最新刊期
      卷 0 ， 期 0 ， 2020
      • Ming-ge ZHANG,Han HONG,Wei-dong YAN,Da-wei HE,You-liang HU
        Vol. 14, Issue 6, Pages: 1-7,53(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.001
        摘要：The performance of the novel single site catalysts-salicylaldimne transition complexes was reviewed in detail.  
        关键词：Single site catalysts;Olefin polymerization;Salicylaldimne   
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        发布时间：2022-09-18
      • Jin WANG,Xing-guo CHENG,Ming-jun YUAN,Jia-song HE
        Vol. 14, Issue 6, Pages: 8-17,45(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.002
        摘要：Microcellular polymers, as a group of foamed materials invented in 1980s have got a great development in 1990s due to the application of supercritical CO2 in their processing.They are usually called as "novel materials for 21 Century" .In this review, the preparation, structure and properties of microcellular polymers, theoretical progress are summarized.The advantages of using supercritical CO2 in making microcellular polymers are emphasized.A detail description of basic methods, such as batch method, pressure quenching method and continuous method, is presented together with the progress in the research of these methods. Finally, the futrue of microcellular polymers is also predicted.  
        关键词：Microcellular polymers;Supercritical CO2   
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        发布时间：2022-09-18
      • Hong-bin LU,Yu-liang YANG
        Vol. 14, Issue 6, Pages: 18-26(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.003
        摘要：Particle-filled polymers(including polymer-based nanocomoposites) usually exhibit higher moduli, variation in frequency dependence and the yield behavior of concentrated filled systems, which is distinctly different from the Rheology of plain polymers.Furthermore, these rheological characteristics could be influenced by many factors such as the filler' s loading, shape, size, and the interaction between particles and polymers.The rheological behavior of filled-polymers is closely associated with the formation and evolution of microstructure involved in materials as well as the damped relaxation processes under specific conditions.In this paper, the rheological characteristics of filled polymers(including polymer-based nanocomposites) under the force field and various influencing factors acted on them were reviewed, especially elucidating the rheological mechanism of polymer-based nanocomposites and Leonov model used to describe rheological behaviors of filled polymers.  
        关键词：Filled polymers;Nanocomposites;Rheology   
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        发布时间：2022-09-18
      • Qing-xin ZHANG,Zhi-shen MO
        Vol. 14, Issue 6, Pages: 27-37(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.004
        摘要：This review focuses on the crystal structure, crystal transitions and piezoelectricity of Nylon 11 combined with the authors′works.  
        关键词：Nylon 11;Properties;Crystallization;Crystal transitions;Piezoelectricity   
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        发布时间：2022-09-18
      • Gang XIE,Qiu-yu ZHANG,Tie-hu LI
        Vol. 14, Issue 6, Pages: 38-45(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.005
        摘要：In this paper the recent research progresses of magnetic polymer microspheres are reviewed with 48 references.Several kinds of preparation methods and the applied developments of magnetic polymer microspheres in cell separations, organic synthesis and environment/food microorganism detections are discussed in detail.And the prospects of magnetic polymer microspheres are also proposed.  
        关键词：Magnetic polymer microsphere;Preparation;Cell separation;Organic synthesis;Microorganism detection   
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        发布时间：2022-09-18
      • Cong-hua LU,Chuan-qiou LUO,Wei-xiao CAO
        Vol. 14, Issue 6, Pages: 46-53(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.006
        摘要：The recent research progress on modifications of Chitosan especially in grafting copolymerization, blending and forming polyelectrolyte complex, as well as the applications of its modifiers as biomedical materials was reviewed.  
        关键词：Chitosan;Modification;Biomedical materials   
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        发布时间：2022-09-18
      • Jun ZHANG,Chang-ren ZHENG,Jin-ming FENG
        Vol. 14, Issue 6, Pages: 54-59(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.007
        摘要：In this paper, thermal conductivity property of polymer solid, polymer melt and polymer solution was discussed respectively.The influence of various controlling factors on their thermal conductivity property was mostly presented.Finally, some view on the future development of thermal conductivity of polymer was submitted.  
        关键词：Polymer solid;Polymer melt;Polymer solution;Thermal conductivity   
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        发布时间：2022-09-18
      • Wei-zhong LV,Wei-ping TU,Huan-qin CHEN
        Vol. 14, Issue 6, Pages: 60-65(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.008
        摘要：The performance, methods and theory of preparation, development of one-pack anion waterborne polyurethane are reviewed.The possible developing trends of one-pack anion waterborne polyurethane are pointed out that single component coating will be forwarded to coatings of multi-binders combination and multiple functions;The study of modified waterborne polyurethane will be emphases and focus in the near future.  
        关键词：Internal emulsification;Anion;Waterborne polyurethane;Leather finishes   
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        发布时间：2022-09-18
      • Qi-Shan HUANG,Qing LIU,Zhi-xue WENG,Zu-ren PAN
        Vol. 14, Issue 6, Pages: 66-71(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.009
        摘要：The effect of diffusion on radical polymerization is discussed from the microscopic level to the macroscopic level.Diffusion theory of micromolecule and macromolecules is narrated and is considered as the clue which illuminate the model about diffusion phenomenon in radical polymerization.Viscosity model, Scaling Theory model or Entanglament Theory model, Free Volume model and other models based on the level of microscopic molecule are discussed.  
        关键词：Radical polymerization;Diffusion   
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        发布时间：2022-09-18
      • Jun-zi ZHAO,Zhi-xue WENG
        Vol. 14, Issue 6, Pages: 72-77(2001) DOI: 10.14028/j.cnki.1003-3726.2001.06.010
        摘要：The main four approaches to improve the anti-electrolytic property of superabsorbent polymer were reviewed in this paper, including incorporation of nonionic monomer or longchain hydrophobic monomer, inproving the hydrophilic property of polymer, and synthesis and application of polyampholyte.Copolymerization of nonionic monomer, for example acrylamide, with AA is a usual way, but the effect is very limited.Improving the hydrophilic property of polymer is an effective way for the synthesis of oil in water emulsion thickener, the methods of improving the hydrophilic property of relevant monomers were also discussed.Incorporation of longchain hydrophobic monomer is a new and more effective way to improve the anti-electrolytic property of superabsorbent polymer;Considering different modes of polymerization, this method was reviewed in great details. The synthesis and application of polyampholyte, which exhibits antipolyelectrolyte behavior in solution, were also reviewed;but the cost of this approach is relatively higher.  
        关键词：Superabsorbent polymer;Anti-electrolytic property;Nonionic monomer;Hydrophilic;Longchain hydrophobic monomer;Polyampholyte   
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        发布时间：2022-09-18
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