Materials Today Chemistry
·
2022
·
IF 7.613
Caihong Lin,Huan Liu,Wen Huang,Zhifeng Shi,Lin Wang,Yunhua Chen,Junzhong Yang,Gang Wu,Yong-Guang Jia
Currently, self-healing polymers with superior elasticity have made great progress in healthcare devices and flexible electronics. Benefiting from rigid skeletons and hydroxyl groups of bile acids, herein sustainable self-healing polyurethanes have been developed via an alternative metal-free strategy in which bile acid units and oligo(ethylene glycol)s serve as hard and soft segments, respectively. The bile acid based polyurethane could achieve a similar mechanical performance (7.96 MPa of Young's modulus) to certain soft tissues and maximum self-healing efficiency of 90% in tensile strength for 3 h. Multiple hydrogen bonds originated from hydroxyl groups of bile acids and urethane bonds synergistically attribute to self-healing ability, which represents the first example that quadruple hydrogen bonds of sustainable molecules driven elastomers have been reported. Moreover, taking into account the desirable biocompatibility both in vitro and in vivo , it is highly anticipated that these sustainable metal-free self-healing polyurethane elastomers would be explored for practical applications, such as soft tissue repairing.
研究领域:
材料科学
·
生物医学工程
·
化学
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2022
·
IF 3.662
Kaiqiang Zhang,Yong Zhu,Yanfeng Gao
Superhydrophobic surfaces have been extensively used in antifouling, energy storage, metal corrosion and oil-water separation. However, problems caused by using organic solvents in the preparation process and poor durability still limited its application. In this paper, a kind of durable superhydrophobic (water contact angle>156°, sliding angle <10°) and superoleophilic fabrics have been fabricated based on a waterborne solution using polydimethylsiloxane, fluorosurfactant as low surface energy substances. The superhydrophobic performance of fabrics show intelligent self-healing property after plasma treatment, abrasion and machine washing for 10, 1000 and 100 cycles, respectively. Besides, the coated cotton fibers also exhibit excellent durability and long-term stability under extreme acidic/basic conditions.
研究领域:
材料科学
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Jiaqi Li,Fengqing Zhang,Haibin Nu,Chao Zhou,Guangfeng Wu
Flexible strain sensors capable of detecting minute mechanical signals and easily adaptable to various irregular surfaces have garnered significant interest for applications in structural health monitoring, early detection, and failure prevention. As state-of-the-art smart materials, these flexible strain sensors should possess highly sensitive sensing capabilities, prolonged durability, and the ability to self-repair. In this study, 1,8-diamino-P-menthane (MD) is incorporated into a waterborne polyurethane (WPU) backbone to induce a microphase separation structure that balances mechanical properties while enhancing self-healing capabilities through hydrogen bonding. Consequently, a blend of self-healing WPU, MXene, and AgNW was employed to fabricate composite conductors featuring an asymmetric continuum structure that exhibits exceptional electrical conductivity and self-healing properties. The distinctive laminate architecture of MXene enables the sensitive detection of signals generated by both bending and tensile deformation (up to 400 %).
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Qihai Wang,Zhifeng Luo,Xiaoli Ren,Haoran Fu,Quan Zhou,Keyou Chen,Shenwen Fang
Adhesive hydrogels frequently demonstrate poor mechanical properties; therefore, it is still challenging to integrate excellent adhesiveness and self-healing properties in one hydrogel. In this work, adenine and thymine were modified by grafting double bonds and then introduced into the structure of the polyacrylamide gel together with N, N′-methylene bisacrylamide (MBA) using a hybrid crosslinking strategy, and then a series of hybrid cross-linked hydrogels with adhesiveness and self-healing properties were successfully prepared. The hybrid crosslinking hydrogel exhibited a tunable adhesive performance and strength, by varying the content of base pairs, monomer concentration, cross-linker concentration, and initiator concentration. The recommended synthesis conditions for the P(AM-mAT) hydrogel were as follows: mA-mT concentration of the total monomer weight 5 wt%, total monomer concentration of 25 wt%, crosslinker (MBA) concentration of 0.5 wt%, and initiator APS concentration of 1.25 wt%. Under optimal conditions, the gel synthesized showed a hardness of 282 g and an adhesive force of 154.5 g. This hydrogel material exhibited excellent adhesion properties to materials such as plastics, glass, metals, and wood, with the best adhesion observed on glass.
研究领域:
材料科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Jiahao Du,Huan Wang,Zhiyi Huang,Xiaochun Liu,Xinshan Yin,Jianxin Wu,Wenjing Lin,Xiaofeng Lin,Guobin Yi
Lignin is a natural polymer with abundant functional groups with great application prospects in lignin-based polyurethane elastomers with self-healing abilities. In this study, a lignin self-healing polyurethane (PUDA-L) was specially designed using lignin as the raw material of polyurethane, combining lignin with Diels-Alder (DA) bond and hydrogen bonds . The experimental results showed that PUDA-L was prepared with good thermal stability , fatigue resistance, shape memory effect, excellent mechanical strength, and self-healing ability by partially replacing the crosslinking agents with bio-based lignin and hydroxylated modified lignin to increase the hydroxyl content. Polyurethane has a tensile strength of up to 29 MPa and an elongation at break of up to 500 %. The excellent self-healing ability of PUDA-L originates from the internal DA bonds and cross-linked hydrogen bonds. After the dumbbell sample was fused and heated at 130 °C for 4 h, the elastomer could be completely healed, the tensile strength was restored to 29 MPa, and the self-healing efficiency was up to 100 %. The developed PUDA-L elastomer has promising applications in sensors and smart skins.
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
RSC Advances
·
2024
·Vol. 14
·期 5
·2993-2999
·
IF 3.9
Bin Li,Haiying Liu,Mengjing Zhou,Aolin Wu,Wenrui Hao,YaJun Jiang,Zhigang Hu
Deep eutectic solvents (DES) were prepared using urea (U) and acrylamide (AM) as hydrogen bond donors (HBD) and choline chloride (ChCl) as hydrogen bond acceptor (HBA), and polyethylene glycol (PEG) was selected as a filler and uniformly dispersed in DES to prepare PEG/P(U-AM-ChCl) composite hydrogels by light polymerization. The composite hydrogels were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The effects of the content of PEG on the swelling properties, mechanical properties and fatigue resistance of the composite hydrogels were investigated. The results showed that the compressive strength and fatigue strength of the composite hydrogels were gradually enhanced with the increase of the PEG content in the composite hydrogels, in which the maximum compressive strength of the hydrogels with 1 wt% PEG added was increased by 1.86 times. The composite hydrogel had excellent swelling properties, and the equilibrium swelling degree of the hydrogel with 1 wt% PEG added reached 10.15. Meanwhile, the PEG/P(U-AM-ChCl) composite hydrogel had excellent self-healing properties, and the self-healing rate of the composite hydrogel with a PFG content of 1 wt% could reach 91.93% after 48 hours of healing. This study provides a convenient and efficient method to prepare composite hydrogels with superior swelling properties and self-healing properties.
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
CORROSION SCIENCE
·
2024
·
IF 7.4
Chunchao Chen,Xiang Gao,Boyu Yuan,Chao Wang,Juan Qiu,Kangwei Gongsun,Ke Lu,Houyi Ma
A smart means to achieve the harmless treatment of corrosive Cl – have been proposed for protecting brass. In this method, intelligent self-healing nanofilms based on the interlayer anion exchange properties of LDHs in situ grow on brass surfaces. The Cl – ions replace the BTA – loaded between LDHs interlayers to induce self-healing, as the binding energy of Cl – is lower than that of BTA – , obtained from theoretical calculations. The simultaneous application of electrochemistry and digital holography technologies confirmed that the constructed film has high instantaneous corrosion inhibition efficiency (99.9 %), long-lasting corrosion resistance, and self-healing ability (50 days).
研究领域:
材料科学
·
电化学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Bo Zhou,Man Yuan,Hao Lu,Xiaoyan Qiu,Jize Liu,Zhong Zhao,Xinxing Zhang,Guangming Cai
Fiber-based multimodal sensors with electrical/optical signals are highly desired for next-generation wearable electronics. Despite the remarkable progress in this area, achieving large-scale knittable, washable, and self-healing performance in fiber-based multimodal sensors simultaneously remains a great challenge. Here, a smart fiber capable of exhibiting piezoresistive/luminescent properties based on an H-bonding connected multilayered core–shell nanostructure is developed. The core principle of this design involves constructing strong interfacial interactions between the fiber layers, which results in a sensor with high sensitivity (gauge factor = 12383500), exceptional water resistance, and robust self-healing properties (tensile strength 30.9 MPa, healing efficiency 72.9%). Unlike traditional fiber-based sensors where elaborate nanostructures are prone to shedding during knitting, this strategy enables the fiber sensors with excellent knittability to be patterned in the fabric, improving both optical and electrical sensitivities. This work is anticipated to make a significant contribution to the further development of wearable electronic products and visual human–computer interaction electronic devices.
研究领域:
材料科学
·
电子工程
·
可穿戴设备
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2022
·Vol. 33
·期 8
·2528-2541
·
IF 3.348
Lijun Chen,Sui Wang,Zhiyong Guo,Yufang Hu
Hydrogels with excellent self-healing properties have specific applications in smart polymer materials, but they often do not have excellent mechanical properties, or the preparation process of hydrogels is too complicated. Here, we prepared a multi-functional intelligent hydrogel using a simple water bath one-pot method through the synergistic effect of dual dynamic cross-linked agents, including acylhydrazone bonds (the first cross-linked agent) and borate ester bonds (the second cross-linked agent), at the same time hydrogen bonds provided physical interaction. The hydrogel exhibited excellent self-healing ability (up to 91%) and extraordinary mechanical strength (tensile stress 173.1405 kPa and hysteresis energy of 1.8659 MJ m −3 ). The research used chemical cross-linked (acylhydrazone bonds and borate ester bonds) and physical cross-linked (hydrogen bonds). The prepared hydrogel had the dual advantages of excellent self-healing performance and high mechanical strength. The hydrogel can be used in smart materials, such as working pressure tissues and sensing materials that require a certain degree of mechanical strength and self-healing properties, and also provides a design strategy for preparing hydrogels with high mechanical strength and excellent self-healing properties.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Gangrong Wang,Zhuo Chen,Xin Jing,Xijian Yi,Jian Zou,Peiyong Feng,Hailiang Zhang,Yuejun Liu
Although conductive hydrogels have been widely developed currently, their low sensitivity and poor stability severely limited their practical application in flexible wearable devices. Herein, a green “stencil” anchoring strategy was proposed in this study to engineer an ultra-stable and supersensitive hydrogel by virtue of polydopamine decorating sodium alginate molecular chains as “stencil” to anchor polyaniline as conductive component. The dispersion of polyaniline was significantly improved by the sodium alginate “stencil” in the conductive hydrogel. The developed conductive hydrogel exhibited outstanding properties that outperformed most conventional ones, including extraordinary sensitivity with a gauge factor of 38.2 and excellent stability with negligible shifting upon long-term cyclic stretching. Moreover, the conductive hydrogel displayed great self-adhesion and reliable self-healing performance endowed by its abundant catechol groups, hydrogen bondings and π-π stackings, respectively. Furthermore, the prepared hydrogel was also assembled as flexible strain and self-powered sensors, which displayed excellent sensing performance, indicating great potential in human-machine interactions, information transmission and road transportation.
研究领域:
材料科学
·
生物医学工程
·
柔性电子
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2021
·
IF 4.089
Shui Yu,Hongli Zuo,Xiaowei Xu,Nanying Ning,Bing Yu,Liqun Zhang,Ming Tian
The construction of silicone elastomers with mechanical strength and a self-healing property can be verified as an effective method by multiple dynamic bond strategies. However, it means that some complex synthesis strategies or small molecules with specific chemical structures are required. So, it is more challenging to construct a kind of polymer matrix with two kinds of interactions by matured methods directly. Herein, we report a dynamic silicone elastomer with two kinds of interactions that was prepared by incorporating a “carboxyl-amino ionic bond” and “carboxyl-Al3+ coordinated ionic bond”. The carboxyl groups are bonded with amino groups and Al3+ ions to form common ionic bonds and coordinated ionic bonds, respectively. The coexistence of these strong and weak ionic synergistic interactions was verified by setting several experiments in spectroscopic analysis and mechanical tests. It was indicated that the carboxyl-Al3+ interactions can improve the mechanical property of this material effectively, while the dense common ionic network between carboxyl and amino groups can maintain the integrity of the dynamic cross-linking network, which may ensure the good recoverability and self-healable ability of the silicone elastomer. Compared with the control samples based on single ionic bonds, the hybrid network exhibited the better mechanical property with an optimistic tensile strength of ∼0.73 MPa and elongation at breaking of ∼548%, and the network also exhibited a good autonomous self-healing ability at a higher temperature (8 h, 80–136% at 60 °C) and a considerable recoverability at a large scale of stretching (∼70% of elongation at break) with a moderate low hysteresis ratio of only 28.7%. We expect this strategy would be beneficial for the expansion of a convenient way of mixing to prepare elastomers with a synchronous mechanical property and self-healing performance by multiple dynamic bond strategies.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2021
·Vol. 4
·期 1
·138-149
·
IF 5.693
Liu Chao,Yin Qing,Li Xi,Hao Lifen,Zhang Wenbo,Bao Yan,Ma Jianzhong
Water-based polymers have been widely used in coating materials, but their durability and service life are often greatly reduced due to macroscopic damage or cracking caused by external forces. In this paper, poly(propylene glycol) terminated with ortho-amiomethylphenyl diboronic acid (AMPBA-PPG) and cross-linked polymer containing boroxine (CLP-boroxine) were synthesized by nucleophilic substitution. Then the CLP-boroxine was introduced into waterborne polyurethane (WPU) to prepare AMPBA-PPG/WPU composite emulsion for leather finishing and CLP-boroxine/WPU composite film. The self-healing characterization results showed that the self-healing efficiency of the 15 wt% CLP-boroxine/WPU film was as high as 93.6% after only 4 h of water stimulation at room temperature. Compared with neat WPU finished leather, the leather samples finished with AMPBA-PPG/WPU exhibited more excellent wear-resistance. More importantly, the leather coating finished with AMPBA-PPG/WPU still showed nice wear-resistance even after wear and self-healing treatment. These results are attributed to that the hydrogen bonds between AMPBA-PPG and WPU, WPU, and WPU, and the dynamic reversible covalent bonds in AMPBA-PPG can improve/increase the self-healing efficiency of the composite coating. In addition, the boron hydroxyl groups in AMPBA-PPG could also react with the hydroxyl groups on the leather surface, thereby further improving the wear-resistance of the leather coating. Graphical abstract Dynamic boronate ester bonds can not only endow WPU excellent self-healing properties but also improve wear-resistance of its leather coating.
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
危险品化学品经营许可证（带存储）