最新刊期
      卷 12 ， 期 4 ， 1999
      • Guangming Chen,Qiang Li,Zongneng Qi,Fosong Wang
        Vol. 12, Issue 4, Pages: 1-10(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.001
        摘要：Polymer layered silicate (PLS) nanocomposites are of a novel type of advance composites,which have been studied for about 10years.They have unique structures as well as mechanical,thermal and gas/liquid barrier properties than their conventional counterparts.PLS nanocomposites play an important role in scientific research and technical application.In this paper, the recent developments in preparation,characterization and analysis of thermodynamics and kinetics of PLS nanocomposites are reviewed with 62 references.  
        关键词：Nanocomposites;Layered silicates;Intercalation compounding;Intercalation polymerization   
        2
        |
        9
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980144 false
        发布时间：2022-09-18
      • Peijun Ji,Jian Xu,Meiling Ye,Lianghe Shi
        Vol. 12, Issue 4, Pages: 11-16(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.002
        摘要：Advanced development of block copolymer micelles was reviewed since early 1980’s in this paper.The kinietics,dynamics,structure and hydronamic behaviour of micelle formation were dicussed.  
        关键词：Block copolymer micelle;Kinietic;Dynamics;Hydronamics   
        2
        |
        8
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980145 false
        发布时间：2022-09-18
      • Hongquan Xie
        Vol. 12, Issue 4, Pages: 17-24,33(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.003
        摘要：Molecular design and synthesis of various amphiphilic block and graft copolymers containing polyoxyethylene segments and polystyrene or poly(meth) acrylate segments,including diblock,ABA and BAB triblock,star-shaped block,multiblock,as well as two kinds of graft copolymers with uniform grafts,were reviewed.Special properties of these copolymers,such as amphiphilic properties,complexing with alkali metal ions,microphase separation etc.were summarized.  
        关键词：Block copolymer;Graft copolymer;Amphiphilic copolymer;Polyoxyethylene   
        2
        |
        8
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980140 false
        发布时间：2022-09-18
      • Yaohui Lei,Hong Li,Binglin He
        Vol. 12, Issue 4, Pages: 25-33(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.004
        摘要：Recent advances in asymmetric organic reactions such as hydrogenation,reduction, alkylation,Diels-Alder reaction and dihydroxylation exc.catalyzed by polymer supported chiral catalysts are reviewed in this paper with 55 references.  
        关键词：Asymmetric organic reaction;Polymer supported chiral catalyst   
        2
        |
        8
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980142 false
        发布时间：2022-09-18
      • Guohua Chen,Yucheng Peng,Jiahua Yang
        Vol. 12, Issue 4, Pages: 34-39(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.005
        摘要：The configuration of a single polymer chain and polymer brush in equilibrium with a solvent that is subject to a shear flow is presented. When a force exerted at the end of a polymer chain, the chain deformation will be vary with the force, firstly has a trumpet regime, and then a stem flower regime occurs with the force increasing. In the monodisperse brushes, the monomer density has a parabolic distribution along the normal direction of the brush surface. During the oscillatory flow, extreme shear thickening occurs when the ratios of the Weissenberg number to the flow frequency W i/ω=3, shear-induced diffusion is shown to create this thickening. In the polydisperse brushes, there is a conformation transition, meanwhile, interaction between two particle brushes, neutral and charged polymer brushes are studied in details.  
        关键词：Surface;maromolecule chain;Brush model   
        2
        |
        8
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980141 false
        发布时间：2022-09-18
      • Jianguo Tang,Keao Hu,Haiyan Liu,Dong Guo,Yiqin Zhou,Renjie Wu
        Vol. 12, Issue 4, Pages: 40-47(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.006
        摘要：In this paper, the definition, function of polymer matrix, morphological structure of metal phase, interaction between polymeric and metallic phases were expatiated. The design, preparation, properties, and applications of the layer, multilayer, and nano composites were reviewed preferentially.  
        关键词：Polymer;Metal;Composite;Optic;Nano   
        3
        |
        9
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980223 false
        发布时间：2022-09-18
      • Yanming Dong,Qing Yuan
        Vol. 12, Issue 4, Pages: 48-56,33(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.007
        摘要：The fundamental structural conditions for the biological macromolecules,chitin and its derivatives to form liquid crystalline phase are discussed.Some chemical modification methods necessary for preparation of chitin derivatives bearing liquid crystalline behaviors are briefly summarized.The studies on the liquid crystalline behaviors of chitin derivatives (mainly of chitosan and its derivatives) ever since 1982are reviewed.Fiber spinning from lyotropic liquid crystalline solutions of chitin and its derivatives and its prospects of application are introduced. And it is concluded that chitin and its derivatives have made up a novel family ofliquid crystalline biological macromolecules besides celluloses.  
        关键词：Chitin;Chitosan;Derivatives;Biological macromolecules;Liquid crystalline polymers;Lyotropic;Cholesteric phase;Fiber spinning   
        2
        |
        6
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980224 false
        发布时间：2022-09-18
      • Xiaoxuan Liu,Yonglie Chen
        Vol. 12, Issue 4, Pages: 57-66(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.008
        摘要：Polymer coatings have been commonly employed to protect a large variety of materials against photo-aging,as well as to improve the surface properties.The stabilization technologies have been studied actively in material science and photochemistry of polymers.This paper reviews recent developments in photostabilization and photooxidation of polymer coatings.Especially the new trends of hindered amine light stabilizers (HALS) and UV absorbers (UVA) , photoinitiators and multifunctional monomers applied for UV-cured coatings have been emphatically discussed in terms of the reaction characteristic and the photochemical mechanism of photostabilization.  
        关键词：Photostabilization;Photooxidation;UV-cured coatings;Hindered amine light stabilizers (HALS)   
        4
        |
        9
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980217 false
        发布时间：2022-09-18
      • Guian Wen,Wengong Zhang,Cuiying Lin
        Vol. 12, Issue 4, Pages: 67-70,99(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.009
        摘要：There are some differences between plasma-initiated polymerization (PIP) and classical radical polymerization.As far as some peculiar phenomena of PIP,such as strong solvent effect,formation of ultra-high molecular weight polymer,high monomer selectivity are concerned, this paper summarizes some proposal mechanisms of PIP on the basis of other’s researches.  
        关键词：Low-Temperature plasma;Plasma-Initiated polymerization;Mechanism   
        2
        |
        7
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980226 false
        发布时间：2022-09-18
      • Jianhua Dong
        Vol. 12, Issue 4, Pages: 71-76(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.010
        摘要：Study on high molecular weight polysilanes,polygermanes and polystannanes has been reviewed.In the polymers consisting of only catenated homoatoms of group IV elements like Si,Ge,or Sn along the polymer backbone,there are two organic substituents at each atoms of Si, Ge,or Sn.The organic substituents are usually alkyl or aromatic groups.It has been shown experimentally that the skeleton absorption energies due to σ-σ* transition decreases from Si to Sn.The polymers consisting of Si,Ge,or Sn exhibit a strong UV-vis absorption that results from σ-conjugation along the Si,Ge,or Sn backbone respectively,which leads to these polymers interesting and promising electronic properties and potential applications.  
        关键词：Linear high polystannanes;Polygermanes;Polysilanes;Optical-electrical activities of σ-conjugated polymers   
        2
        |
        7
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980214 false
        发布时间：2022-09-18
      • Lei Zhang,Youliang Hu
        Vol. 12, Issue 4, Pages: 77-82,66(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.011
        摘要：In this review, the main preparation methods for supported metallocene catalysts are systematized and described. The nature and structure of active sites as well as their formation mechanism are analyzed. The effects of supporting on the performances for olefin polymerization of metallocene catalysts are also discussed.  
        关键词：Metallocene;Supported catalyst;Olefin polymerization   
        3
        |
        8
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980263 false
        发布时间：2022-09-18
      • Pinggui Liu,kecheng Gong
        Vol. 12, Issue 4, Pages: 83-87(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.012
        摘要：Self-assembly(SA) ,a new method of creating ultrathin polymeric nanocomposite films is introduced in this paper,which is based on the electrostatic attraction between opposite charges.In contrast to classic Langmuir-Blodgett and other techniques,films’ good long-term thermal and mechanical stability,relative ease of preparation and high degree of versatility render SA technique amenable to a large variety of diverse polyelectorlyte systems,such as polyelectrolyte- polyelectrolyte,polyelectrolyte-clay platelets,polyelectrolyte-protein,polyelectrolyte-inorganic nanaparticles,and so on.  
        关键词：Self-assembly;Langmuir-Blodgett technique;Polymeric nanocomposite films   
        2
        |
        8
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980256 false
        发布时间：2022-09-18
      • Yanling Luo,Zhenxing Zhao
        Vol. 12, Issue 4, Pages: 88-99(1999) DOI: 10.14028/j.cnki.1003-3726.1999.04.013
        摘要：The mechanism of polymer radiation cross-linking was simply described.Various kinds of factors affecting radiation cross-linking reaction and its dynamics were dealed with on the literatures.Technical developments in the influence of radiaton cross-linking on properties of polymers and its applications were also reported.The differences between radiation cross-linking and peroxide cross-linking were compared in the present paper.  
        关键词：Radiation cross-linking;Polymer;Technical progress;Application;Chemistry cross—linking   
        2
        |
        7
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 29980264 false
        发布时间：2022-09-18
      0