最新刊期
      卷 14 ， 期 2 ， 2001
      • Jian-yuan HAO,Xian-mo DENG
        Vol. 14, Issue 2, Pages: 1-12(2001) DOI: 10.14028/j.cnki.1003-3726.2001.02.001
        摘要：The recent development of modification of bacterial poly (β-hydroxybutyrate) (PHB) by chemical and physical methods is reviewed in this article. The physical modification here is referred to simple blending, while the chemical methods include Reactive Polymer Blending (RPB) and modification based on PHB macromers due to both of them involving chemical reactions. Of all simple PHB blend systems, totally degradable blends are quite different from disintegrated blends. Applications of totally degradable blends are ultimate trends to resolve the environmental problems in a long run,while at present their practical applications mainly focus on biomedical fields. The miscibility, thermal behavior, crystallinity, mechanical and degradation properties are systemically summarized in this article. Furthermore, it has been pointed out RPB is a useful method to improve miscibility of PHB blends, and the modification based on PHB macromers and the interpentrating technique are two effective ways to modify PHB and construct newly functional biomedical materials. These researches represent the new trends of PHB modification work.  
        关键词：Poly (β-hydroxybutyrate);Chemical modification;Physical modification   
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        发布时间：2022-09-18
      • Yan-feng LI,Jun-rong LI,Lian-di FU
        Vol. 14, Issue 2, Pages: 13-17,23(2001) DOI: 10.14028/j.cnki.1003—3726.2001.02.002
        摘要：Enzyme immobilization was considered as one of very promising biotechnology,immobilized enzyme has been widely employed in the biochemistry,biotechnology,bioengineering,biomedical engineering and so on,it would play an important part in the sustainable development of human society.This paper would review the recent progress in the preparations and applications of immobilized enzymes.  
        关键词：Enzymes;Immobilized enzymes;Enzymatic reaction;biotechnology;Bioengineering   
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        发布时间：2022-09-18
      • Hong-xia YAN,Rong-chang NING,Xiao-yan MA
        Vol. 14, Issue 2, Pages: 18-23(2001) DOI: 10.14028/j.cnki.1003—3726.2001.02.003
        摘要：We review the recent development in self-lubricating composites of heat-resisting polymer such as PTFE、PEEK、PPS and PI in this paper.Some Suggestions for future study of these self-lubricating composites are proposed as well.  
        关键词：Heat-resisting polymer;Self-lubricating composites;Friction;Wear   
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        发布时间：2022-09-18
      • Xian-kui HU,Shao-quan LIN,Zhen-xing LIU,Kai-cai FENG
        Vol. 14, Issue 2, Pages: 24-29(2001) DOI: 10.14028/j.cnki.1003—3726.2001.02.004
        摘要：The research on preparation and structure of redox activated carbon fiber was reviewed.The effects of the redox capacity and the redox theory of activated carbon fiber were also summarized.Finally the prospect of the redox activated carbon fiber was briefly discussed.  
        关键词：Activated carbon fiber;Redox capacity;Preparation;Structure;Redox theory   
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        发布时间：2022-09-18
      • Jia-fang WANG,Wen-gong ZHANG
        Vol. 14, Issue 2, Pages: 30-36(2001) DOI: 10.14028/j.cnki.1003—3726.2001.02.005
        摘要：In this paper, based on the synthesis methods, the organic/inorganic hybrid materials with nonchemical bonds between two phases by sol-gel process are reviewed, and the future development trends are forecasted.  
        关键词：So-l Gel Process;Organic/Inorganic Hybrid Materials;Non-chemical bond   
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        发布时间：2022-09-18
      • Yong-hui TIAN,Wei-wei LIN,Jun-yi NAN
        Vol. 14, Issue 2, Pages: 37-42,49(2001) DOI: 10.14028/j.cnki.1003-3726.2001.02.006
        摘要：In this paper,the recent advances of chiral conductive polyaniline in preparation,helical conformation, applications are reviewed.  
        关键词：Polyaniline;Chirality;Conductivity;Cicular dichroism spectra   
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        发布时间：2022-09-18
      • He-sheng LIU,Zhi-gang TU,Yan-ping SUN,Zhong-xu BAO
        Vol. 14, Issue 2, Pages: 43-49(2001) DOI: 10.14028/j.cnki.1003—3726.2001.02.007
        摘要：The methods used to analyze polymer melt flow in extrusion dies are reviewed. The emphasis is placed upon the numerical methods,including finite difference method, finite element method, boundary element method and so on. Also the geometric and mathematic simplifications adopted in analysis of polymer melt flow in extrusion dies are evaluated.  
        关键词：Polymer extrusion;Flow field;Numerical method;Finite element method.   
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        发布时间：2022-09-18
      • Feng-chao XIE,Qing-ling ZHANG,Jie-ping LIU,Tian-bai HE
        Vol. 14, Issue 2, Pages: 50-56(2001) DOI: 10.14028/j.cnki.1003-3726.2001.02.008
        摘要：General characters of soft matter and its development were introduced first.And then the soft matter characters of polymer,the pronounced responses to the weak influences,were revealed from research works on polymers existed.External fields modulated structure,property and function of polymers were reviewed based on the view of soft matter characters of polymers of the pronounced responses to the weak influences. Suggestion for the future polymer research based on the soft matter concept was raised also.  
        关键词：Soft matter;Confinement;Block copolymer;Liquid crystal polymer   
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        发布时间：2022-09-18
      • Lai-qiang YING,Gang LI,Yu-ying ZHAO,Dong-mei CUI,Tao TANG,Ying-tai JIN
        Vol. 14, Issue 2, Pages: 57-61(2001) DOI: 10.14028/j.cnki.1003-3726.2001.02.009
        摘要：The catalyst system of the stereoregular polymerization of methyl methacrylate are reviewed briefly.The recent developments of polymerization of methy methacrylate with lanthanocene catalyst are reviewed in detailed.The research trend in this area is predicted.  
        关键词：Methy methacrylate;Stereoregulation;Lanthanocene;Polymerization   
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        发布时间：2022-09-18
      • Yuan JIANG,Li-heng WU
        Vol. 14, Issue 2, Pages: 62-68(2001) DOI: 10.14028/j.cnki.1003-3726.2001.02.010
        摘要：Applications of infrared spectroscopy in the structural study of Poly (Ethylene Terephthalate) (PET) fibers in recent years have been reviewed.Some techniques of sample preparation for infrared measurement have been introduced.Characterizations and applications of the structural parameters,such as conformers contents,chain orientation,folded chain contents,and the relationship between these parameters and yarn properties haven been summarized.  
        关键词：IR;PET fiber;Conformation;Orientation;Folded chain   
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        发布时间：2022-09-18
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