最新刊期

    卷 14 , 期 5 , 2001
    • Zai-rong YAN,Shu-ying YANG,Ai-fang YU,Li-ban CHEN
      Vol. 14, Issue 5, Pages: 1-6(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.001
      摘要:The recent development in the research of polyether prepared with ionic polymerization catalysts and double metal cyanide catalysts are reviewed briefly and in detailed, respectively.The structural change, novel synthesis technique of the double metal cyanide catalysts are also summarized.The research trend in the area is predicted.  
      关键词:polyether;Double metal cyanide catalyst;Epoxide;Synthesis   
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      发布时间:2022-09-18
    • Yu SHENG,De-qin HU,Jian-ding CHEN
      Vol. 14, Issue 5, Pages: 7-12,52(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.002
      摘要:Keeping the dispersion state of inorganic nanoparticles in their primary dimension in the polymer base is the key problem in the preparation of polymer-based nanocomposites.In this series of two reviews, the combination form between inorganic nanoparticles and polymer base and preparation method of polymerbased nanocomposites are sorted.The fundamental principle and key techniques of direct dispersion method and simultaneous formation method are discussed in this review.  
      关键词:Nanocomposite;Organin-inorganic composite;Direct dispersion method;Simultaneous formation method   
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      发布时间:2022-09-18
    • Jing PENG,Jin-liang QIAO,Gen-shuan WEI
      Vol. 14, Issue 5, Pages: 13-24(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.003
      摘要:The recent progress and situation of study on the toughening mechanism of polymer toughened by rubber have been reviewed in this paper;especially the quantitative investigation on the brittle-ductile transition of polymer/rubber blends has been emphasized.Also the influences of the morphology parameters of rubber particles, the compatibility of the interface between the rubber particles and polymer matrix, the testing conditions of toughness and the properties of rubber and matrix on the toughness and toughening mechanism of rubber toughened polymers have been discussed in detail.Finally, the trends of toughening of polymer by rubber in the future have been suggested.  
      关键词:Rubber;Toughening mechanism;Polymer;Progress   
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      发布时间:2022-09-18
    • Zhao-xia DONG,Mei-qin LIN,Ming-yuan LI,Zhao-liang WU
      Vol. 14, Issue 5, Pages: 25-33(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.004
      摘要:The application of light scattering on the study of macromolecular solutions and gels in recent more than ten years was summarized extensively.The topics focused on the study of formation and structure of macromolecules in solutions and particles of gels and microgels.The span processes of gelation, microemulsion polymerization and the macromolecular associations can also be investigated by combination of static and dynamic light scattering.The composition and operation of light scattering equipment and the developing history and fundamentals of light scattering was introduced compendiously.  
      关键词:Light scattering;Application;Macromolecular solutions;Gels;Microemulsions   
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      发布时间:2022-09-18
    • Jun MA,Qing-yong FENG,Xiao-li ZHANG,Liang-he SHI,Jian XU
      Vol. 14, Issue 5, Pages: 34-38(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.005
      摘要:The major aspects of the theoretical study on use of polysilsesquioxanes as precursors to silicon oxy carbide ceramics through pyrolysis at elevated temperatures in inert atmospheres and a variety of applications, including matrices, infiltrates and coatings in ceramic matrix composites, were reviewed in this paper. Several methods of pyrolysis have been mentioned.The conversion of silsesquioxanes to silicon oxy carbide ceramics, the pyrolysis mechanism and the final products were discussed.Its coming developments are given.  
      关键词:Polysilsesquioxane;Pyrolysis;Ceramics   
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      发布时间:2022-09-18
    • Jun-hua Zhng,Xue-yong Liu,Xiao-bing Ding,Yu-xing Peng
      Vol. 14, Issue 5, Pages: 39-43(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.006
      摘要:The applications of functional polymer materials as carriers (such as:biosensor, latex, magnetic particles and gel) in detection and diagnosis are reviewed.The prospects are also presented.  
      关键词:Functional polymer material;Carrier;Detection;Diagnosis   
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      发布时间:2022-09-18
    • Jian ZOU,Ben-hui SUN,Cui-xian CHEN
      Vol. 14, Issue 5, Pages: 44-52(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.007
      摘要:In this present paper, the development of polyelectrolyte pervaporation membranes was reviewed.Definitions, characters, and preparations of polyelectrolyte and polyelectrolyte complex were covered. Preparations and separation performances of some important polyelectrolyte membranes developed in recent years were introduced in more details.  
      关键词:Polyelectrolyte;Polyelectrolyte complex;Pervaporation;Membrane material   
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      发布时间:2022-09-18
    • You-wei ZHANG,Cheng-xun WU,Bin ZHANG,Jiong-xin ZHAO
      Vol. 14, Issue 5, Pages: 53-59(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.008
      摘要:In this paper, biosynthesis technology was introduced briefly.The application of biotechnology in the field of polymer materials was illustrated in detail.In addition, the prospect on the development of this new technology was also discussed.  
      关键词:biotechnology;Biosynthesis;Polymer materials   
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      发布时间:2022-09-18
    • Hui ZHAO,Qi-jin ZHANG
      Vol. 14, Issue 5, Pages: 60-65,73(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.009
      摘要:Photonic crystal is a new concept and a class of new material noticed in recent decade.A brief description of unique features of photonic crystal is given in this paper.The fabrication of photonic crystals are described, especially the polymer photonic crystals.  
      关键词:Photonic crystal;Periodic structure;Dielectric material;Photonic band gap   
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      发布时间:2022-09-18
    • Qing-hua ZHANG,Da-jun CHEN,Meng-xian DING
      Vol. 14, Issue 5, Pages: 66-73(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.012
      摘要:Polyimide fibers possess many advantageous properties, e.g., high strength, high modulus, heat resistance, radiation resistance, etc..In this article, the preparation of polyimide fibers by wetspinning technology including one-step and two-step process and fusible-spinning technology and the properties of the fibers are reviewed.  
      关键词:Polyimide;High performance fibers;High strength;High modulus;Spinning technology   
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      发布时间:2022-09-18
    • Ping-sheng HE,Ping-ping ZHU,Hai-yang YANG
      Vol. 14, Issue 5, Pages: 74-79(2001) DOI: 10.14028/j.cnki.1003-3726.2001.05.010
      摘要:When teaching course of "The Structure and properties of Polymers" , it is important to lay stress on the characteristics of polymers.The paper presents much discussion on characteristics of polymers, such as flexibility of macromolecular chain, unique entropy elasticity and notable viscoelasticity of polymer materials, peculiar WLF equation, possible orientation of large scale motion unit and dis-orientation of small scale motion unit, crazing, single-chain condensed state, folded lamellar crystals and macroscopic single polymer crystals with stretched chain, multi-distribution of molecular weight, properties of polymer solution and elasticity of polymer melts.  
      关键词:Polymer;The structure and properties;Flexibility;Chain segment motions.   
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      发布时间:2022-09-18
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