POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Xinru Yan,Yan Wang,Yaoming Zhang,Qihua Wang,Zhancheng Zhang,Mingchao Shao,Xianqiang Pei
To address the demand for lightweight, wear-resistant PEEK friction materials in humanoid robotics, this study employed liquid-assisted mechanochemical synthesis to create ZIF-62 crystals. These crystals were then incorporated as functional fillers into PEEK to fabricate ZIF-62/PEEK composites using fused deposition modeling (FDM) technology. The analysis explored how the material's properties related to mechanics and wear are affected by the amount of ZIF-62 (1–3 wt.%), utilizing pin-on-ring friction tests with GCr15 steel rings as the counterface. The tribological mechanisms of the composites were explored by analyzing the morphology of the composites' surfaces after wear, along with the morphology and chemical composition of the transfer films developed on the matching surface. Particular emphasis was placed on the impact of interfacial tribochemical reactions and transfer film establishment on the composite's tribological performance. Research indicates that the integration of ZIF-62 boosts the composite's strength and ability to withstand wear. Specifically, at a ZIF-62 concentration of 3 wt.%, the composites reach 3.7 × 10 −6 mm 3 /Nm, representing a 71.5% decline compared to pure PEEK, showcasing outstanding anti-wear capabilities. Findings of the study provide a unique solution for the tribological modification of PEEK, which is instructive for the design and preparation of PEEK tribo-materials used in humanoid robots.
研究领域:
材料科学
·
摩擦学
·
增材制造
·
聚合物复合材料
·
机器人材料
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2020
·Vol. 60
·期 9
·2204-2213
·
IF 1.917
Yuancheng Wang,Shanxin Xiong,Xiaoqin Wang,Jia Chu,Runlan Zhang,Bohua Wu,Ming Gong,Mengnan Qu,Zhen Li,Zhenming Chen
The water-dispersible electrochormic nanocomposites, polyaniline (PANI) connected multi-walled carbon nanotubes (MWCNTs) by covalent bond were synthesized through a grafting polymerization process of aniline monomer with functionalized MWCNTs. N,N ′-dicyclohexylcarbodiimide (DCC) was used as dehydrant for functionalization process of MWCNTs with p -phenylenediamine (PPD). The transmission electron microscope (TEM), scanning electron microscopy (SEM), thermal gravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FT-IR) were used to study the morphologies, thermal stabilities and chemical structures of the nanocomposites, respectively. The UV-vis absorbance spectra and cyclic voltammetry behaviors of nanocomposites were tested by UV-vis spectrometer and electrochemical workstation, respectively. It is shown show that PANI-MWCNTs nanocomposites not only exhibit good water solubility, but also exhibit excellent film-forming properties. The results confirm that the π-π interactions and interfacial covalent bond between PANI and MWCNTs endow PANI-MWCNTs excellent electrochemical and electrochromic properties. The conductive network composed of PANI and MWCNTs can significantly improve the ion transports, electron conduct and electrochromic performance of PANI. The PANI-MWCNTs-0.6% nanocomposite film shows highest optical contrast value (0.78) and shortest response time (3.8 seconds for coloring and 3.2 seconds for bleaching) among neat PANI and PANI-MWCNTs nanocomposites.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2014
·Vol. 55
·期 1
·223-230
·
IF 1.441
Zhao-Xia Li,Man-Geng Lu,Kun Wu,Yun-Fei Zhang,Lei Miao,Yin-Wen Li,Hui-Long Guo,Jian Zheng
A series of novel thermosensitive macroporous poly (ethylene glycol) (PEG)- co -poly( N -isopropylacrylamide) (PNIPAAm)- co -poly (ε-caprolactone) (PCL) hydrogels were synthesized via in situ free radical polymerization. Poly(ethylene glycol diacrylate) (PEGDAc) and poly(ε-caprolactone diacrylate) (PCLDAc) were prepared as macrocrosslinkers. All compounds were investigated by Nuclear Magnetic Resonance (NMR) and Fourier transform-infrared spectroscopy (FT-IR). Differential Scanning Calorimetry (DSC) results showed the lower critical solution temperatures (LCSTs) of the gels were at around 31°C. The macroporous gels not only had considerable swelling ratios, but also exhibited rapid swelling kinetics and response sensitivity. Above mentioned hydrogels showed a remarkable oscillatory swelling–deswelling transition, making them have potential application in long-term drug delivery. POLYM. ENG. SCI., 55:223–230, 2015. © 2014 Society of Plastics Engineers
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2018
·
IF 1.551
Yanbin Wang,Teng Wang,Tingmu Wang,Jinyi Zhang,Jinxing Chen,Rui Yang,Linxiao Ruan,Biaobing Wang
Recently, multifunctional films are of particular interest to scientists owing to their diversified properties. Here, we demonstrated that self-cleaning, self-extinguishing, and high conductive films were fabricated by simple solvent-casting method from poly(amide-imide)/polyaniline composites. The multifunctional films exhibited controllable water contact angles varying from 65° to 120° and high electrical conductivities of over 40 S m −1 . Moreover, due to the improved hydrophobicity, the multifunctional films showed self-cleaning characteristics and were used to collect the dust powders easily and perfectly during the dispensed water droplet rolling off the solid surface. Furthermore, the self-extinguishing property of the multifunctional films was confirmed by thermogravimetric analysis. The special film composition and morphology are the two important aspects that induce such unusual properties. The polyaniline content can strongly influence the morphology of the composite films, which in turn display different hydrophobicities and conductivities. POLYM. ENG. SCI., 59:E33–E43, 2019. © 2018 Society of Plastics Engineers
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Junrui Duan,Yuesheng Zhang,Zhiguo Hu,Hongtao Lu,Jianna Bao
Although blending brittle polylactide (PLA) with flexible poly(ε-caprolactone) (PCL) holds promise for developing biodegradable materials with tunable mechanical properties, their poor compatibility poses a significant challenge to effective toughening. In this study, PLA/PCL blends with varying Dibutyl itaconate (DBI) content were prepared via melt blending, and the effects of DBI loading on the properties of the blends were systematically investigated. The results demonstrated that the incorporation of DBI enhanced the intermolecular interactions between PLA and PCL chains, thereby improving their compatibility. The phase interface between the PLA matrix and the PCL dispersed phase became so progressively blurred with increasing DBI content that it was nearly indistinguishable at a loading of 7 phr, demonstrating a significant improvement in compatibility. With the increase in DBI content, both the elongation at break and impact strength of the blends exhibited a trend of initial increase followed by a decrease. At the optimal loading, the maximum values reached 314.3% and 29.5 kJ/m 2 , representing enhancements of 3.4-fold and 4.9-fold, respectively, compared to those of the neat PLA/PCL blend. Simultaneously, the crystallization rate and enzymatic degradation rate of the blends increased continuously with higher DBI content. This study opens a new avenue for developing high-toughness PLA-based blend materials without compromising their biodegradability. Summary DBI enhanced both elongation at break and impact strength of PLA/PCL blends. The incorporation of DBI improved the compatibility between PLA and PCL. The crystallization capability of the modified blends was enhanced. The modified blends showed an increased degradation rate.
研究领域:
材料科学
·
高分子科学
·
可生物降解材料
·
聚合物共混
·
力学性能
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2020
·Vol. 61
·期 3
·731-741
·
IF 1.917
Aixue Dong,Huimin Wu,Ruirui Liu,Qiang Wang,Xuerong Fan,Zhen Dong
In this study, nonpolar octyl gallate (OG), dodecyl gallate (DG), and octadecyl gallate (OCG) were grafted onto the surface of hydrophilic jute fabrics, which were mediated by horseradish peroxidase to improve the hydrophobicity of jute materials. The gallate-grafted jutes were characterized by infrared spectroscopy and grafting percentage (Gp), and the hydrophobic properties were evaluated by water contact angle and wetting time measurements. The Gps determined by saponification was 3.91%, 5.12%, and 4.58% for OG, DG, and OCG, respectively. The nonpolar chain length and the grafting rate of the monomers had a considerable effect on the hydrophobicity of the modified jute fabrics. The as-prepared hydrophobized jute fabrics had superior interfacial compatibility with nonpolar resins, such as polypropylene (PP) and polylactic acid (PLA) making them most suitable to be utilized in the development of jute fiber-reinforced thermoplastic composites. The tensile and dynamic mechanical properties of the grafted jute/PP or jute/PLA composites were improved compared with pure PP, PLA, and non-modified jute composites.
研究领域:
材料科学
·
生物化学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2019
·Vol. 59
·期 8
·1657-1666
·
IF 1.92
Shuai Li,Ximan Bu,Linlin Wu,Xiaofeng Ma,Wenjing Diao,Zhenzhen Zhuang,Yongmin Zhou
The emerging applications of hydrogels in flexible devices require it possess multifunctional properties including stable mechanical and functions under various deformations or external environments. Herein, a multifunctional polyvinyl alcohol/M-alginate/PAM hydrogel with very excellent mechanical properties and sensing functions was fabricated by introducing multiple pairs of toughing mechanisms into triple network (TN). The multiple supramolecular physical networks work as sacrificial networks to toughen the materials when hydrogel deforms. The broken bonds can reform upon unloading endowing the recovery of hydrogels' properties and functions with the assistance of the elastic covalent network. The optimal TN hydrogels are extremely tough (a fracture strength of 512 kPa, a fracture toughness of 3 MJ/m 3 ) and recoverable from fatigue damage (~77% toughness recovery after 5 min resting at room temperature). The presence of abundant ionic species endows the tough and recoverable TN hydrogels high ionic conductivity and high sensitivity as strain sensors. Moreover, such TN hydrogels with multi-bond crosslinking in three networks can potentially guarantee stable mechanical and sensor functions under various deformations or external environments compared to the DN candidates. This work provides a simple strategy for fabricating multifunctional hydrogels with high stability to fulfill its flexible devices applications. POLYM. ENG. SCI., 59:1657–1666 2019. © 2019 Society of Plastics Engineers
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2021
·Vol. 61
·期 5
·1405-1414
·
IF 2.428
Fuqiang Liu,Nan Ma,Jun Liu,Qiongqiong Zhu,Ting Yue,Junhui Ma,Yuan Wang,Wei Qu,Paul K. Chu,Yan Tang,Wei Zhang
The chains and segments of unordered cationic polypeptides are complex and may produce unexpected biological activities. Herein, the Ugi's 4CC reaction is adopted to synthesize a cationic alternating copolymer comprising ornithine and glycine (poly(Orn-alter-Gly)) with an ordered sequence for enhanced bacterial resistance. In this technique, potassium isocyanate, 4-(N-carbobenzyloxyamino)-1-butyraldehyde and 1-(4-Methoxyphenyl)ethylamine react to produce MPE-substituted poly(Orn-alter-Gly) in one step without using a catalyst and then poly(Orn-alter-Gly) is obtained by removing the N-(1-p-methoxyphenethyl) (MPE) group. 1 H NMR, Fourier transform infrared spectroscopy, and automatic amino acid analysis confirm that ornithine and glycine are linked alternately in the poly(Orn-alter-Gly) chains. Both MPE-substituted poly(Orn-alter-Gly) and poly(Orn-alter-Gly) have excellent antibacterial activity against Staphylococcus aureus , Escherichia coli , Klebsiella pneumoniae , and Pseudomonas aeruginosa as well as excellent biocompatibility. The synthesis strategy and materials provide new information on how to obtain ordered sequence cationic polypeptides.
研究领域:
聚合物化学
·
材料科学
·
生物医学工程
·
微生物学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2020
·Vol. 60
·期 11
·2724-2734
·
IF 1.917
Yan-Yu Yin,Xin Li,Zai-Yin Hu,Ru Wang
Shape memory hydrogels (SMHs) have been the subject of great interest in recent years. However, there were few reports on the simultaneous multiple shape memory and high mechanical performance. Therefore, a novel nanocomposite (NC) hydrogel poly (acrylic acid)/Chitosan/ Laponite (PAA/CS/Laponite) was developed by using Laponite as physical cross-linker. In order to achieve three temporary shapes, the PAA/CS/Laponite was soaked in iron chloride hexahydrate (FeCl 3 ), sodium hydroxide (NaCl) and sodium hydroxide (NaOH) respectively to (a) form metal coordination; (b) gain the chains entanglement of chitosan; (c) get the microcrystalline structure of chitosan. The maximum shape fixity ratio of PAA/CS/Laponite can reach 100% in 1 minute and it can be restored its original shape within 5 minutes. Moreover, PAA/CS/Laponite showed excellent mechanical performance. The maximum tensile and compressive strengths were 0.73 MPa and 13.1 MPa. By comparison with PAA/CS obtained from our previous work, the tensile strength, elongation at break and compressive strength increased by 2.21 times, 1.46 times, and 3.26 times respectively. Scanning electron microscopy (SEM) showed that the obtained sample has uniform honeycomb network structures which can effectively explain why the gel has strong mechanical performance. These characteristics make PAA/CS/Laponite have huge application potential in reality.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2019
·Vol. 60
·期 1
·61-70
·
IF 1.92
Han Yan,Hao Li,Wen Li,Xiaoqiang Fan,Lin Zhang,Minhao Zhu
Three-dimensional (3D) graphene aerogel (GA) with a spatial porous structure and network skeleton was facilely prepared via one-step self-assembly hydrothermal reduction. Such network structure is regarded as a critical advantage in resolving the dispersion of graphene in polymer matrix, thereby enhancing the damping property. Here, as-prepared GA was added to the carboxylated butadiene nitrile rubber/polyurethane blend (XNBR/PU) by melting/mechanical complex method. Their dynamic mechanical properties were investigated in detail, and the relationship between thermal aging and dynamic mechanical properties had also been studied. Finding that the storage modulus and loss modulus of XNBR/PU were continually improved with the increase in addition amount of high-performance GA, reaching 3,219 and 316 MPa with the content of 3 wt% GA, respectively. Loss factor (tanδ) of XNBR/PU with GA shows two sets of maximum values (0.22 and 0.61) at around −25 and 0.6°C, respectively. Results illustrate that GA can greatly improve the damping performance, damping temperature range, mechanical properties, and thermal aging resistance of XNBR/PU blend, mainly depending on the performance characteristics of GA and interface interaction between GA and XNBR/PU. Verifying that GA with 3D network structure holds a great prospect for damping materials. POLYM. ENG. SCI., 60:61–70, 2020. © 2019 Society of Plastics Engineers
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2019
·Vol. 60
·期 3
·446-454
·
IF 1.92
Kangming Xu,Hongdi Zhou,Qiaoman Hu,Junhui Wang,Yue Huang,Jinlei Chen
For hindered phenol (HP)/polymer-based hybrid damping materials, the unclear relationship between the structure of HP and the damping properties limits the application of such promising materials. Herein, three kinds of HPs with different chain lengths were synthesized to explore the mechanism. The structures of the HPs were confirmed by nuclear magnetic resonance spectrum, the Fourier Transform Infrared Spectroscopy (FT-IR), and X-ray Diffraction (XRD). For further prepared HP/polyurethane hybrids, FT-IR and XRD were adopted to confirm the hydrogen bonding interactions and micromorphologies. Moreover, molecular dynamics simulation was used to characterize the effects of chain length variation on the inter- and intramolecular hydrogen bonds (HBs) and the chain packing of the hybrids in a quantitative manner. Subsequently, combined with the dynamic mechanical analysis, the relationship between the chain length variation and the damping properties was established. The results showed that with the increasing of chain length, the intramolecular HBs between HPs can be prevented, and the loose HP chain within tight polymer matrix can be achieved, which results in a maximum increase of loss factor. While the homogeneity of the chain packing increases with the chain length increasing, which results in a decrease of the temperature range of loss factor ≥ 0.3. POLYM. ENG. SCI., 60:446–454, 2020. © 2019 Society of Plastics Engineers
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2022
·Vol. 62
·期 10
·3132-3143
·
IF 2.573
Xiao Wen,Junhuai Xu,Haibo Wang,Zongliang Du,Shuang Wang,Xu Cheng
Hydrogel-based electronic skin sensors often suffer from low mechanical properties, poor durability, and low temperature resistance. Herein, an ionogel was fabricated by casting the water-borne polyurethane (WPU) and 1-ethyl-3-methylimidazoliumdicyanamide (EMIM:DCA). The imidazolidinyl urea with multiple hydrogen bonds as chain extenders was introduced into WPU systems. Owing to the multiple hydrogen bonds, the ionogels exhibited good mechanical properties with a tensile stress of 1.45–12.09 MPa, a strain of 730%–860%, and good resilience. Moreover, the mechanical properties, conductivity, and sensing ability of the ionogels could be conveniently healed with the assistance of heat. EMIM:DCA endowed the ionogels with excellent ionic conductivity at room temperature (1.8–246 μS cm −1 ). In addition, due to the low vapor pressure of EMIM:DCA, the ionogel exhibited excellent anti-freezing property at −20°C. The ionogel can be assembled into a sensor to monitor the movements of human body with good responsiveness and stability.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）