CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yabing Tian,Xuezhen Feng,Jing Wang,Shibin Shang,Fang Liu,Jianxin Jiang,Haibo Zhang,Yuxiang Chen,Zhanqian Song
Designing degradable foams with excellent Joule heating and electromagnetic interference (EMI) shielding properties are crucial for protecting both the environment and low-temperature sensitive electronic devices. In this work, we used 1,3-diaminopropane carbamate (DPC) as a latent foaming-curing agent to prepare soft-hard tunable, degradable bio-based epoxy foams through one-step chemical foaming method. Subsequently, using F3 foam with outstanding reversible compressibility as the substrate, we developed a silver-plated foam, F3A3, with predominantly reflective and high EMI shielding performance via silver mirror reaction. The silver-plated foam F3A3 exhibited an electromagnetic interference shielding effectiveness (EMI SE) of 76.37 dB in the X-band (8.2–12.4 GHz), achieving a shielding efficiency as high as 99.99999%. Additionally, under an input voltage of 1.0 V, the surface saturation temperature of F3A3 rapidly increased from room temperature to 104.0 °C and demonstrated excellent stability and durability in low-voltage Joule heating. Due to the presence of dynamic ester bonds and tertiary amine structures in the F3A3 foam, it exhibited catalyst-free self-healing capability. These superior properties make the silver-plated foam highly promising for applications in military equipment, aerospace, and wearable electronic devices.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2020
·Vol. 22
·期 4
·1275-1290
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IF 9.48
Binbo Wang,Songqi Ma,Qiong Li,Hua Zhang,Junjie Liu,Rong Wang,Zhiquan Chen,Xiwei Xu,Sheng Wang,Na Lu,Yanlin Liu,Shifeng Yan,Jin Zhu
Plastics are indispensable in modern society, but are non-sustainable resources, releasing hazardous chemicals during their service life, and post-disposal issues make traditional plastics a risk. Herein, we report a “digestible”, rigid-and-flexible, bio-sourced building block for high-performance degradable plastics. This building block was synthesized from the bioresources vanillin (lignin derivative) and glycerol through solvent-free acetalization with a high conversion rate and high selectivity. It could be extremely rapidly degraded into non-toxic vanillin and glycerol under mild acidic conditions even at a similar pH and temperature to gastric juice in the human stomach (“digested”), resulting in the outstanding chemical degradability of its corresponding epoxy thermosets, which is beneficial for their recycling. By virtue of the benzene ring, heterocycle, and methoxyl group-related hydrogen bond, the degradable thermosetting plastic showed much higher mechanical properties (stronger and tougher) and comparable thermal properties relative to a commercial high-performance counterpart based on bisphenol A (BPA). This favorable performance combination has never been reported for plastics. Thus, this bio-derived building block exhibits great potential as a sustainable and upgraded alternative to petroleum-sourced aromatic chemicals such as BPA for high-performance plastics.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
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IF 4.4
Hongtao Zhu,Shifeng Zhang,Yongjun Chen,Xuejun Lai,Jianping Ding,Hongqiang Li,Xingrong Zeng
Flexible strain sensors have attracted great attention for their important application potential in soft robot, wearable device, electronic skin, and human–computer interaction, yet there are still challenges such as the loss of service life by external force and produced electronic waste that need to be solved. Herein, a self-healable, degradable, and reprocessable lignin-based polyurethane (LPU) elastomer was synthesized for a flexible strain sensor. Owing to the formation of a cross-linking network by lignin and the reinforcement role of unreacted lignin, the tensile strength and elongation at break of the LPU elastomer reached 2.72 MPa and 712%, respectively. The plentiful hydrogen and disulfide bonds endowed the elastomer with not only good self-healing capability but also superior reprocessing performance. Importantly, the elastomer was able to be completely degraded within only 2 h in 1 mol L–1 NaOH water/ethanol solution. The LPU elastomer-based flexible strain sensor with liquid metal (LM) as the conductive material was successfully applied to detect various human motions and could restore its sensing function with the healing of the substrate and reconnection of the LM conductive layer. Moreover, the LM in the discarded sensor could be easily recycled to prepare the sensor after the degradation of the LPU substrate. The functional and environmentally friendly biobased elastomer will greatly promote the sustainable development and application of flexible electronics.
研究领域:
材料科学
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环境科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Changzhou Du,Hongjian Zhang,Xiaofei Liu,Shengyang Zhou,Yanan Ma,Shuxuan Li,Yong Zhang
Flexible pressure sensors are intensively demanded in various fields such as electronic skin, medical and health detection, wearable electronics, etc. MXene is considered an excellent sensing material due to its benign metal conductivity and adjustable interlayer distance. Exhibiting both high sensitivity and long-term stability is currently an urgent pursuit in MXene-based flexible pressure sensors. In this work, high-strength methylcellulose was introduced into the MXene film to increase the interlayer distance of 2D nanosheets and fundamentally overcome the self-stacking problem. Thus, concurrent improvement of the sensing capability and mechanical strength was obtained. By appropriately modulating the ratio of methylcellulose and MXene, the obtained pressure sensor presents a high sensitivity of 19.41 kPa–1 (0.88–24.09 kPa), good stability (10000 cycles), and complete biodegradation in H2O2 solution within 2 days. Besides, the sensor is capable of detecting a wide range of human activities (pulse, gesture, joint movement, etc.) and can precisely recognize spatial pressure distribution, which serves as a good candidate for next-generation wearable electronic devices.
研究领域:
材料科学
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电子皮肤
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Ao Li,Jun Xu,Dezhong Xu,Zhaohui Zhang,Daxian Cao,Jun Li,Wei Zhang,Fengshan Zhang
High-performance flexible piezoresistive pressure sensors have garnered considerable attention for health monitoring and medical diagnostics. However, achieving both high sensitivity and a wide detection range is often limited by complex, costly microstructural designs. Furthermore, the non-degradability of many sensing materials poses environmental challenges. Here, we present an innovative, flexible, fully degradable pressure sensor based entirely on cellulose-based paper and MXene. Utilizing a cost-effective dip-coating method, MXene was uniformly deposited onto cellulose-based paper substrates with six distinct fiber microstructures, including natural fibers (cellulose I) and viscose fibers (cellulose II), forming a conductive sensing layer. The sensor, featuring a sandwich structure with the core sensing layer and cellulose paper-based encapsulation layers, demonstrates high sensitivity (36.87 kPa − 1for 0–1.3 kPa), 11.39 kPa − 1 for 1.3–60 kPa, 1.25 kPa − 1 for 60–79 kPa), a wide pressure range (0–79 kPa), a lower detection limit (3.7 Pa), and fast response/recovery times (113 ms/81 ms). The sensor also shows excellent cyclic stability and can detect both dynamic and static pressures, making it suitable for monitoring physiological signals such as speech vibrations, finger movements, and wrist pulses. Significantly, this sensor is fully biodegradable under natural conditions within 58 days, offering an environmentally sustainable and cost-effective solution for the future of wearable electronics.
研究领域:
材料科学
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生物医学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2022
·Vol. 24
·期 19
·7519-7530
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IF 11.034
Penghao Sun,Siheng Wang,Zhen Huang,Lei Zhang,Fuhao Dong,Xu Xu,He Liu
Petroleum-based plastics are useful, but they pose a huge threat to the environment and human health. The development of sustainable cellulose paper materials with excellent mechanical and water-resistance properties to replace plastics is highly desirable but also challenging. Herein, we report a new kind of rosin-based modifier synthesized from fully hydrogenated rosin and (3-glycidoxypropyl)triethoxysilane, which can covalently bind with cellulose fiber networks to improve the hydrophobicity and weaken the capillarity of cellulose paper. The rosin-grafted cellulose composite paper shows a unique combination of water resistance (water absorption of 19.2% and 37.9% in 25 and 90 °C water, respectively) and high strength (tensile strength of 47.9 MPa and Young's modulus of 2.32 GPa). Moreover, the rosin-grafted cellulose composite paper can be completely degraded when buried in soil for up to 100 days, and it can be recycled when treated with an alkali. These impressive performances make rosin-grafted cellulose composite paper a promising eco-friendly alternative material to replace plastics in straws, boxes, cups, bags and so on.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2016
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IF 3.42
Weijiang Yu,Guohua Jiang,Depeng Liu,Lei Li,Hua Chen,Yongkun Liu,Qin Huang,Zaizai Tong,Juming Yao,Xiangdong Kong
To reduce the inconvenience and pain of subcutaneous needle injection, the calcium sulfate and gelatin biodegradable composite microneedle patches with high aspect-ratio microneedles (MNs) and a flexible substrate have been developed. The microneedles with an aspect-ratio approximate 6:1 exhibit excellent mechanical property which can achieve 0.4 N for each needle. The cross-section views show the inside of microneedles that have abundant pores and channels which offer potential for different drug-release profiles. The preparation procedures, degradable property for the biodegradable composite microneedle patches are described in the paper. Insulin, the drug to control blood glucose levels in diabetic patients, has been embedded into the biodegradable composite MNs. The hypoglycemic effect for transdermal delivery of insulin is studied using diabetic Sprague-Dawley (SD) rats as models in vivo . After transdermal administration to the diabetic rats, the released insulin from biodegradable composite MNs exhibit an obvious and effective hypoglycemic effect for longer time compared with that of subcutaneous injection route. This work suggests that biodegradable composite MNs containing of insulin have a potential application in diabetes treatment via transdermal ingestion.
研究领域:
生物医学工程
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药物递送系统
·
糖尿病治疗
✓ 已验证
DOI
高影响因子
Polymer Chemistry
·
2020
·Vol. 11
·期 25
·4164-4171
·
IF 5.342
Muhammad Waqas Ali,Zahir Muhammad,Qun Jia,Lianwei Li,Muhammad Saleem,Muhammad Siddiq,Yougen Chen
Cyclic poly(2-ethyl-2-oxazoline) (PEtOx) with a degradable disulfide bond has been synthesized by combining cationic ring opening polymerization (ROP) and reversible thiol/disulfide exchange chemistry. In greater detail, a living linear PEtOx with two cationic propagating terminals was initially synthesized using 1,3-bis(bromomethyl)benzene as a difunctional initiator. Both the living ends of PEtOx were then reacted with potassium ethyl xanthate to afford α,ω-xanthate end-functionalized PEtOx (xanthate-PEtOx-xanthate). The xanthate groups were then in situ cleaved using n-butylamine as a cleaving agent as well as a base in the same reaction media, which produced α,ω-thiol end-functionalized PEtOx (HS-PEtOx-SH). The cyclic polymer was eventually obtained by the successive intramolecular oxidation coupling of the thiol terminals of HS-PEtOx-SH to form a disulfide bond as a ring-closure link. For the polymeric information, 1H NMR spectroscopy, SEC spectroscopy, MALDI-TOF-MS, and UV-visible spectroscopy were combined to characterize the linear and cyclic polymers. Ellman's assay was used to determine the thiol content in the cyclic and thiol terminated polymers. Clean cyclic PEtOxs with number-average molar masses around 2000 (2 K) and 4000 (4 K) g mol−1 were obtained at an unreported high polymer concentration of 5 g L−1 (ca. 2.5 × 10−3 M for the 2 K polymer and ca. 1.25 × 10−3 M for the 4 K polymer) in THF. In addition, the synthetic route was compared with the intramolecular copper(I)-catalyzed azide–alkyne cycloaddition (CuAAC) reaction and proven to be more advantageous in terms of reactant concentration, yield, purification, and bonding reversibility.
研究领域:
高分子化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 35
·16730-16743
·
IF 3.553
Liu Mengzhu,Hao Xueyan,Wang Yongpeng,Jiang Zhenhua,Zhang Haibo
Abstract A sustained release system that composed of biodegradable core-sheath nanofibers in 3D hierarchy has been developed through electrospinning of water-in-oil precursor emulsion, in which theophylline dissolved in water was labeled as ‘aqueous phase’ and PLA solution was considered as ‘organic phase’. SEM images revealed that the fibers crossed and overlapped with each other, forming a 3D network-like structure. TEM indicated that the drug was well incorporated into PLA nanofibers, forming a core-sheath structure, which represented a reservoir-type delivery system. The fiber scaffolds were further characterized by FTIR, XRD, TGA, and DSC, which proved theophylline was successfully loaded into the fibers in an amorphous form. The release of drug consisted of three sequential stages, in which the release rate decreased successively. The changes on release rate were proved to be related to the drug diffusion and polymer degradation. At nearly 30 days, the drug still released continuously. This was accomplished by the gradually swelling and degradation of PLA. The successful preparation of the 3D core-sheath nanofibers can incorporate a water-soluble drug in a biodegradable polymer, which effectively protected the activity of the drug, inhibited a sudden release and accomplished sustained release. Graphic abstract
研究领域:
材料科学
·
药学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS & DESIGN
·
2021
·
IF 7.991
Xiang Li,Yifei Qu,Xiu Wang,Huiyang Bian,Weibing Wu,Hongqi Dai
Rubber and plastic are widely acted as substrates in flexible electromagnetic shielding (EMS) materials. However, these materials have several drawbacks in practical applications, such as potential environmental concerns and difficulties in degrading. In this work, a biodegradability paper-based material composed of electromagnetic wave loss layer (graphene/ silver nanoparticles (AgNPs) coating) and reflective layer (aluminum film layer) was successfully fabricated. The electromagnetic wave loss layer constructed three-dimensional (3D) electric conductive network to facilitate the timely transfer of electrons and heat energy obtained from electromagnetic waves. Meanwhile, the reflective layer received electrons and heat from the electric conductive network and make a small quantity of transmission wave back to the wave loss layer. The resulting material exhibited an ultrahigh electromagnetic interference shielding effectiveness (EMI SE) of 92.29 dB within 8–13 GHz, electrical conductivity of 4431 S/m, mechanical properties with a tensile strength of 32 MPa and elongation at break of 6.65%. Compared to the traditional EMS materials, the composite material integrated with excellent EMI SE, heat transfer performance, and weatherability, which has potential applications in microelectronics, high integrated circuits, and flexible electronic fields.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 7
·3924-3930
·
IF 4.036
Ting Zhang,Shasha Zhang,Zhenkun Gu,Rudai Zhao,Shiheng Wang,Lutong Guo,Tiesheng Li,Yiqiang Zhang,Yanlin Song
Paper is ubiquitous in the daily life and has been widely used for writing and drawing because of their low-cost, widely accessible, and degradable properties. However, simple ways to fabricate paper-based optoelectronic devices remain a great challenge. In this work, we report a facile method to fabricate high-quality perovskite films and optoelectronic devices on paper by direct pen-writing. Through introducing seed layers on papers, planar-integrated single-crystal perovskite films are easily prepared using commercial pens. Based on such a simple and convenient method, perovskite photodetector arrays and image sensors with graphite electrodes are fabricated on paper, and show satisfactory performances. This method provides a simple and effective approach for preparation of paper-based perovskite devices. It will be of significance for the development of degradable optoelectronic devices.
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 11
·2102426
·
IF 6.389
Peng Wang,Guoxian Li,Wei Yu,Chuizhou Meng,Shijie Guo
Recently, flexible sensors have attracted great interest for their promising application in wearable electronics. However, previous mechanical sensors are typically limited to detecting one type of stimulus and monotonous in color, which are not able to meet the sensing nor fashion requirements by customers who will wear them in daily life. Herein, a flexible and stretchable sensor based on highly conductive ionic gel is developed. Different phosphor nanoparticles are uniformly embedded into gel to enable color-customization and even self-illumination depending on preference. The gel is also self-healable after complete severance and degradable in hot water. The sensors can detect multiple mechanical deformation modes to allow for detections of strain, pressure, and torsion on a single device. Wearable sensing prototypes are demonstrated with attachment to different parts of human body to detect various human motions, including strain sensing for frowning and elbow/knee bending, pressure sensing for vocal cord vibrations and pulse at wrist, and torsion sensing for shoulder and forearm rotations, through an in-house, wireless, real-time signal transmission and process system. Considering its sensing capability toward different stimuli as well as superior physical properties, the developed color-customizable and self-illuminating ionic gel sensor would find its promising applications toward wearable sensing.
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
危险品化学品经营许可证（带存储）