最新刊期
      卷 14 ， 期 4 ， 2001
      • Shan-feng WANG,Ping-ping WU,Zhe-wen HAN
        Vol. 14, Issue 4, Pages: 1-8(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.001
        摘要：Polybenzazoles (PBZs) stand for a series of aromatic stiff chain polymers, which have outstanding properties characterized as high-strength, high-modulus, high thermal resistance and good environment stability. In this part, the recent studies on such polymers were reviewed as to such aspects:molecular simulation, plysical properties and application in molecular composites.  
        关键词：Poly (benzazole);π-conjugated polymer;Lyotropic liquid crystalline polymer;Molecular simulation;Molecular composites   
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        发布时间：2022-09-18
      • Yu SHENG,De-qin ZHU,Jian-ding CHEN
        Vol. 14, Issue 4, Pages: 9-14,23(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.002
        摘要：Inorganic nanoparticles have great tendency to aggreation resulting from its high surface energy, so it is difficult for polymeric general processing method to prepare polymer-based nanocomposites.In this series of two reviews, the combination form between inorganic nanoparticles and polymer base and preparation method of polymer-based nanocomposites are sorted, and the fundamental principle and methodologies of in-situ synthesis, direct dispersion method and simultaneous formation method are elucidated, followed by some examples respectively. The paper here emphasizes on the fundamental principle, key techniques and preparation process of in-situ synthesis.  
        关键词：Nanocomposite;Organic-inorganic composite;In-situ synthesis   
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        发布时间：2022-09-18
      • Hong-ding TANG,Jin-gui QIN
        Vol. 14, Issue 4, Pages: 15-23(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.003
        摘要：Poly(ferrocenylsilanes) with alternative ferrocenylene and organosilylene units in the skeleton are attractive materials as they possess high molecular weight, good solubility, chemical diversity and various potential applications.In this paper, the synthetic methods, including condensation polymerization, ring-opening polymerization (ROP) and postfunctionalization, and the physical properties of the polymers are reviewed, and their potential application and perspectives are discussed with 54 refs.  
        关键词：Poly(ferrocenylsilanes);Synthesis;Property;Application   
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        发布时间：2022-09-18
      • Bao-qing SHENTU,Li ZHAO,Zhi-xue WENG,Zhi-ming HUANG,Zu-ren PAN
        Vol. 14, Issue 4, Pages: 24-30(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.004
        摘要：Advance in surface modification of polyethylene through UV-induced graft polymerization was reviewed in this paper.The mechanism and processes of grafting, structure and morphology of graft copolymer, factors affecting photografting were described.  
        关键词：Polyethylene;Surface modification;Ultra-violet radiation;Graft polymerization   
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        发布时间：2022-09-18
      • Feng YU,Xiu-ping LU
        Vol. 14, Issue 4, Pages: 31-37(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.005
        摘要：The in-situ composite on the aspect of rheological properties, interfacial tension, process and compatibility is discussed in this paper.The studies on three new types of in-situ composite in recent years are reviewed.  
        关键词：In-situ composite;Thermotropic liquid crystalline polymer;In-situ hybrid composite with two matrixes;In-situ hybrid composite;Thermoplast fibrillation   
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        发布时间：2022-09-18
      • Jun-tao MA,Rong-hua HUANG
        Vol. 14, Issue 4, Pages: 38-44(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.006
        摘要：Positron annihilation lifetime spectrum is a useful technique to test and characterize polymer structure,such as the research of free volume. At first,the principle and the practical theory of this technique were introduced respectively, then the methods to deal and to process with the data from lifetime spectra have been reviewed,at last the application of this technique was introduced from three aspects: basic theory,practical usage and structural theory.  
        关键词：Positron annihilation lifetime spectra;Free-volume;Positronium;Data processing;Application;Review   
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        发布时间：2022-09-18
      • Mao-lin ZHAI,Lin LIN,Jiu-qiang LI,Ping HE,Gen-shuan WEI
        Vol. 14, Issue 4, Pages: 45-50(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.007
        摘要：Ionizing radiation is one of important methods used in the modification of natural polymer chitin/chitosan, The latest progress including radiation processing of chitin/chitosan and application of radiation modified chitin/chitosan in this area is reviewed in this paper.  
        关键词：Ionizing radiation technology;Chitin;Chitosan   
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        发布时间：2022-09-18
      • Hong LI,Jun WU,Chen-hong WANG
        Vol. 14, Issue 4, Pages: 51-56,62(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.008
        摘要：The preparation and structure of a new type of silica-supported guanidinium chloride and its application to organic synthesis such as hindered ester formation from carboxylic acids and chlorocarbonates, acyl chloride formation from carboxylic acids, and deprotection of actals were reviewed with 27 references.  
        关键词：Guanidinium salt;Polymer catalyst   
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        发布时间：2022-09-18
      • Xiang-dong LUO,Jian XU,Wen-hong TANG,Xin-hua DAI,Xiao-li ZHANG
        Vol. 14, Issue 4, Pages: 57-62(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.009
        摘要：A review was given in synthesis of the fluoro-modified polyurethane based on the polyester and the polyether with different structure.The chemical properties of resultants were also analyzed.The results of different characterization were discussed.It is found that the fluoro-modified polyurethane differes significantly from those of conventional polyurethane with respect to the properties due to their special structure.  
        关键词：Fluoro-modified polyurethane;Synthesis;Characterization;Fluoropolymer   
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        发布时间：2022-09-18
      • Zong-hua LIU,Zi-yong ZHANG
        Vol. 14, Issue 4, Pages: 63-68,F3(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.010
        摘要：Advances on plymer gas separation membranes containing low molecular weight additives were reviewed.Especially, improvements of cobalt complexes and liquid crystals on the permeaselectivity of the gas separation membranes were introduced.  
        关键词：Gas separation membrane;Cobalt complex;Liquid crystal   
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        发布时间：2022-09-18
      • Ning-ning JIAO
        Vol. 14, Issue 4, Pages: 69-74(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.011
        摘要：The synthesis, characterization, reaction mechanism, progress in industry and application of ethylene/propylene elastomer with metallocene catalysts were discussed.The metallocene catalytic systems and the structure and properties of the elastomer were introduced emphatically.  
        关键词：Ethylene/propylene elastomer;Metallocene catalyst;Structure;Property;Application   
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        发布时间：2022-09-18
      • Xiao-bin ZHAO,Lei DU,Xiao-ping ZHANG,Jian ZHENG
        Vol. 14, Issue 4, Pages: 75-80,F3(2001) DOI: 10.14028/j.cnki.1003-3726.2001.04.012
        摘要：Research progress of polymer blends are reviewed‚including compatibility and phase separation. The theory of polymer compatibility‚influence factors on the compatibility‚methods of improving and evaluating the compatibility are elucidated. The phase separation mechanisms of polymer blends control the properties ‚different morphology and sructure are formed according to the spinodal decomposition and nucleation and growth mechanism. The kinetic process for the two phase separation mechanism is obvious different. The scatter intensity is increased exponentially with the phase separation time for the spinodal decomposition‚however‚it is power-law increase for the nucleation and growth phase separation.  
        关键词：Polymer blends;Compatibility;Thermodynamics of compatibility;Phase separation;Kinetics of phase separation   
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        发布时间：2022-09-18
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