最新刊期
卷 30 ， 期 8 ， 2017
- 摘要：Ion sensors are made for detection of ions that are trace in water but are of great influence to healthy or ecological environment. Graphene, with its unique thermal, electrical and mechanical properties, has aroused widespread attention in ion sensing. Graphene with its derivatives and composites can be modified and functionalized to meet various requirements in ion sensors. In this paper, the recent progress of graphene-based ion sensors for detection of ions like Hg+, Pb2+, Cu2+, K+, etc were reviewed. The future development of graphene-based ion sensors were also prospected.关键词：Graphene;Ion sensor;Metal ion;Sensor
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发布时间：2022-09-06 - 摘要：Mussel adhesive protein can adhere to almost all kinds of surfaces with high strength, toughness, and resistance to water or moisture. This environmentally friendly,efficient adhesive in mild condition has aroused interests of researchers, especially in how it works and where it can be used. Most of the studies have demonstrated that the strong adhesion ability of mussel is associated with a large amount of 3,4-dihydroxyphenyalanine(DOPA) in its adhesion protein. Inspired by the method that mussel adhesive proteins works, scientists found it possible to use DA instead of DOPA to achieve similar adhesion, because DA molecule has similar functional groups to DOPA as well as the similar molecular structure after polymerization. In this paper, the adhesive mechanism of mussel-inspired bio-mimic polymer, PDA, was introduced, and the applications of its derivatives PDA and in different fields, such as surface modification, catalyst, bioantifouling and biomedicine was reviewed.关键词：Mussel adhesive;DA;Bio mimic
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发布时间：2022-09-06 - 摘要：3D printing, also named as Additive Manufacturing, is attracting increasing attentions from tissue engineering, aerospace engineering, automotive industry and electronics, due to its advantages of free form design and manufacturing. Besides the complex structures and excellent biomedical properties, surface performances of 3D printing skeleton and organs are also crucial for practical applications, for example, biocompatible, antibacterial and cell adhesion properties are necessary to 3D printed tissue scaffolds and organs. Therefore, combining 3D printing technology with traditional surface modifications is significant for expanding 3D printing’s applications. Multifunctional 3D printed skeleton and organs can be offered by post surface biochemistry modification of the skeleton and organs with retaining their bulk properties, and a more splendid application can be expected. In this review, we summarized the recent progress in the 3D printing biomedical materials based on the surface modification of 3D printed skeleton and organs.关键词：3D printing;Surface modification;Tissue engineering
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发布时间：2022-09-06 - 摘要：Artificial muscle actuators that can exchange information, convert energy and actuate by mimicking natural muscles have been the focus of developing new materials. Smart polymer exhibiting shape changes in response to environmental stimuli is an excellent candidate for fabricating artificial muscles which have wide-ranging adaptations in robots and the intelligent mechanical system, thus being an important branch of muscle-like actuator investigations. In this review, we mainly summary the recent progress in electromechanical polymer artificial muscles materials including electrostatic actuation, electrothermal actuation, and moisture/relative humidity actuation. Key factors that may affect the actuation process are discussed in order to shed light on possible future research of artificial muscles materials.关键词：Artificial muscles;Electromechanical;Electrostatic;Electrothermal;Moisture
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发布时间：2022-09-06 - 摘要：The study of self-healing materials was inspired by the self-cured biological systems, which can repair themselves and maintain their mechanical properties at certain degree after being wounded. For the polymeric materials, homolytic or heterolytic bond cleavage happen in macromolecular chains when damages occurred, leading to microcracks which is hard to detect. The appearance of microcracks will generally result in the failure of the polymeric materials. Thus, quickly healing the microcracks are important for the application of polymeric materials in various engineering fields.. In this review, we summarized the progresses of extrinsic and the intrinsic self-healing polymeric materials in recent 5 years, and the future development is prospected.关键词：Self healing;Polymer materials;Extrinsic;Intrinsic
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发布时间：2022-09-06 - 摘要：Polymer-supported metallic catalysts have lots of advantages such as higher catalytic activity, stereoselectivity, better stability, reusability and easier to handle, compared with homogeneous catalysts. After the completion of the reaction, the catalyst could separate from the reaction mixture and the catalyst could be recovered and reused by simple filtration for the next run. The cost and pollution could be reduced efficiently to some extent. The application of polymer supported precious metallic reagents in organic synthesis in recent five years are reviewed, the review has been divided into Ruthenium, Palladium, Silver and Gold according to the metal used and further sub-divided according to their application in organic reactions. This report is limited to the use of non-soluble polymeric supports, organometallics attached to silica, soluble polymers and dendrimers are excluded, although many interesting new supported catalysts have appeared using such materials also. Palladium-containing catalysts are introduced particularly because of their extensive use, we also ignored the Rhodium-containing catalysts due to the insufficient of literature.关键词：Polymer supported precious metal catalysts;Solid phase organic reactions;Non soluble polymeric supports
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发布时间：2022-09-06 - 摘要：At present, polyacrylonitrile and pitch are globally the most important starting materials for the preparation of carbon fibers. But due to high costs, these carbon fibers almost remain a product for use in high-end industrial applications. In the recent years, the interest in lignin as raw material for preparing carbon fibers is rapidly growing because of its low price, environmental friendly, abundant resources, wasting resource recycling. Besides, lignin has high carbon content and high carbon yield after carbonization. This review systematically summaries lignin-based carbon fibers prepared from different spinning methods and their mechanical properties. Finally, the future development of lignin-based carbon fibers is prospected.关键词：Lignin;Carbon fibers;Precursor;Spinning
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发布时间：2022-09-06 - 摘要：Fuel cell is a kind of clean and high-efficiency energy conversion device. Proton exchange membrane fuel cell (PEMFC), with the advantages of high specific power, high stability and rapid operation, is an ideal candidate for the portable power sources in the future. Cost and lifetime are the biggest obstacles in the way of PEMFC’s commercialization, which must be solved by searching and developing novel materials. These areas also become the keystones and hotspots in proton exchange membrane research and development. This article introduces the latest research progress of proton exchange membrane materials, mainly including:polymer, ceramic and organic-inorganic compounds. At the same time we discuss the feature of each material and the prospect of proton exchange membrane in the future.关键词：Fuel cell;Proton exchange membrane;Polymeric;Ceramic;Inorganic-organic
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发布时间：2022-09-06 - 摘要：Since industrialization, a variety of pollutions from human activities have increased greatly than before in China. As we know, China is facing a serious water pollution challenge especially. The water was infected with toxic materials from industrial production and daily life, such as heavy metal ions and organic waste. Therefore, it is urgent to draw up and introduce an effective and practical adsorbent. Depending on a recent study, we found that cellulose is abundant in nature, and its adsorption effect is very obvious. Meanwhile, adsorption capacity can be enhanced with chemical modification. Given this, in this thesis, the physical chemical property of cellulose, adsorption mechanism as well as chemical modification will be summarized. From the present articles, we can discover that the application of cellulose adsorbent enjoys great potential and promising prospects. However, industrial applications of cellulose should be explored further.关键词：Cellulose;Adsorbent;Chemical modification;Water pollution
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发布时间：2022-09-06 - 摘要：Epoxy resin (EP), as an excellent matrix resin, has been widely utilized in a variety of fields. But due to the flammability of EP, it’s needs to conduct flame retardant treatment. In this review, recent advances on flame-retardant epoxy resin based on phosphorus-containing compound and graphene have been summarized. The emphases were focused on the intermediate of flame retardant of 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) and its derivatives, and ammonium polyphosphate (APP) when discussing phosphorus-containing compound. Meanwhile, the research progresses of flame-retardant epoxy resin containing graphene and its derivatives have also been introduced.关键词：Epoxy resin;Flame retardant;Phosphorus containing compound;Graphene
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发布时间：2022-09-06 - 摘要：In recent decades, rechargeable lithium battery has experienced the rapid development as one kind of energy storage device, and the exploitation of high-performance cathode materials has been one of the hotspots of electrochemical energy field. Compared with conventional inorganic cathode materials, polymer cathode materials are promising candidates for high energy density, flexible, cost-effective, environmentally friendly, and functional rechargeable lithium batteries. This review presents a brief overview of structural features, conductive mechanism, electrochemical properties and major research advancement over the past five years on polymer cathode materials, mainly including conducting polymers, conjugated carbonyl polymers and organosulfur polymers. Herein advantages and challenges of three kinds of polymer electrode materials are summarized. Besides, challenges and modified methods of organosulfur polymers were emphasized. Finally we pointed out that sulfur conjugated conducting polymers with comprehensive features shall be the focuses of future research work.关键词：Rechargeable lithium battery;Polymer cathode materials;Conducting polymers;Conjugated carbonyl polymers;Organosulfur polymers
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发布时间：2022-09-06 - 摘要：Metal organic framework material (MOFs) is a kind of porous polymer material, which has been developing rapidly in recent years. MOFs is a kind of crystalline porous material with periodic network structure formed by the extension of organic ligands with metal ions as the center. Due to its structure property, high ratio surface area, high porosity and controllable pore structure, MOFs has promising prospects in gas adsorption, energy storage, environmental remediation and drug delivery etc. This paper aims at summarizing the recent progress in the study of adsorption ability of MOFs and its future development and possible application.关键词：Metal organic framework;Porous polymer;Adsorption
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发布时间：2022-09-06 - 摘要：In recent years, organic solar cells evolve in an exponential manner in efficiency, increasing from 5% to over 11%. The promise of organic photovoltaic(OPV)as a future energy technology has received more attention. However, problems of stability may hinder commercial application of that. Inorganic silicon-based solar cells may last on the order of 25 years, while organic materials are by nature more susceptible to chemical degradation from e.g. oxygen and water than that, which leads to a shorter lifetimes of the order of thousands of hours. Polymer solar cells are complicated multilayer structures where each component may fail for different reasons, the stability and degradation issue are certainly not yet fully understood. Besides, development of encapsulation using novel methods may present new stability challenges. In this review, the current understanding of stability and degradation in organic solar cell devices is presented and the photo-stability of the active polymer materials, the inverted device structure of the bulk heterojunction geometry device, morphology control and the specific stability issues of roll to roll method are discussed.关键词：Organic solar cells;Degradation;Life time
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发布时间：2022-09-06
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