Polymers
·
2022
·Vol. 14
·期 6
·1242
·
IF 4.967
Xuhui Sun,Chengcheng Yu,Lin Zhang,Jingcao Cao,Emrullah Hakan Kaleli,Guoxin Xie
Over the past few decades, polyetheretherketone (PEEK) artificial bone joint materials faced problems of poor wear resistance and easy infection, which are not suitable for the growing demand of bone joints. The tribological behavior and wear mechanism of polyetheretherketone (PEEK)/polytetrafluoroethylene (PTFE) with black phosphorus (BP) nanosheets have been investigated under dry sliding friction. Compared with pure PEEK, the COF of PEEK/10 wt% PTFE/0.5 wt% BP was reduced by about 73% (from 0.369 to 0.097) and the wear rate decreased by approximately 95% (from 1.0 × 10−4mm3/(N m) to 5.1 × 10−6mm3/(N m)) owing to the lubrication of the BP transfer film. Moreover, BP can endow the PEEK composites with excellent biological wettability and antibacterial properties. The antibacterial rate of PEEK/PTFE/BP was assessed to be over 99.9%, which might help to solve the problem of PEEK implant inflammation. After comprehensive evaluation in this research, 0.5 wt% BP nanosheet-filled PEEK/PTFE material displayed the optimum lubrication and antibacterial properties, and thus could be considered as a potential candidate for its application in biomedical materials.Keywords:black phosphorus;polyetheretherketone;lubrication properties;antibacterial properties
研究领域:
材料科学
·
生物材料工程
·
摩擦学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Chao Song,Ting Hu,Yan Liu,Rong Guo,Jie Han,Juqun Xi,Lei Fan
Conventional industrial conductive lubricants often contain various components to meet their functional requirements for long-term stabilization, lubrication, and conductivity. The complexity of these components makes their preparation, storage, and recycling difficult. To solve this problem, a simple three-component lamellar liquid crystals (LLCs) containing surfactant Brij30, H 2 O, and ionic liquid [C 10 mim]Br was designed and prepared. The results demonstrated that the Brij30/[C 10 mim]Br/H 2 O LLCs system has high stability, lubricity, and conductivity. In the friction test, compared with LLCs without ionic liquids, LLCs with 70 wt% [C 10 mim]Br content showed the best antiwear performance, reducing wear depth by 64.96 % and wear volume by 61.79 %. The lowest coefficient of friction was 0.0877 in the extended cycle test. The conductivity test illustrated the LLCs exhibited high electric conductivity in the [C 10 mim]Br concentration range of 40 wt% to 60 wt%. The addition of ionic liquid not only acts as a co-surfactant in the liquid crystal system to promote the assembly of the surfactant but also improves the lubrication performance and enhances the conductivity of the liquid crystal system. The generation of friction chemically reaction and physically adsorption films formed by LLCs at the friction interface has a synergistic effect on lubrication in the sliding friction process. The spherical wear particles generated by the friction process facilitate rolling friction to promote lubrication. In addition, LLCs can easily realize reusability by removing the wear debris generated by the friction process using the magneto-thermal method. These advantages make the LLCs a promising green, efficient conductive lubricant system.
研究领域:
材料科学
·
化学工程
·
摩擦学
✓ 已验证
产品关联
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2024
·
IF 6.1
Kun Cui,Fan Xu,Bingyu Tian,Mengyao Liu,Yingying Yao,Haolin Li,Ping Wen,Rui Dong,Mingjin Fan
The poor wear resistance of titanium alloy makes it challenging to develop high-performance lubricating materials. For the characteristic of highly designable structure, ionic liquids (ILs) are the potential lubricants with excellent physicochemical properties and lubricating performance. Herein, three protic phosphorus-based ionic liquids (PPILs) were designed and synthesized with the exploration of their interfacial lubrication behavior and interaction mechanism on the titanium substrate. The as-synthesized IL lubricants exhibit optimal tribological properties on steel-titanium friction pairs even at high load and temperature. The surface analysis showed that IL can form the lubricating protective film on the titanium-based metal surface, effectively reducing the adhesive wear . Combined with surface analysis techniques (SEM, XPS , FIB-TEM and TOF-SIMS), the lubrication mechanism was discussed systematically.
研究领域:
材料科学
·
摩擦学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2021
·
IF 3.882
Ximing Lu,Lei Fan,Chao Song,Zhilong Xu,Yimin Hu,Rong Guo
Lamellar liquid crystals have amazing lubricating and drug-solubilizing properties. Hence, the combination of drug molecules with lamellar liquid crystals is expected to be used in joint lubrication and treatment. In this study, the partial phase diagram of the Tween 85/Tween 80/H2O three-component system was determined. The phase structure of the system changed from a hexagonal liquid crystal to a lamellar liquid crystal with the increase of Tween 85 content. The lamellar liquid crystals showed superior lubricating properties due to their unique lamellar structure. Furthermore, the model of drug release during friction was established for the first time. It was found that the order of the lamellar liquid crystals increased with the increase of the mass ratio of Tween 85/Tween 80, leading to the decrease of the ibuprofen release rate. In addition, the release rate of ibuprofen increased progressively with the increase of the friction frequency, but the load had little effect on it. Therefore, the lamellar liquid crystals consisting of nonionic surfactants with good biocompatibility have potential application prospects for joint lubrication and treatment of arthritis.
研究领域:
材料科学
·
药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
WEAR
·
2021
·
IF 3.892
Tiancheng Ouyang,Wenwu Lei,Wentao Tang,Yudong Shen,Chunlan Mo
The development of eco-friendly lubricant is the requirement of the times. In this paper, the modified IF-WS 2 nanoparticles are added to castor oil as additives to prepare mixed lubricant. The lubrication performances of the mixed oil are investigated by ball-on-disc rotary friction tester, and then the surface scratches are characterized by depth of field digital microscope, scanning electron microscope and Raman spectrometer. Experiments reveal that compared with the base oil, the friction coefficient and worn volume decrease by 27.4% and 47.2% after adding modified IF-WS 2 as additives under 300 rpm and 5 N conditions, respectively. From mechanism analysis, this improvement in lubrication performance is attributed to the polarity of castor oil and the unique pressure bearing structure and dispersion stability of modified IF-WS 2 , which makes that the castor oil molecules can better adsorb around the modified IF-WS 2 to form heavy loading bearing friction oil film so as to reduce friction and wear. In summary, results indicate the mixture of modified IF-WS 2 nanoparticles and vegetable lubricating oil has an attractive prospect in the field of environmentally-friendly products.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
·
2022
·
IF 4.804
Jiakun Wu,Haikuo Wang,Zhicai Zhang,Chao Wang,Zhiqiang Hou,Shun Wan,Dazhuan Wu,Xiaoping Ouyang
WC-cBN-MoS 2 self-lubricating ceramics were synthesized by using high pressure and high temperature sintering method. An analytical model of the self-lubricating properties has been developed to reveal the interrelationship between mechanical and self-lubricating properties. The influence of mechanical and self-lubricating properties of ceramics on the wear rate were analyzed. Self-lubricating performance optimization criterion are proposed accordingly. It was found that MoC, WS 2 can be formed during sintering, which can ensure self-lubricating and low temperature sintering properties. Adhesive wear is the main wear mechanism, the extent of which varies with the content of self-lubricating components. The high modulus of elasticity is the main reason for the excellent self-lubricating and mechanical properties of composites. The well-sintered WC-cBN-MoS 2 bulks present an excellent self-lubricating property with a hardness of 26.3 GPa and fracture toughness of 10.5 MPa·m 1/2 , which is improved at least by 52% and 46% respectively compared with the traditional self-lubricating ceramics.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Peipei Zhang,Yang Gao,Shaohai Li,Shaoliang Zhao,Hai Wang,Pengcheng Yu,Guanghui Gao,Yuanrui Wang
Medical catheters require lubrication and antimicrobial properties to reduce complications, such as tissue trauma and bacterial infections. Coating hydrogel on the catheter surface is a promising strategy; however, it usually faces the challenge of weak interfacial adhesion, thus leading to coating delamination or fracture and failure. Here, a waterborne polyurethane (WPU)-triggered surface bonding strategy was presented to construct hydrogel coatings, which involved two key steps: (i) coating a sticky WPU layer on the catheter surface and (ii) dip-coating the WPU-coated catheter with a monomer solution consisting of quaternary ammonium chitosan (QCS), sulfobetaine methacrylate (SBMA), N-vinylpyrrolidone (NVP), and zinc sulfate heptahydrate (ZnSO4·7H2O) for growing the hydrogel layer by ultraviolet initiation. The hydrogel coating demonstrated tough adhesion performance to the catheter, and the interfacial bonding strength achieved 536 N/m. Meanwhile, the hydrogel coating had a variable thickness adjusted by QCS and possessed excellent hydrophilicity (WCA = 24.6°) and low surface friction properties (COF = 0.0357) based on the formation of the hydration layer. Furthermore, the introduction of ZnSO4·7H2O endowed the hydrogel coating with prominent antimicrobial properties against Escherichia coli (Gram-negative bacteria) and Bacillus subtilis (Gram-positive bacteria). This approach paves an avenue for fabricating hydrogel coatings with strong interface stability, controllable thickness, lubrication, and antibacterial properties.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yang Yang,Yuan Liu,Xuanhe You,Haibo Si,Yuangang Wu,Wacili Da,Limin Wu,Yaojia Zhou,Yi Zeng,Yong Nie,Shimei Xu,Bin Shen
Microgels have attracted increasing attention as drug carriers for osteoarthritis (OA) treatment due to their injectability and modifiability. However, effectively designing high-efficiency drug-loading and multifunctional microgel carriers to achieve synergistic therapy of OA remains a challenge. Here, monodisperse, small-sized, porous, lubricated microgels composed of hyaluronic acid and polysulfomethylacrylate are developed using a multiple Pickering emulsion process. Then, the surface of microgels is modified with the cartilage-targeting peptide screened through phage display technology to create targeted microgels. The microgels exhibit porosity, small size (≈20 µm) and a swelling ratio of up to 4136.67%, which facilitate efficient loading, targeted delivery, and controlled release of miR-140, maintaining the metabolic balance of cartilage matrix and inhibiting the development of OA. Additionally, the microgels demonstrate remarkable lubrication performance attributed to the formation of the hydration layer around the hydrophilic groups of the polymers. The in vivo data demonstrate synergistic lubrication and sustained targeted release of miR-140 by the microgels, resulting in reduced joint wear, decreased osteophyte formation, and effective alleviation of OA progression. This work not only offers a novel method for the preparation of multifunctional microgels, but also lays the foundation for providing new strategies and clinical translation in OA the treatment.
研究领域:
生物材料学
·
医学
·
药剂学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Jianfeng Li,Wei Cao,Jinjin Li,Ming Ma
Hypothesis Achievement of superlubricity is an effective method to reduce friction and wear, which has a prominent influence on the operational efficiency and lifetime of a device. However, some burning issues still remain to be solved for the practical applications of superlubricity, such as the poor load-bearing capacity, especially in liquid superlubricity. Therefore, exploring an effective method to enhance the superlubricity performance is essential to accelerate the application of superlubricity. Experiments The friction properties between two different self-assembled monolayers (SAMs)—a perfluorocarbon SAM and a hydrocarbon SAM—and graphite in water were explored and compared by atomic force microscopy (AFM). Findings Enhanced superlubricity performance due to the fluorination was observed. Specifically, we observed an approximately 85% reduction of the friction coefficient after fluorination, and superlubricity was achieved with extremely low friction coefficient of 0.0003. Moreover, 2.4-fold greater load-bearing capacity of the superlubricity was obtained after fluorination. The molecular origin of the superlubricity enhancement by fluorination was revealed by molecular dynamics (MD) simulations, indicating that the greater load-bearing capacity of the perfluorocarbon SAM was ascribed to the enhanced interaction between the water and SAM by fluorination to form a more robust layered water structure confined in the contact zone, which played a pivotal role in the superlubricity.
研究领域:
材料科学
·
表面科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TRIBOLOGY LETTERS
·
2022
·Vol. 70
·期 2
·1-16
·
IF 3.327
Wang Peng,Gao Peng,Ma Lin,Wen Ping,Han Yunyan,Dong Rui,Fan Mingjin
In this paper, four ionic liquids based on chromotropate (CAILs) were prepared and applied to heighten the tribological performance of aqueous system on different metal friction contacts. Taking for the potential choice for water-based lubricating additive, CAILs exhibited excellent water solubility and corrosion resistance. Tribological results showed that the CAILs, especially the phenolic hydroxyl group decorated samples (TsnN 4444 and TsnP 4444 ), demonstrating extremely effective lubricating properties with the efficient friction and wear descent (69% and 83% for Fe, 47% and 94% for Cu, 74% and 69% for Al, respectively). Especially, the excellent load-carrying capacity was also presented with the highest P B (833 N) and P D (1568 N) values for TsnP 4444 . It is speculated that the CAIL molecular adsorption on the interface and further generation of tribochemical films are beneficial for their lubricating effects, resulting from the systematic discussion and analysis of CA, QCM, SEM, XPS, and FIB-TEM tests. However, TsN 4444 and TsP 4444 showed less effective lubricating performances and poor load-carrying capacities due to tribocorrosion of hydroxyl groups at the interface. Graphical Abstract
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Fen Xiao,Jianxin Tang,Xing Huang,Wenji Kang,Guiyin Zhou
Healthy articular cartilage can achieve high load-bearing capacity and the most effective lubricated surface. Inspired by the articular cartilage, a lipid-lubricated hydrogel with excellent mechanical strength and remarkable lubrication was designed and synthesized. The lipid-lubricated hydrogel could contribute to high strength and stiffness (compressive strength of 5.8 MPa and compressive modulus of 4.7 MPa at 50% strain), and it could recover more than 98% of original mechanical properties in a short time after loading–unloading. In addition, the friction coefficient of lipid-lubricated hydrogel is low as 0.026, 5.3 times smaller than hydrogel without adding the liposomes . Overall, the hydrogel we studied holds the potential as a load-bearing soft tissue substitute for articular cartilage.
研究领域:
生物材料学
·
医学工程
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Friction
·
2024
·Vol. 12
·期 8
·1728-1740
·
IF 6.3
Cui Yuhong,Xue Shenghua,Wang Tiantian,Liu Shujuan,Ye Qian,Zhou Feng,Liu Weimin
Herein, we have prepared SiO 2 particles uploaded MXene nanosheets via in-situ hydrolysis of tetraetholothosilicate. Due to the large number of groups at the edges of MXene, SiO 2 grows at the edges first, forming MXene@SiO 2 composites with a unique core-rim structure. The tribological properties of MXene@SiO 2 as lubricating additive in 500 SN are evaluated by SRV-5. The results show that MXene@SiO 2 can reduce the friction coefficient of 500 SN from 0.572 to 0.108, the wear volume is reduced by 73.7%, and the load capacity is increased to 800 N. The superior lubricity of MXene@SiO 2 is attributed to the synergistic effect of MXene and SiO 2 . The rolling friction caused by SiO 2 not only improves the bearing capacity but also increases the interlayer distance of MXene, avoiding accumulation and making it more prone to interlayer slip. MXene@SiO 2 is adsorbed on the friction interface to form a physical adsorption film and isolate the friction pair. In addition, the high temperature and high load induce the tribochemical reaction and form a chemical protection film during in the friction process. Ultimately, the presence of these protective films results in MXene@SiO 2 having good lubricating properties.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）