JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2012
·Vol. 51
·期 5
·1205-1214
·
IF 3.919
Xinjian Cheng,Cheng Peng,Daohong Zhang,Shuzheng Liu,Aiqing Zhang,Hui Huang,Jiansheng Lian
Novel cross-linked polyphosphazenes with remendable capacity have been synthesized through the Diels-Alder reactions. Their structure and properties were characterized by NMR, FT-IR, GPC, DSC, TGA SEM, and polarizing microscope. The process of Diels-Alder reaction (D-A reaction) and retro-Diels-Alder reaction (retro-D-A reaction) have been investigated by FT-IR, UV, and DSC. The cross-linked polyphosphazenes exhibited remendable capability only need a thermal treatment when they were cut by blade, any other treatments such as additional monomer or catalyst, surface treatment or pressure were not needed. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2013
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2024
·Vol. 16
·期 21
·3045
·
IF 4.7
Hairui Wang,Lan Cao,Xiaolei Wang,Xiurui Lang,Wenwen Cong,Long Han,Hongyu Zhang,Huibin Zhou,Jujie Sun,Chengzhong Zong
Polyurethane (PU) plays a critical role in elastomers, adhesives, and self-healing materials. We selected the most commonly used aromatic isocyanates, 4,4′-methylene diphenyl diisocyanate (MDI) and tolylene-2,4-diisocyanate (TDI), and the most commonly used aliphatic isocyanates, hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), and dicyclohexylmethane-4,4′-diisocyanate (HMDI), as raw materials, combined with polytetramethylene ether glycol (PTMG) and 1,4-butanediol (BDO) to successfully synthesize five PU materials. The effects of isocyanate structure on polymerization rate, hydrogen bonding, thermal properties, phase separation, wettability, self-healing performance, adhesion, and mechanical properties were systematically investigated. The results show that isocyanates with higher symmetry facilitate hydrogen bonding, but excessive flexibility and crystallinity may inhibit its formation. MDI-based PU exhibits the highest hydrogen bonding index (HBI) of 4.10, along with the most distinct phase separation and the highest tensile strength of 23.4 MPa. HMDI-based PU demonstrates the best adhesion properties, with the highest lap shear strength of 7.9 MPa, and also exhibits excellent scratch healing ability. IPDI-based PU shows good self-healing performance, recovering 88.7% of its original tensile strength and 90.6% of its original lap shear strength after heating at 80 °C for 24 h. Furthermore, all the samples can be reprocessed by melt or solution methods, showing excellent recyclability.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 4
·1-14
·
IF 2.8
Xian Changqing,Deng Tao,Sun Bocun,Yang Wenbo,Li Boyan,Li Youbing,Xia Tian,Yang Chaolong,Yang Yi
Self-healing polyurethanes are garnering attention as a smart material, and has significant application potential in aerospace, biomedical, and electronics fields. In this paper, castor oil is selected as a soft segment in place of petroleum-based polyol to enhance the mechanical properties of polyurethane while improving the mobility of molecular chains. Meanwhile, a polyurethane with good self-healing properties was successfully prepared by selecting 2,2`-Diaminodiphenyl disulfide (DTDA) containing disulfide bonds as a chain extender. As the proportion of DTDA increases, the initial thermal decomposition temperature of polyurethane decreases by 21°C. Cutting and tensile tests confirmed the high mechanical properties and self-healing characteristics of the polyurethane network. And the self-healing efficiency of the polyurethane materials was improved by prolonging the healing time and increasing the healing temperature. As the content of disulfide bonds and hard segments increased, the tensile strength of polyurethane increases progressively, the elongation at break decreased, and the R(stress) and R(strain) of each specimen tended to increase and then decrease. The healing efficiency of the specimen with a disulfide bond content of 13.45% was optimal, with both R(stress) and R(strain) reaching more than 99%.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2018
·Vol. 5
·期 20
·1800571
·
IF 4.834
Hao Chang,Rui Guo,Ziqiao Sun,Hongzhang Wang,Yi Hou,Qian Wang,Wei Rao,Jing Liu
Liquid metals such as gallium and its alloys can be printed on various substrates to form electronic circuits. However, up to now there are still few methods for the direct writing of liquid metals on common printed paper. Here, a novel conductive material prepared by adding metal powder to a gallium alloy is introduced. The proposed material exhibits low liquidity, excellent plasticity, significantly enhanced adhesivity to paper substrates, which guarantee the stable and flexible electrical connection. The oxide film wrapping the nickel powder forms a skeleton for additional oxidation products, resulting in superior adhesion to paper. In addition, several paper flexible electronic applications are showcased to demonstrate the practical value and reparability of this material. This work paves the way for the design of a facile method of preparing paper electronics.
研究领域:
材料科学
·
柔性电子
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Surface Topography-Metrology and Properties
·
2022
·Vol. 10
·期 4
·045004
·
IF 2.185
Fuliang Ma,Luli Shen,Zhixiang Zeng
In recent years, the development of the slippery liquid-infused porous surface (SLIPS) for metal corrosion protection has attracted extensive attention. The current construction method of SLIPS micro-nano structure has certain limitations. In this paper, a porous structure was firstly constructed by electroplating nickel based on the hydrogen bubble template method, and then the porous structure was modified by 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (PFDS) to obtain the superhydrophobic coating, and finally, The SLIPS coating was obtained by infusing perfluoropolyether (PFPE) on the basis of superhydrophobic coating. After immersed in 3.5 wt% NaCl solution for 4 weeks, the WCA of SLIPS constructed in this paper only decreased from 121° to 114°. Importantly, the corrosion resistance of SLIPS was enhanced by one and three orders of magnitude compared with SHC and Cu substrate. In addition, it was worth mentioning that the SLIPS also exhibited a superior self-healing property even after several scratching healing cycles. The simple method of building porous structures in this paper will promote the further development of the SLIPS coating and its application in engineering.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
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2019
·Vol. 28
·期 2
·647-656
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IF 2.765
Feng Libang,Bian Yaohui,Chai Changsheng,Qiang Xiaohu
Given its thermal reversibility, high yield, and minimal side reactions, the Diels–Alder (DA) reaction is a particularly desirable technique for the preparation of polymeric materials with heat-stimulated self-healing properties. A linear self-healing polyurethane containing thermally reversible DA bonds (PU-DA) was developed in this study. Results revealed that the introduction of DA bonds conferred outstanding mechanical property and thermal reversibility to PU-DA films. Thus, the as-prepared PU-DA films demonstrated excellent self-healing performance. The self-healing behavior of the PU-DA films under various heat treatments was examined through qualitative observation and quantitative measurements. The PU-DA underwent self-repair through the combination of two healing actions, i.e., the thermal movement of molecular chains and the thermally reversible DA reaction. Moreover, the self-healing behavior of the PU-DA was repeatable, and the PU-DA continued to present high strength even after undergoing three damage–repair cycles at the same site. In addition, the as-prepared PU-DA exhibited excellent macro-scale self-healing behavior, and it endowed the PU-DA presented reprocessing performance. The PU-DA can be recycled given its excellent self-healing and outstanding reprocessing performances.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Miao Yuan,Saidan Wang,Hongxia Du,Yating Sui,Xiangjing Zhang,Song Zhao,Qiushi Li,Shaojie Liu,Xuteng Xing,Erjun Tang
Two-dimensional Ti 3 C 2 T x MXene, with a large specific surface area, high chemical stability and excellent barrier properties, has become a promising of anti-corrosion filler in organic coatings. However, the poor dispersion and compatibility in organic coatings restrict its efficient application. To this end, L-histidine (L-His) corrosion inhibitor was grafted on the 3-aminopropyl triethoxysilane (APTES) functionalized Ti 3 C 2 T x MXene surface, under the electrostatic attraction between the carboxylate and protonated aminopropyl groups. The obtained APTES-Ti 3 C 2 T x MXene@L-His cannot only accelerate the dispersion of Ti 3 C 2 T x MXene filler, but also greatly promote the anti-corrosion property and service lifetime of coatings through combining the physical shielding effect of MXene laminate structure with active anti-corrosion function of L-His corrosion inhibitor. Results show that amino-functionalized Ti 3 C 2 T x MXene can maintain homogeneous in epoxy resin for 300 h, enhancing its dispersion in epoxy coating. Moreover, APTES-Ti 3 C 2 T x MXene@L-His composite can achieve the continuous release of L-His for 3000 min, and additional acid-base dual response property, the releasing rate of L-His is significantly accelerated in acidic or alkaline solutions. The total loading amount of L-His in APTES-Ti 3 C 2 T x MXene@L-His composite is about 3 %. Furthermore, the practical composite coating containing APTES-Ti 3 C 2 T x MXene@L-His also exhibits the excellent anti-corrosion and certain self-healing properties, such as its |Z 0.01 Hz| value remains above 10 10 Ω·cm 2 during the 40 d immersing in 3.5 NaCl solution, which is 3 orders of magnitude higher than that of pure epoxy coating. This work extends the great significance for Ti 3 C 2 T x MXene based composite coatings application of in the field of anti-corrosion.
研究领域:
材料科学
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腐蚀与防护
·
有机涂层改性
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2018
·Vol. 136
·期 6
·47039
·
IF 1.901
Shan Cao,Shouhai Li,Mei Li,Lina Xu,Haiyang Ding,Jianling Xia,Meng Zhang,Kun Huang
Phenolic hydroxyl gave thermal self-healing ability to phenolic polyurethanes in our previous study. To explore, the feasibility of preparing self-healing polyurethanes through polyphenols with different substituents. Urushiol, propyl gallate, catechol, and tert-butylhydroquinone were chosen for preparation of four phenolic polyurethanes, and the different factors at the structures of these polyphenols worked together led the different properties and self-healing ability. The peak temperatures of these four polyurethanes were determined by DSC in the following order: PTHFTDI-Urushiol < PTHFTDI-Catechol < PTHFTDI-Propyl gallate < PTHFTDI-Tert-butylhydroquinone. Variable-temperature FT-IR spectra displayed that PTHFTDI-Propyl gallate with electron-withdrawing substituent exhibited the lowest decomposition and healing temperatures. Meanwhile, based on TGA analysis, lower decomposition temperature suggested lower thermostability; and PTHFTDI-Urushiol with electron-donating substituent exhibited the best thermostability. At the same temperature, the healing abilities of the three polyurethanes were ranked as follows: PTHFTDI-Catechol < PTHFTDI-Urushiol < PTHFTDI-Propyl gallate. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47039.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 11
·2212564
·
IF 19
Jiaoyang Chen,Yuhong Ma,Tao Chen,Yingjie Du,Jianhua Xu,Dong Wang,Jing Yang,Po Hu,Jiajie Jing,Bowen Yao,Jiajun Fu
Supramolecular plastics (SMPs) can be made mechanically robust, repairable, and recyclable, rendering themselves promising alternatives to their conventional predecessors to address environmental concerns. However, dense accumulations of noncovalent bonds generally lead to mechanical brittleness as well as intolerance toward heat and moisture. To resolve this issue, a simple strategy of preparing high-performance SMP by constructing highly dense, but irregular hydrogen-bond networks with hierarchical structures is proposed. The resultant SMP exhibits an outstanding combination of good comprehensive mechanical properties (high stiffness, strength, and toughness with ductile failure when fracturing), excellent dynamic behaviors (repairability and recyclability), and high tolerances toward moisture and high temperatures (as high as 90 °C). Additionally, the SMP also shows a high dielectric constant, exhibiting great potential for applications such as healable flexible touch screens and energy storage. Last, through structure characterizations and molecular dynamic simulation, this study provides a fundamental insight into the mechanism behind such high-performances from nano- to micro-scales, which is expected to inspire the design of a wide range of other SMPs that use different chemistries.
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
LANGMUIR
·
2021
·
IF 3.882
Chenyi Cui,Yafei Cao,Baojin Qi,Jinjia Wei,Jia Yuan,Ya Wang
Superhydrophobic surfaces are widely used in industry and daily life, yet their practical application is limited by their complicated preparation process, high cost, and poor repairability. We propose a low-cost, facile process for preparing superhydrophobic surfaces to address this limitation. Through a simple three-step spraying process, the rough structure was first constructed on the aluminum alloy, and upon modification by modifier, the superhydrophobic aluminum alloy surface was successfully prepared. The effect of the process parameters on wettability was experimentally studied. The results showed that this method can obtain superhydrophobic surfaces with a contact angle of 156.2° and contact angle hysteresis of 7.4° by simply adjusting the etching time and modifier concentration. In addition, it was found that the prepared surface can keep the superhydrophobic property unchanged at 180 °C, showing good thermal stability. When immersed in acetic acid and sodium hydroxide solution, the prepared surface can maintain its superhydrophobicity for about 2 days, showing good chemical stability. Besides, the surface has excellent repairability and can compensate for the short-life defects caused by poor friction resistance. This superhydrophobic surface with a simple preparation process, low cost, and excellent repairable characteristics also has excellent self-cleaning, antifogging, and antifrosting applications.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2024
·
IF 7.7
Shenghui Liu,Jintuan Zhang,Anette Theliander,Weibin Chen,Junyong Wu,Leixin Wu
Based on the dye/salts separation efficiency and membrane injury caused by serious pollution of dye/salts wastewater, this study constructed a 2D tight ultrafiltration membrane that could both solve the membrane injury problem and improve the dye/salts separation efficiency, the compatibility of good self-healing performance and penetration performance by 2D material magnesium-aluminum Layered double hydroxide (MgAl-LDH). The self-repairing of physical injury was achieved through the swelling effect of AMPS-PAN, this property was proved by permeate flux, the retention performance of salts in dye/salts solution, the comparison of scanning electron microscope (SEM), and the mechanical strength after physical injury. The healing of chemical injury occured through the reaction of C C and polyethersulfone chain breakage, which was confirmed by X-ray photoelectron spectroscopy (XPS), permeate flux, the retention performance of salts in dye/salts solution, and mechanical property. The high separation efficiency of dye/salts was achieved through 2D material MgAl-LDH, which was proved by separation selectivity ɑ. The compatibility of good self-healing performance and penetration performance was obtained by 2D material MgAl-LDH, which was proved by the penetration and self-healing performance. Morever, the membrane illustrated excellent both permeability and dye/sals separation efficiency, just like the permeate flux, the retention performance of sodium sulfate in methyl blue/sodium sulfate solution, the retention performance of Na 2 SO 4 in methyl blue/Na 2 SO 4 solution, the retention rate of methyl blue were 99.1 L/m 2 h, 12.5%, 7.9%, 97.7%, respectively. The results of pollution index and contact angle also proved that the membrane had anti-pollution performance.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Maolin Liu,Yuanfang Luo,Demin Jia
Versatile composite materials integrating extreme water repellency with a series of characteristics have been seen as potential competitors for innovative applications. In this work, the author designs a three-dimensional superhydrophobic composite material (TSCM) featuring robustness and repairability by utilizing organic polymer components, polydimethylsiloxane (PDMS), and epoxy acrylate (EPA) and inorganic component, silica particle (SiO 2 ). The bulk deposition and construction preparation method enables the TSCM to exhibit a special three-dimensional superhydrophobic property with a contact angle of 161° and a sliding angle of 2°. Benefiting from the establishment of the covalently cross-linking polymer scaffolding, the TSCM is able to withstand multi-cycles mechanical damage (>150 cycles) and present a damage-insensitive performance. Due to the three-dimensional superhydrophobic and roughness-regenerative characteristics, the TSCM also has the capability of repairing its deprived superhydrophobicity by a polishing procedure (>30 cycles), distinguishing the depletion of healing agents. Most importantly, the TSCM is used to exploit the aquatic light-reflective function of superhydrophobic materials for the first time. Desirably, on the basis of the aquatic light-reflective principle, not only the design control is realized but also the aquatic show is accomplished on each layer of the TSCM, which may widen the applications of superhydrophobic materials in various progressive and intelligent fields, such as deep-sea exploitation, undersea transportation, and aquatic decoration. Our studies convincingly show that this is a worthwhile approach to invent versatile composite materials featuring three-dimensional superhydrophobicity, robustness, and repairability for innovative applications.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）