RSC Advances
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2017
·Vol. 7
·期 53
·33450-33458
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IF 3.108
Liu Liu,Fei Yan,Fangyuan Gai,Linghan Xiao,Lei Shang,Ming Li,Yuhui Ao
Polyetheretherketone (PEEK)/short carbon fiber (SCF)/polytetrafluoroethylene (PTFE)/graphene (GE) composites (PSPGE) with different weight fractions of GE were prepared successfully. The effect of GE on the tribological behavior of PEEK composites was investigated under different applied pressures, sliding speeds and temperatures. Characterization results revealed that the tribological performance was improved with the increase of GE loading, and 2.0 wt% GE filled PEEK/SCF/PTFE composites had the lowest friction coefficient and wear rate. The PSPGE exhibited excellent lubrication and wear resistance efficiency especially under harsh conditions. Moreover, the improved thermal conductivity of the PSPGE composites allowed friction heat to be transferred and further increased the wear resistance. Thus, this newly developed novel PSP2.0GE composite could be applied to many new fields as an advanced friction material.
研究领域:
材料科学
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机械工程
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高影响因子
Frontiers of Materials Science
·
2020
·Vol. 14
·期 2
·177-187
·
IF 1.747
Zhang Lan,Lin Zhaohua,Zhou Qiang,Ma Suqian,Liang Yunhong,Zhang Zhihui
Polylactic acid (PLA) is one of the most promising shape memory polymers with outstanding biocompatibility, while poly(ether ether ketone) (PEEK) is a special engineering plastic with excellent mechanical performance. In this work, PEEK was selected to modify PLA, and a series of PLA blended with different PEEK contents (PLA/PEEK blends) were obtained. The effects of PEEK on thermodynamic, mechanical and shape memory properties of PLA/PEEK blends were investigated. The results showed that the thermal stability of the PLA/PEEK blend was improved with the PEEK content increase. The tensile strength reached the highest value of 20.6 MPa when the PEEK content was 10%. While the best shape memory performance occurred with the PEEK content of 15%, the shape recovery time was less than 2 s, and the shape fixation/recovery ratio was more than 99%. Furthermore, the programmable mimetic flower opening process was achieved by using PLA/PEEK blends with different PEEK content ratios. The above results indicated that the blend of an appropriate proportion of PEEK had positive effects on mechanical and deformation performances of PLA.
研究领域:
材料科学
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生物医学工程
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Xinyi Liu,Yun Zhao,Zhiwei Ren,Yangkai Han,Tao Wei,Haitao Zhang,Jun Chi,Junling Ma,Zhigang Shao
Hydroxide exchange membrane water electrolysis (HEMWE) is garnering significant attention for large-scale green hydrogen production, owing to high operating current density and low capital cost. Hydroxide exchange membrane (HEM), a key component of the membrane electrode assembly (MEA), has been pursuing on improving its conductivity and dimensional stability for past several years. In this study, we develop a robust poly (ether-ether-ketone) (PEEK)-reinforced poly (aryl piperidinium) (TP-100) composite HEM (TP-100-PEEK) by a simple casting method. TP-100-PEEK shows excellent dimensional stability, good mechanical property and modest hydroxide conductivity. We also demonstrate a high-performance and durable HEMWE with the prepared TP-100-PEEK, achieving a high current density up to 3.5 A cm −2 at 2 V and over 1600 h long-term operation with a low decay rate of 51 μV h −1 at 1 A cm −2 . These results indicate that TP-100-PEEK has a significant potential for HEMWEs.
研究领域:
材料科学
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能源工程
·
化学工程
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Duo Sun,Shihui Yang,Shuwei Qiao,Zhuoran Wang,Xiao Han,Sihan Ma,Heyi Gong,Jinghui Zhao,Fei Yan
3D-printed polyetheretherketone (PEEK) scaffolds hold great promise for personalized bone repair owing to their excellent mechanical properties and highly tunable porous architectures. However, their intrinsic bioinertness severely limits osseointegration and long-term clinical efficacy. We have developed an innovative bioactive scaffold (SIM@MPSP) by engineering a multifunctional biointerface onto 3D-printed porous PEEK. The biointerface consists of a polydopamine-anchored bimetallic (MgCu) metal-organic framework (MOF) coating that enables efficient loading and sustained release of simvastatin (SIM), Mg 2+ , and Cu 2+ . The coordinated release of these agents creates a therapeutically conducive microenvironment that promotes osteogenesis and angiogenesis, while reprogramming macrophages from a pro-inflammatory M1 phenotype to a pro-regenerative M2 state through modulation of both canonical and non-canonical NF-κB pathways. This immune-regulatory process effectively mitigates inflammation and rescues inflammatory suppression of osteogenesis, thereby establishing a favorable osteoimmunomodulatory niche. SIM@MPSP demonstrated excellent biocompatibility, significantly attenuated foreign-body responses, and enabled robust bone regeneration in in vivo models. Mechanistically, the scaffold facilitates deep bone growth throughout its porous network and forms an interlocked interface with native bone, thereby achieving robust osseointegration. This study presents a powerful biointerface engineering strategy for converting bioinert PEEK into a bioinstructive platform capable of orchestrating coordinated osteogenic, angiogenic, and immunomodulatory responses, thus offering new opportunities for personalized treatment of complex bone defects.
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Materials Today Communications
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2025
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IF 4.5
Siyu Yan,Yuwei Cheng,Lei Li,Xiangpei Qin,Hao Xiong,Xinlei Gao,Li Wu
Concern for the environment is one of the main factors that are increasing the demand for superlubricity materials, this study aims to evaluate the lubrication performance of nano-silica modified PI and coating of polyetheretherketone (PI (NS)-PEEK) superlubricity material during the plane-plane contact process. A series of PI-PEEK materials modified by silica nanoparticles with different concentrations (0.05, 0.1, and 0.5 wt%) were synthesized and characterized by transmission electron microscopy (TEM), scanning electron microscope (SEM), white light interferometer, field emission scanning electron microscope (FESEM) and energy dispersive spectrometer (EDS). Friction tests were conducted under a load of 5 N for three hours to determine the optimal concentration based on anti-frictional properties. The PI-PEEK optimized with a 0.1 wt% concentration of SiO 2 further applied in the friction test at different velocities and different loads. Suggesting its potential as a superlubricity material. The results indicated superior antifriction performance at a NS concentration of 0.1 wt%, leading to the minimal average friction coefficients of 0.001221 (load of 5 N, velocity of 200 rpm), maintain superlubricity (ACOF=0.007528) under high loads (load of 95 N, velocity of 200 rpm), and maintain superlubricity (ACOF=0.007528) under high velocities (load of 5 N, velocity of 400 rpm). Additionally, the use of the nano-silica contributed to the formation of transfer film. SEM and white light interferometer characterization outcomes demonstrated that the worn surface of PI (NS)-PEEK exhibited a greater propensity to generate a smooth and continuous transfer film, compared to samples with a nano-free PI-PEEK. The EDS characterization results manifested that the transfer film consisted of three elements, viz. carbon (C), oxygen (O), and silicon (Si). These findings suggest that PI (NS)-PEEK could serve as an effective alternative to conventional bearing in future industrial bearing applications.
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E-POLYMERS
·
2022
·Vol. 22
·期 1
·763-774
·
IF 3.074
Huizhi Liu,Qilin Mei,Guomin Ding,Han Xiao,Shuhui Chen,Zhixiong Huang
The percolation thresholds of poly ether ether ketone/graphene (PEEK/Gr) composites in most studies are high due to the random distribution of Gr in the matrix. Here, aminated poly-ether-ether-ketone/graphene network (PEEK-NH 2 /GN) nanocomposites were prepared by electrostatic adsorption of PEEK-NH 2 with positive charges and graphene oxide with negative charges, followed by in -situ reduction and hot-pressing. The GN structure of composites was well presented in the images of scanning electron microscope. The PEEK-NH 2 /GN nanocomposites exhibited excellent electrical conductivity with a maximum conductivity of 0.0634 S·cm −1 and a percolation threshold as low as 0.25 vol%. In addition, the maximum tensile strength of nanocomposites was reached at 93 MPa when the Gr content was 0.5 wt%. We believe that this approach is a new avenue for the production of low filler high conductive polymer composites with potential commercial prospects in various fields.
研究领域:
材料科学
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化学工程
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高影响因子
Biomaterials Advances
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2023
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IF 0
Bowen Zhang,Junqing Leng,Zhicong Ouyang,Zijian Yang,Qing Zhang,Qingchu Li,Dichen Li,Huiyu Zhao
Polyetheretherketone (PEEK) has been widely used in the preparation of orthopedic implants due to its biological inertness and similar mechanical modulus to natural bone. However, the affinity between biological tissue (bone and soft tissue) and PEEK surface is weak, leading to low osseointegration and an increased risk of inflammation. The situation could be improved by modifying PEEK surface. Surfaces with good hydrophilicity and proper microtopography would promote cellular adhesion and proliferation. This work presented a two-step surface modification method to achieve the effect. Polyacrylic acid (PAA) chains were grafted on PEEK surface by UV irradiation. Then, ethylenediamine (EDA) was added to introduce amino groups and promote the cross-linking of PAA chains. Furthermore, a mathematical model was built to describe and regulate the surface topography growth process semi-quantitatively. The model fits experimental data quite well (adjusted R 2 = 0.779). Results showed that the modified PEEK surface obtained superhydrophilicity. It significantly improved the adhesion and proliferation of BMSCs and MFBs by activating the FAK pathway and Rho family GTPase. The cellular affinity performed better when the surface topography was in network structure with holes in about 25 μm depth and 20–50 μm diameter. Good hydrophilicity seems necessary for the FAK pathway activation, but simply improving surface hydrophilicity might not be enough for cellular affinity improvement. Surface topography at micron scale should be a more important cue. This simple surface modification method could be contributed to further study of cell-microtopography interaction and have potential applications in clinical PEEK orthopedic implants.
研究领域:
生物材料
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组织工程
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骨科
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细胞生物学
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DOI
PubMed
BIOMATERIALS
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2023
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IF 14
Miaomiao He,Hao Wang,Qiuyang Han,Xiuyuan Shi,Shuai He,Jiyu Sun,Zhuoli Zhu,Xueqi Gan,Yi Deng
Diabetic infectious microenvironment (DIME) frequently leads to a critical failure of osseointegration by virtue of its main peculiarities including typical hyperglycemia and pathogenic infection around implants. To address the plaguing issue, we devise a glucose-primed orthopedic implant composed of polyetheretherketone (PEEK), Cu-chelated metal-polyphenol network (hauberk coating) and glucose oxidase (GOx) for boosting diabetic osseointegration. Upon DIME, GOx on implants sostenuto consumes glucose to generate H 2 O 2 , and Cu liberated from hauberk coating catalyzes the H 2 O 2 to highly germicidal •OH, which massacres pathogenic bacteria through photo-augmented chemodynamic therapy. Intriguingly, the catalytic efficiency of the coating gets greatly improved with the turnover number (TON) of 0.284 s −1 . Moreover, the engineered implants exhibit satisfactory cytocompatibility and facilitate osteogenicity due to the presence of Cu and osteopromotive polydopamine coating. RNA-seq analysis reveals that the implants enable to combat infections and suppress pro-inflammatory phenotype (M1). Besides, in vivo evaluations utilizing infected diabetic rat bone defect models at week 4 and 8 authenticate that the engineered implants considerably elevate osseointegration through pathogen elimination, inflammation dampening and osteogenesis promotion. Altogether, our present study puts forward a conceptually new tactic that arms orthopedic implants with glucose-primed antibacterial and osteogenic capacities for intractable diabetic osseointegration.
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PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
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2026
·
IF 6.9
Jing Xu,Fengxiang Zhou,Hangqing Xie,Tie Zhang,Jiadi Lian
Photothermal superhydrophobic coatings have been recognized as a promising strategy for preventing ice accretion on industrial infrastructures. However, their practical deployment is often limited by mechanical fragility and performance decay under harsh icing conditions. Herein, we report a robust anti-icing coating- denoted as MSP (MXene-F-SiO 2 -PEEK). In this system, MXene acts as a nanoscale photothermal furnace, enabling rapid surface heating under illumination, while F-SiO 2 constructs a hierarchical micro/nanostructure that impairs ice nucleation through exceptional water repellency. The synergistic interplay between the photothermal effect and superhydrophobicity results in a remarkable freezing delay—three times longer than that of bare stainless steel—and enables rapid deicing within 181 ± 4 s under 0.2 kW/m 2 illumination. Moreover, the intrinsic self-lubricating property of MXene and the robust adhesion provided by the PEEK matrix collectively endow the coating with outstanding mechanical durability, maintaining its performance after extensive abrasion. This MSP coating strategy offers a promising and scalable solution for combating ice accretion and providing lubrication in dynamic systems, such as mechanical joints, operating under demanding low-temperature and high-humidity conditions.
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WEAR
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2026
·
IF 6.1
Dapeng Gu,Hao Xu,Ke Liu,Chenxi Suo,Junqi Ge,Suwen Chen
To achieve the low-temperature combination of ceramics and polymers, the core-shell structure and cold sintering method are employed to prepare ceramic/polymer composites. An easy-bonding Silica (SiO 2 ) shell was introduced onto the surface of the hard-bonding Hexagonal boron nitride (h-BN) core by a sol-gel method to fabricate a core-shell structured h-BN@SiO 2 composite. Polyether ether ketone (PEEK) was subsequently filled into h-BN@SiO 2 to prepare h-BN@SiO 2 /PEEK ceramic composite by a cold sintering method. The effects of PEEK content (20 vol%, 35 vol%, and 50 vol%), sintering temperature (205 °C, 245 °C, 285 °C, and 325 °C), and molding pressure (350 MPa, 450 MPa, and 550 MPa) on the dry tribological properties of h-BN@SiO 2 /PEEK ceramic composites against GCr15 bearing steel were investigated using a ball-on-disc contact configuration. Field emission transmission electron microscopy (TEM), Energy dispersive spectrometer (EDS), Field emission scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectrometer (FTIR) were used to characterize and analyze h-BN@SiO 2 or h-BN@SiO 2 /PEEK ceramic composites. The results indicate that h-BN@SiO 2 /PEEK composite exhibits better tribological performance when fabricated with a PEEK content of 35 vol%, a sintering temperature of 285 °C, and a molding pressure of 450 MPa under the investigated conditions. The formation of a stable and continuous mixed lubrication layer composed of h-BN, PEEK, and SiO 2 is identified as the primary factor contributing to the enhanced friction reduction and wear resistance. Under the investigated conditions, the main wear mechanisms observed in h-BN@SiO 2 /PEEK composites are adhesive wear, fatigue wear, and slight abrasive wear.
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高影响因子
ACS Applied Materials & Interfaces
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2026
·
IF 7.8
Wanxing Xu,Tianyi Han,Chenhui Zhang,Jianbin Luo
A hydrogel is an ideal material for lubrication, with hydrogel-filled microcapsules emerging as a promising strategy to simultaneously achieve low friction and high load-bearing capacity. The hydrogel microcapsules were prepared with porous SiO2 as the shell; polyvinyl alcohol (PVA), polyacrylic acid (PAA), tannic acid (TA), and dimyristoyl phosphatidylcholine (DMPC) sol (named as PPTD sol) as one type of core material, and calcium lactate as another core material, and the two kinds of microcapsules were compounded into the PEEK matrix. During friction, the released PPTD sol and calcium lactate were cross-linked into the hydrogel through microporous extrusion and covered on the friction surface. The in situ formation of the lubricating hydrogel layer significantly improved the polymer's lubrication performance under severe operating conditions, with the friction coefficient decreased by above 82% and the one-order-of-magnitude decrease of the wear rate. The strategy is expected to become a universal solution.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Jianfei Cao,Chao Peng,Haiyan Xiong,Shuhao Yang,Hongmei Yu,Haoming Wu,Yue Lu,Hai Lan,Yi Liu
The synergistic confluence between osteoinductivity and antimicrobial properties improves the efficacy of bone defect repair, reducing the occurrence of surgical complications and ultimately enhancing treatment outcomes. Drawing inspiration from mussel adhesion proteins, this study proposes a bioinspired coating strategy to fabricate bifunctional 3D-printed polyetheretherketone (PEEK) scaffolds with polydopamine-modified hydroxyapatite (PHA) coating and moxifloxacin (MOX) loading. Our findings reveal that the PHA coating significantly increases the surface roughness and hydrophilicity of PEEK, facilitating efficient MOX adsorption and sustained release. In vitro evaluations confirm the superior cytocompatibility of the PHA-modified scaffolds, which significantly promote the adhesion, proliferation and differentiation of MC3T3-E1 osteoblasts. Moreover, MOX-loaded scaffolds exhibit potent antibacterial activity against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus (96.1% and 98.7% inhibition, respectively). In summary, this integrated synergistic design not only fosters bone regeneration but also minimizes infection risks, making these scaffolds promising advanced implants for effective bone defect repair and drug delivery. Download: Download high-res image (188KB) Download: Download full-size image
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