最新刊期
      卷 20 ， 期 4 ， 2007
      • Peng GAO,Xiao-xia GUO,Hong-jie XU,Jian-hua FANG
        Vol. 20, Issue 4, Pages: 1-13(2007) DOI: 10.14028/j.cnki.1003-3726.2007.04.001
        摘要：This article reviews recent progress in the development of sulfonated hydrocarbon polymers as electrolyte membrane materials for fuel cell application.The syntheses of various sulfonated hydrocarbon polymers such as sulfonated poly(ether sulfone)s,sulfonated poly(ether ether ketone)s,sulfonated polyphenylenes and sixmembered ring sulfonated polyimides via post-sulfonation and/or direct polymerization approach from the related sulfonated monomers are discussed.  
        关键词：Fuel cells;Proton exchange membrane;Sulfonated polymer;Synthesis;Proton conductivity   
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        发布时间：2022-09-18
      • Jian-mao YANG,Yuan-ze XU,Yun-tao HU
        Vol. 20, Issue 4, Pages: 14-22(2007) DOI: 10.14028/j.cnki.1003-3726.2007.04.002
        摘要：The research of the rheology of multiphase complex fluids needs the information of basic mechanic process.Four-roll mill,able to generate Variety flow fields such as rotation,shear,extension and having a stagnation point at the centre of flow field,is suitable to research the deformation,breakup and coalescence of a drop immiscible with matrix or the rheological properties of complex fluids composed of fibers,solid particles,liquid crystal etc and liquids.The application scope of four-roll mill can be extended by combining with other instruments.In this paper, the development,theory basis,main components,application of four roll mill and the main work done with it are presented.Compared with other rheological apparatus,its merits and shortcomings were summarized at this paper end.  
        关键词：Complex fluid;Meso-scale;Four-roll mill;Component;Application   
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        发布时间：2022-09-18
      • Bao-ku ZHU,Yong-hong ZHAO,Li KONG,You-yi XU
        Vol. 20, Issue 4, Pages: 23-28(2007) DOI: 10.14028/j.cnki.1003-3726.2007.04.003
        摘要：Hyperbranched polyglycerol is characterized by the combination of a loose and stable polyether scaffold, a large number of end hydroxyl groups .These characteristics render hyperbranched polyglycerol an ideal candidate for use in a wide range of applications, such as catalysts carriers, biomedical applications, polymer electrolytes, etc .In this brief summary, the current research in hyperbranched polyglycerol is reviewed .  
        关键词：Hyperbranched;Polyglycerol;Synthesis;Functionalization   
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        发布时间：2022-09-18
      • Xiang-guo LU,Wei-dong JIANG,Ya LI,Xin-xia XU
        Vol. 20, Issue 4, Pages: 29-33(2007) DOI: 10.14028/j.cnki.1003-3726.2007.04.004
        摘要：Oxygen cannot only sterilize anaerobic bacterium in oil-field produced water but also degenerate the polymer molecular chains in the alkaline/surfactant/polymer (ASP).Aiming at the problem in which produced water in Daqing Oil Field is used to confect ASP,author investigates the viscosity and the interface tension of ASP confected by aerobic produced water in Daqing Oil Field and evaluates the influence of the bactericide on the viscosity and the interface tension of the ASP by establishing the aerobic and anaerobic experimental conditions.The results show that the viscosity of ASP confected by the aerobic produced water is higher than that of ASP confected by the anaerobic produced water,the interface tension between ASP confected by the aerobic produced water and aerobic crude oil is lowest,and the bactericide can somewhat improve the property of the viscosity and the interface tension of ASP.  
        关键词：Anaerobic and aerobic environment;Alkaline/surfactant/polymer;Crude oil;Viscosity and interface tension   
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        发布时间：2022-09-18
      • Chuan-bao WU,Jian-yuan HAO,Xian-mo DENG,Yu XIA
        Vol. 20, Issue 4, Pages: 34-46(2007) DOI: 10.14028/j.cnki.1003-3726.2007.04.005
        摘要：Secure and efficient gene carrier is a prerequisite of gene therapy coming into reality.Cationic polymer is an important kind of non-viral gene carriers because it is easily produced and modified at a large scale,has no immunogenecity,can complex DNA into compact microparticle to prevent degradation of DNA from Dnase and carry DNA into cell.But cationic polymer has acute cytotoxicity related to charge and lower transfection efficiency than viral carrier,which limits its use in clinical gene therapy.Here,research progress on cationic polymeric gene carrier was summarized in enhancing transfection efficiency and decreasing cytotoxicity.Eight measures of improving cationic polymeric gene carrier in transfection were summaried and the development of cationic polymeric gene carrier was forcast.  
        关键词：Cationic polymer;Gene carrier;Transfection efficiency;Cytotoxocity   
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        发布时间：2022-09-18
      • Qun LIU,Bao-qing SHENTU,Jin-hua ZHU,Zhi-xue WENG
        Vol. 20, Issue 4, Pages: 47-52(2007) DOI: 10.14028/j.cnki.1003-3726.2007.04.006
        摘要：Poly(2,6-dimethylphenylene oxide) (PPO) is an important engineering plastics and is synthesized by oxidative polymerization of 2,6-dimethylphenol (DMP) in an organic solvent,therefore both a solvent recovery process and an explosion-proof reactor are needed.On the view of green chemistry,the use of water as the reaction medium is environmentally friendly.Furthermore,PPO can be separated from water easily due to its insolubility in water.The synthesis of PPO by oxidative polymerization of DMP in oi/l water biphase and aqueous media has been developed.The polymerization of2,6-dimethylphenol,including the oxidative coupling mechanism,and factors that influence the polymerization rate of DMP,oxidative coupling selectivity and molecular weight of PPO in oi/l water biphase and aqueous media,was reviewed in this paper.  
        关键词：2,6-Dimethylphenol (DMP);Poly (2,6-dimethylphenylene oxide) (PPO);Oxidative polymerization;Green chemistry   
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        发布时间：2022-09-18
      • Jie HE,Zhong-ji SU,Li XIANG,Jian WANG,Ying-han WANG
        Vol. 20, Issue 4, Pages: 53-65(2007) DOI: 10.14028/j.cnki.1003-3726.2007.04.007
        摘要：Organic material is one of the most intensively investigated materials used for solar cells.Material and the mechanism of solar cells are summarized detailedly.Especially research progress of solar cells based on conductive polymer is also reported in detail.  
        关键词：Conductive polymer;Solar cells;Conjugated polymer;Materials of cells   
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        发布时间：2022-09-18
      • Wei-bing DONG,Zhi-qiang GE
        Vol. 20, Issue 4, Pages: 66-70(2007) DOI: 10.14028/j.cnki.1003-3726.2007.04.008
        摘要：The preparation and characterization of the various NO-releasing polymeric materials are reviewed in this article.Although a large number of polymeric materials are currently employed to prepare various blood or tissue -contacting medical devices,the thrombogenic nature of such materials can cause serious complications in patients, and ultimately functional failure.Nitric oxide is a well-known anti-platelet agent that can inhibit the thrombosis. Hence,polymeric materials that can release NO locally may effectually solve the adverse problems of such materials.  
        关键词：Nitric Oxide;Polymers;Thrombus;Biocompatibility   
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        发布时间：2022-09-18
      • Xiang-mei WANG,Li-hua ZHANG,Cun-dong WANG
        Vol. 20, Issue 4, Pages: 71-73(2007) DOI: 10.14028/j.cnki.1003-3726.2007.04.009
        摘要：Case study means has self-merits comparing with traditional teaching means.This paper takes the factors affecting polymer chain flexibility for example and detailedly defines the course of implementing case study, according to teaching contents,means and times arrangement,the typical case study requests teachers and students make proper arrangements for the teaching preparations and the teaching processes.In addition,the thesis illuminates the merits of this teaching means and it can get twice the result with half the effect.  
        关键词：Polymer physics;Polymer chain flexibility;Case study   
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        发布时间：2022-09-18
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