capabilities remain limited, as only a small fraction of transmembrane proteins possesses intrinsic targeting functions. To overcome these limitations and leverage the targeting capability of folate in inflammatory disease, we designed biomimetic nanovesicles modified with folate by covalently conjugating folate-C 6 -PEG 4 -NHS to nanovesicles under physiological conditions enabling efficient drug delivery to atherosclerotic plaques. Meanwhile we also identified the PU.1 inhibitor DB1976 as an anti-inflammatory target for the treatment of atherosclerosis. Mechanistically, DB1976 suppresses inflammation by inhibiting the IL-1β/NF-κB signaling pathway, reducing reactive oxygen species (ROS) levels, and decreasing apoptosis rates. Folate-modified biomimetic nanovesicles loaded with DB1976 achieved promising therapeutic outcomes. In summary, folate-modified macrophage biomimetic nanovesicles loaded with a PU.1 inhibitor effectively alleviate atherosclerosis by targeting inflammation in atherosclerotic plaques, highlighting their potential as a promising therapeutic strategy for atherosclerosis treatment.
研究领域:
纳米医学
·
心血管疾病
·
炎症生物学
·
药物递送系统
·
分子药理学
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DOI
PubMed
高影响因子
JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 3.6
Jian-Wu Xiao,Li-Wang Jiang,Hao-Tai Deng,Zi-Kun Lin,Yong-Kang Mo,Shao-Xin Bei,Fu-An He,Jing-Shui Xu
In this work, in order to achieve the halogen-free magnetic superhydrophobic flame-retardant PU-based sponge for oil–water separation, the pure PU sponge was first coated with the flame-retardant alternate cationic poly(ethylene imine) (PEI) and anionic phytic acid (PA) layers using a self-assembly method, and then was further covered by the hydrophobic hexadecyltrimethoxysilane (HDTMS)-modified magnetic Fe 3 O 4 nanoparticles using the hydrophobic Sylgard 184 siloxane adhesive to form a series of H-Fe 3 O 4 /PU sponges. The structure of the resulting H-Fe 3 O 4 /PU sponges was studied by scanning electron microscope, energy-dispersive x-ray mapping, Fourier transform infrared spectroscope, wide-angle x-ray diffraction, x-ray photoelectron spectroscope, Raman spectroscope, and thermogravimetry analysis, confirming the existence of PEI, PA, HDTMS, Fe 3 O 4 nanoparticles, and Sylgard 184 siloxane adhesive on the PU sponge surface. The H-Fe 3 O 4 /PU sponge obtained through seven layers of self-assembly not only was superhydrophobic with the water contact angle of 153 o and magnetic with the magnetization strength of 7.9 emu/g at 50,000 Oe but also has the flame-retardancy characteristic. In addition, it was found that the oil–water separation could be realized by direct adsorption and gravity filtration using the H-Fe 3 O 4 /PU sponge, and the reusing of the H-Fe 3 O 4 /PU sponge for oil adsorption was stable due to its good mechanical property. Graphical Preparation process of halogen-free magnetic superhydrophobic flame-retardant H-Fe 3 O 4 /PU sponge.
研究领域:
材料科学
·
化学工程
·
环境科学
·
纳米技术
·
高分子科学
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高影响因子
危险品化学品经营许可证（带存储）