最新刊期
卷 32 ， 期 1 ， 2019
- 摘要：The rapid development in polymer science for last 30 years in China was briefly reviewed with the fact including publications in international journal, the initiatives and their facilities, the polymer industry which reflecting the fast progress. The major projects in National Natural Science Foundation of China related to polymer were introduced.关键词：Development of polymer science;Review of history;Major projects in NSFC
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发布时间：2022-09-02 - 摘要：Photoinduced mass transfer behavior of azo polymers has aroused extensive research interest in recent years, which involves a series of basic scientific problems about light-matter interactions and promising application prospects. Azo polymer microspheres can act as a unique type of isolated deformation unit to show photoinduced mass transfer behavior. The research in this area not only offers a novel method for the preparation of shape-anisotropic particles through photoinduced shape-manipulation, but also provides a valuable tool for studying the complex multi-scale motions of photoinduced mass transfer behavior. This article presents and summarizes the progresses in the photoinduced mass transfer and deformation of azo polymer microspheres in recent years. The deformation behavior and its intrinsic mechanism of azo polymer microspheres under different conditions are comprehensively discussed. A perspective of the future research and applications in this field is also presented.关键词：Azo polymer;Microsphere;Photoinduced mass transport;Shape-anisotropic particles;Photo-fabrication
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发布时间：2022-09-02 - 摘要：Polymer/titanium dioxide nano-hybrid materials combine the advantages of different component materials. Improved comprehensive performance could be achieved and meet the material requirements in practical applications. In this paper, the research progress of our group on the design and preparation of polymer/titanium dioxide nano-hybrid materials was introduced in detail. The topic was focused on polymer supported photocatalysts and photodegradation and stability of polymers.关键词：Polymer nano-hybrid materials;Titanium dioxide nanoparticles;Photocatalysis;Photo stabilization;Photo degradation
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发布时间：2022-09-02 - 摘要：In this paper, polyethylene (PE) microtubes with high torsion resistance were firstly fabricated by our self-designed rotation rheometer with mandrel rotation modes. The results demonstrated that with the introduction of hoop stress during rotation extrusion, molecular chains are starched in the off-axial direction and formed shish-kebabs with deviated angles. The deviated shish-kebabs exhibited high orientation degree in the pure shear stress direction, which gave rise to enhanced torsion resistance of PE microtubes. Compared with conventional PE microtubes, a maximum shear modulus of 1018. 11 MPa was achieved, increased by 89.3%.关键词：Rotation extrusion;Polyethylene tubes;Microtubes;Morphology;Orientation
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发布时间：2022-09-02 - 摘要：The structures and properties of reclaimed rubber (RR) modified with multi-block trans-1, 4-poly(butadiene-co-isoprene) copolymer rubber (TBIR) were researched. The results showed that, the reclaimed rubber used in this experiment was consisted of 100 phr rubber and 58 phr filler. 100 phr TBIR and 58 phr carbon black (CB) were mixed for the TBIR master-batch preparation. 90~60 phr RR and 10~40 phr TBIR master-batch were mixed to prepare the RR/TBIR compounds. Compared with RR vulcanizates, RR/TBIR vulcanizates showed excellent performances, such as improved tensile strength (33% to 83% higher), modulus at 100% (31% to 75% higher), tear strength (39% to 76%higher), shore A hardness (3% to 11% higher), rebound (30% to 65% higher),abrasion resistance (11% to 25%higher), tensile fatigue resistance (0.5 to 2.1 times),flex fatigue crack initiation resistance (1.0 to 7. 3 times), hot-air ageing resistance (11% to 59% higher) and ozone ageing resistance (5% to 27% higher),and decreased rolling resistance(20% to 42% lower). The improved polymer networks,filler-polymer interaction and filler distribution of RR was obtained through the simple blending of RR and TBIR. A high performance modification strategy for RR with TBIR is proposed.关键词：Trans-1;4-(butadiene-co-isoprene) copolymer rubber;Reclaimed rubber;Fatigue resistance;Rolling resistance;Abrasion resistance
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发布时间：2022-09-02 - 摘要：A series of novel functional monomers containing thiophene and 2,3-substituted indoles were designed and synthesized. Their structures were confirmed by GPC and FTIR. The results of TGA and electrochemical analysis showed that by introducing the electron-absorbing groups into the indole part,the thermal stability of the polymer could be improved and the energy gap of the polymer could be enlarged. The results of UV-vis and fluorescence emission spectroscopy showed that the donor-acceptor effect, the chain-to-chain interaction and the π-π stacking interaction together lead to different spectroscopic phenomena of polymers, emitting fluorescence with different colors such as red, orange-red, light red, blue-green, yellow and brown,which can effectively avoid the fluorescence interference of cells, and showed good application potential.关键词：Conjugated polymers;Thiophene;Indole;Spectroscopic phenomena;Electrochemical properties
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发布时间：2022-09-02 - 摘要：This paper explores the feasibility of preparing non-curable rubber modified asphalt waterproofing coating with rubber powder. The results show that 80 mesh rubber powder can be used to prepare non-curable rubber modified asphalt waterproofing coating to meet the requirements of JC/T2428-2017. Because the crosslinking of rubber powder limits the kinematic ability of molecular chain, it can not give full play to the characteristics of linearized rubber. In order to fully realize these characteristics, the feasibility of using reclaimed tire rubber powder to prepare non-curable rubber modified asphalt waterproofing coating was explored. The results showed that the reclaimed rubber powder with the degree of desulfurization degradation (activation degree) of about 50% could be added in large proportion without affecting the non-curing properties. The optimum proportion is 15% reclaimed tire rubber powder, 30% plasticizer,9% SBR, 2%thermosensitive thixotropic agent and 60% talc powder with 100% asphalt. Because the small molecular components of reclaimed rubber powder are similar to plasticizers,quasi-linear macromolecular rubber components and toluene insoluble substances in the mechanism of action with SBR, the above-mentioned interaction can replace some plasticizers and SBR in the traditional scheme, and obtain excellent comprehensive physical properties.关键词：Non-curable;Waterproofing coating;Rubber powder;Reclaimed tire rubber powder
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发布时间：2022-09-02 - 摘要：In this paper,the research progress of cyclo-olefins copolymer during the last decade were overviewed. Ethylene/Norbornene(E/NB) copolymers, Propylene/Norbornene (P/NB) copolymers and functionalization cyclo-olefins copolymer were highlighted. The characteristic of catalyst,included metallocene,non-metallocene and late-transition catalysts, being used in synthesis of E/NB copolymers and P/NB copolymers, were all summarized. Through the design of catalyst structure and the control of polymerization conditions,both the copolymerization activity and microstructure of the copolymers could be regulated, also, the synthesis of functionalization cyclo-olefins copolymer could be achieved.关键词：Cyclo-olefins;Ethylene;Propylene;Functionalization;Copolymers;Research progress
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发布时间：2022-09-02 - 摘要：As a high crystallinity polymer, polyethylene terephthalate (PET) is the first variety on the amount for textile and clothing fibers,and has the advantages of good creep resistance and high wear resistance. However, the flammability of PET limits its further promotion and application. Although phosphorus-based flame retardants can effectively improve the flame-retardant properties of PET, phosphorus-based flame retardants (such as ammonium carbonate, phosphates,phosphates,etc.) also have poor heat resistance,low dimensional stability, easy to seep, degradation products are easy to induce PET degradation. Therefore,in view of the shortcomings of single phosphorus flame retardants, this paper mainly reviews the modification progress of composite flame retardants with phosphorus and other flame retardant elements such as nitrogen, silicon, aluminum and boron for PET flame retardant,and provides ideas for constructing new multi-element hybrid flame retardants.关键词：Polyethylene Terephthalate;Flame retardant;Hybrid;Flame retardant mechanism;Phosphorus flame retardant
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发布时间：2022-09-02 - 摘要：Photonic crystals (PC) are functional materials with periodic ordered structure, which can regulate the propagation of light by designing its building units. Polymer photonic crystals have become one of the research hotspots of stimuli-responsive materials because of both the convenience of incorporating functional and responsive moieties, and the easy tunability of lattice periodicity and refractive index. Therefore, they have been intensively studied in the fields of intelligent display, anti-counterfeiting identification, and sensing detection. In this work, the regulation methodology and properties of stimuli-responsive polymer photonic crystals are summarized. Based on the literatures published in recent years, the latest research progress is reviewed.关键词：Polymer;Photonic crystal;Stimuli responsive;Opal;Structure color
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发布时间：2022-09-02 - 摘要：The research of microreactor in the field of polymerization reactions is booming due to its excellent heat and mass transfer performance. Compared with the conventional tank reactor, microreactor technology can regulate the polymer molecular weight distribution and improve the polymerization rate better, as well as control the polymer molecular structures and product morphologies. In this short review, the research progress of microreactor technology in coordination polymerization, ring-opening polymerization and photoinduced controlled radical polymerization are summarized, and the scale-up of the microreactor polymerization technology is briefly introduced. Finally, the development trend of the microreactor technology in polymerization is prospected.关键词：Microreactor;Polymerization;Coordination polymerization;Ring-opening polymerization;Photoinduced controlled radical polymerization
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发布时间：2022-09-02 - 摘要：The development of neural electrodes has received increasing attention in areas such as biomedical engineering, neuroscience, and related clinical medicine. Traditional neural electrodes face electrical signal failures, resulting in a series of tissue responses. In order to make the nerve probe-nerve interface with good electrical properties, to ensure its long-term effectiveness,we need to use the surface coating to modify the electrode, including to modify the electrode microstructure or to find new materials. Conductive polymers are easy to synthesize and own conductive performance and good biocompatibility, the electrochemical performance could be improved significantly by coating of conductive polymers and their composites. The recent progress of conductive polymers as neural electrode coating is introduced in this paper.关键词：Neural electrode coating;Conducting polymers;Carbon nanotube;Bioactive coating
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发布时间：2022-09-02
The 30th Anniversary Issue I
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