ChemistrySelect
·
2023
·Vol. 8
·期 47
·e202303036
·
IF 2.1
Nan Liu,Binglian Zhu,Rutong Zhang,Weiqiao Zhong,Qibin Chen
Graphical NH 2 -silica-C 8 H 17 nanosheets containing short n-octyl chains and aminopropyl groups were investigated as a novel toughening agent for enhancing the toughness and strength of epoxy resin. The incorporation of 0.5 wt.% Janus nanosheets led to remarkable enhancements in the mechanical, dynamic mechanical, and thermal properties of the epoxy resin, as evidenced by the characterization results. In this work, a NH 2 -silica-C 8 H 17 Janus nanosheet with short n -octyl chains on one side and aminopropyl groups on the opposite side was prepared by the sol-gel method. This nanosheet was used to improve the toughness and strength of epoxy resin. The morphologies and structures of Janus nanosheets and the properties of NH 2 -silica-C 8 H 17 /epoxy nanocomposites were characterized. Results show that the addition of Janus nanosheets not only increases the storage modulus and glass transition temperature of nanocomposites, but also improves their mechanical performance and thermal stability. The tensile strength, elongation at break, fracture toughness and impact strength of nanocomposites are increased by ca. 57, 80, 74 and 63 %, respectively, at the 0.5 wt.% loading of Janus nanosheets. These findings suggest that NH 2 -silica-C 8 H 17 Janus nanosheets exert an effective influence on the toughness and strength of ultimate nanocomposites, which is attributed to the fact that NH 2 -silica-C 8 H 17 Janus nanosheet simultaneously contains n -octyl and aminopropyl groups on both sides, thus improving the nanosheet/matrix interface adhesion.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2019
·
IF 6.282
Tao Zhang,Yue Xu,Hongfu Li,Boming Zhang
In this study, the effect of carbon fiber (CF) surface chemistry and grafting of nano-SiO 2 on CF surface with respect to the interfacial adhesion of CF-reinforced nylon 6 composites was investigated. CFs were oxidized and reacted with poly(oxypropylene) diamines to modify the surface chemistry. The oxidized CFs were modified with 3-aminopropyltriethoxysilane and then grafted with SiO 2 nanoparticles. Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microcopy (SEM), and atomic force microscopy (AFM) were used to characterize the chemistry and topographies of the CF surface. The transverse fiber bundle strength of CF oxidized and grafted nano-SiO 2 increased to 31.92 MPa and 39.35 MPa, respectively, from 12.57 MPa for untreated CF. The results indicated that the reaction between the carboxyl group and nylon 6 led to chemical bonding at the interface and it meanwhile was strengthened and toughened by uniformly distributed SiO 2 nanoparticles on the CF surface.
研究领域:
材料科学
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 34
·期 13
·2108820
·
IF 32.086
Yaqian Liu,Pudi Wang,Xing Su,Liang Xu,Zhuoling Tian,Hao Wang,Guojun Ji,Jianyong Huang
Adjustable interfacial adhesion is of great significance in smart-hydrogel-related engineering fields. This study presents an electroadhesion strategy for universal and ultrastrong hydrogel bonding with electrically programmable strength. An ionic hydrogel containing lithium ions is designed to achieve hydrated-ion-diffusion-mediated interfacial adhesion, where external electric fields are employed to precisely control spatiotemporal dynamics of the ion diffusion across ionic adhesion region (IAR). The hydrogel can realize a universal, ultrastrong, efficient, tough, reversible, and environmentally tolerant electroadhesion to diverse hydrogels, whose peak adhesion strength and interfacial adhesion toughness are as high as 1.2 MPa and 3750 J m −2 , respectively. With a mechanoelectric coupling model, the dominant role of the hydrated ions in IAR played in the interfacial electroadhesion is further quantitatively revealed. The proposed strategy opens a door for developing high-performance adhesion hydrogels with electrically programmable functions, which are indispensable for various emerging fields like flexible electronics and soft robotics.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2022
·
IF 9.879
Yingze Li,Nuo Xu,Hanxiong Lyu,Naiyu Jiang,Hongyan Zhang,Nan Zhou,Dongxing Zhang
The weak interfacial adhesion between carbon fiber (CF) and polyetheretherketone (PEEK) is a longstanding problem that hinders the applications of CF/PEEK composites. To solve this problem, a mixture sizing agent containing hydroxylated boron nitride (BNO) and polyetherimide (PEI) is synthesized to coat CF. In this study, BNO is synthesized via the liquid exfoliation method. The interfacial adhesion between CF and PEEK is improved using a mixture sizing layer of BNO and PEI on CF. The synergistic effects of hydrogen bonding , π-π interaction and good compatibility are evaluated to remarkably increase the miscibility and mechanical interlocking, ultimately enhancing the thermal conductivity , mechanical and tribological properties. Therefore, the PEI-BNO sizing layer on CF has proven to have great potential for high-performance CF/PEEK composites.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Lijie Yin,Wei Li,Yichen Lu,Yang Meng,Ming Tian,Nanying Ning,Wencai Wang
To enhance the interfacial adhesion between ultra-high molecular weight polyethylene (UHMWPE) fibers and rubber, a novel environmentally friendly low-temperature dipping system was developed. This system involves reacting polyethylene glycol, butanone oxime-capped hexamethylene diisocyanate, and a cross-linking agent to form a network structure, which is then blended with latex to create a polypolyol-isocyanate-latex (PIL) dipping solution. Initially, the UHMWPE fiber surface was activated using continuous plasma treatment, serving as an alternative to traditional activation solution. Subsequently, the fibers were dipped by the PIL solution. The H pull-out force between the modified UHMWPE fibers and rubber increased by 114 % to 137.6 N, outperforming the conventional resorcinol–formaldehyde-latex (RFL) system. In addition, the PIL system avoids the use of toxic resorcinol and formaldehyde and can cure at lower temperatures, making it more suitable for UHMWPE fibers with low melting points. The modified UHMWPE fiber/rubber composites also exhibited good aging and fatigue stability. This method is characterized by its simplicity, minimal damage to the fibers, and advantages in continuity and scalability, offering new guidance for the interface design of UHMWPE fiber/rubber composites.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2013
·
IF 5.008
Shusheng Chen,Yewen Cao,Jiachun Feng
Carbon fibers (CFs), which exhibit excellent physical performances and low density, suffer from their low surface activity in some application. Herein, based on dopamine chemistry, we proposed an efficient method to functionalize them: through a simple dip-coating procedure, the CFs were inverted from amphiphobic to hydrophilic with deposition of polydopamine film. Furthermore, using polydopamine as a bridge, the hydrophilic functionalized CFs were transformed to be oleophilic after following octadecylamine grafting. To illustrate applications of this functionalization strategy, we added 15 wt % functionalized CFs into polar epoxy and nonpolar poly(ethylene-co-octene), and as a consequence, their tensile strength respectively increase by 70 and 60%, which show greater reinforcing effect than the unmodified ones (35 and 35%). The results of dynamic mechanical analysis and scanning electron microscope observations indicate that this polydopamine-based functionalization route brought about satisfactory improvements in interfacial adhesion between fillers and matrix. Considering that this simple approach is facile and robust enough to allow further specific functionalization to adjust surface properties, these findings may lead to the development of new efficient strategies for surface functionalization of CFs that are of great interest to the industrial field.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2022
·
IF 5.546
Weiwei Wang,Haolang Liu,Li Pei,Huihui Liu,Meichen Wang,Shuiquan Li,Zhi Wang
While both polybenzoxazine and carbon fiber are attractive due to their excellent mechanical properties, polybenzoxazine suffers from low toughness, and carbon fiber has an inert surface. By incorporating newly designed and synthesized curcumin-based polyurethanes with varying chain lengths into polybenzoxazine (PU1.2 and PU2.0) and the surface of carbon fiber, we were able to introduce variable amounts of hydrogen bonds. Our modified polybenzoxazine exhibited enhanced mechanical properties, such as higher toughness and flexural strength of up to 16.0 kJ/m 2 and 147 MPa, respectively. In comparison, the flexural strength of our surface-modified carbon fiber reinforced benzoxazine composites was up to 537 MPa. Additionally, the improved mechanical properties of surface-modified carbon fiber reinforced polybenzoxazine are because curcumin-based polyurethanes can significantly improve the interfacial adhesion between the matrix and resin by introducing a soft layer with a high concentration of hydrogen bonds. Our study not only improved the mechanical properties of polybenzoxazine and carbon fibers reinforced polymer composites, but also revealed a novel method for enhancing the mechanical properties of thermosetting resins and interface adhesion of carbon fiber by regulating the hydrogen bonding content.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Qing Wu,Dan Jin,Quansheng Ma,Bolin Xiao,Yating Li,Yidi Zhang,Jianfeng Zhu
This paper first explores the bio-inspired green surface modification of carbon fiber by two geometries of polydopamine (PDA), that is amorphous coating and nanospheres (PDA NPs ). Compared to only amorphous PDA modified fibers, synergistic modification using dual PDA variants is more effective in enhancing fiber strength and interfacial performance of composite. When the reaction time of amorphous PDA on carbon fiber reaches 96 h, it could adsorb more PDA NPs with dense and uniform distribution, which consequently leads to the maximal enhancements of 20.5 % and 64.4 % in fiber strength and interfacial shear strength due to the synergistic effects of improved resin infiltration, barb-like micro-nano interlocking, dynamic hydrogen bonds that repeatedly dissipate energy, epoxy molecules slide along PDA NPs that alleviate stress, and crack defection by dense PDA NPs . This paper highlights an effective and green-initiative avenue for the promising interfacial engineering modulation of high-performance composites.
研究领域:
材料科学
·
复合材料
·
表面改性
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Yongqiang Jia,Lingling Zhang,Maoyi Han,Xunjie Wang,Yuxiang Shang,Zhendong Hao,Ti Liu,Mingfang Wu,Zhixin Ba
The interfacial interaction between active electrode materials and current collectors is a cornerstone in defining the electrochemical efficacy of lithium-ion batteries. In this investigation, we have designed a high conductivity and robust associativity aluminum current collector, through integrating a novel network-crater structure into the surface of aluminum current collector by adopting a hybrid technique that combines chemical etching, with the electrochemical polymerization of conductive polyaniline (PANI) films. Of particular interest, when the electrochemical polymerization cycle is optimized to 5 (P/E-Al-5), the resultant structure exhibits augmented wettability and an extraordinary interfacial adhesive strength, with a peel value of 417.0 N/m. This augmentation is ascribed to the synergistic influence of mechanical interlocking and chemical bonding at the interface between the aluminum current collector and the LiFePO 4 layers. Furthermore, the P/E-Al-5 current collector demonstrates commendable electrical conductivity, and the batteries incorporating this collector exhibit the least charge transport resistance. Consequently, the P/E-Al-5 current collector imparts enhanced electrochemical performance, distinguished by the highest rate capability and cycling stability. Impressively, at a high current rate of 5 C, the P/E-Al-5 collector manifests an average discharge capacity of 98.8 mAh g -1 , a 59% improvement over the unmodified aluminum sample (62.0 mAh g -1 ). Additionally, battery with the P/E-Al-5 current collector displays an elevated reversible discharge capacity, with a retention rate of 99.2%. This study provides an inspiration for the design of high-performance aluminum current collector.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Li Liang,Xiaode Guo,Xin Liao,Zhipeng Chang
To improve the interface incompatibility, poor corrosion resistance, and limited combustion efficiency of aluminum powder for propellant applications. The surface of the naked aluminum was coated with a layer of dense nickel of about 100 nm by replacement method. A polydopamine film was then deposited by self-polymerization. The double-layer structure and chemical composition were investigated. The polydopamine content of composite particles was 2.3% by thermal analysis. And its heat release around 1050 °C reached 4137 J g −1 , which was much higher than that of aluminum of 1644 J g −1 . The surface energies was used to calculate the theoretical adhesion work of aluminum and composite particles to propellant binder. The adhesion work after modification was increased from 62.33 mN m −1 to 74.89 mN m −1 . No matter in the weak acid/alkaline or neutral environment, the composite particles exhibited excellent stability at 50 °C. In addition, the combustion test revealed that the composite particles had higher combustion efficiency, smaller condensed phase product size, and stronger ignition ability. All the conclusions indicate after modification by nickel and dopamine, the comprehensive performance of aluminum is improved, and it may be used as an energy component in propellants or other energetic fields.
研究领域:
材料科学
·
化学工程
·
推进剂技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Wuqing Zhu,Yinlei Lin,Wanwen Kang,Haiyan Quan,Yuyuan Zhang,Menglei Chang,Kun Wang,Min Zhang,Weibin Zhang,Zhiqiang Li,Hongyang Wei,Ting Fan,Dongchu Chen,Huawen Hu
The increasing environmental pollution calls for the development of stable functional materials for efficiently binding contaminants, while they can be synthesized and recycled easily. Herein, a three-dimensional (3D) aerogel is constructed by bio-inspired adhesion of graphene and MoS 2 sheets with polydopamine (PDA) through a one-step hydrothermal route for the adsorption of the water-soluble organic contaminants. The impact of the bio-inspired interfacial adhesion on the resulting composite aerogel is thoroughly investigated, e.g., the interfacial PDA layer renders the composite aerogel considerably more porous, together with the much higher specific surface area and pore volume, as well as strikingly smaller average pore size and superior stability upon exposure to air, relative to the counterpart without the bio-inspired adhesion. The 3.2 wt% PDA composition is adequate to yield a composite structure with small MoS 2 nanocrystallites uniformly dispersed over the modified graphene surface without aggregation. The adsorption of methylene green onto such a 3D composite architecture is spontaneous and endothermic and obeys the Langmuir isotherm model and pseudo-second-order kinetics, with the maximum adsorption capacities over 200 mg/g at all the operating temperatures and the satisfactory recycling properties without significant degradation after 5 cycles.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2017
·
IF 4.421
Wei Luo,Bin Zhang,Huawei Zou,Mei Liang,Yang Chen
In order to improve the interfacial properties in polypropylene/carbon fiber (PP/CF) composites, graphene oxide and brached polyethyleneimine were coated onto the surface of carbon fiber by layer-by-layer assembly in this work. Compared with the origin PP/CF composite, the composites reinforced by PP/CF–GO showed significant enhancement not only in tensile strength but also in elongation at break. The improved fiber–matrix adhesion was proved by fracture morphology observation of scanning electron microscopy and almost unaffected mechanical properties of the fiber itself during the coating process. The optimal assembly time was found to be 10 for enhancing the overall composite mechanical performance.
研究领域:
材料科学
·
复合材料
✓ 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）