最新刊期
      卷 17 ， 期 6 ， 2004
      • Lei CHEN,Zu-ming HU,Zhao-feng LIU
        Vol. 17, Issue 6, Pages: 1-8(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.001
        摘要：Progress in preparation as well as modification of meta-aramid fibers is reviewed based on 401 references.The advantage and disadvantage of dry spinning,wet spinning and dry-jet wet spinning of metaaramid fibers is discussed.The appropriate process of preparing meta-aramid fiber in our country is described.  
        关键词：Meta-Aramid;Fiber;Preparation;Progress   
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        发布时间：2022-09-18
      • Yan-tao WANG,Wei WEI,Jun-feng LIU,Hui ZHANG
        Vol. 17, Issue 6, Pages: 9-14(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.002
        摘要：Polymer bulk heterojunction solar cell based on an active layer of donor/acceptor blends has proven to be a very efficient photovoltaic device.In this paper,recent developments in solar cell used conjugated polymer as an electron donor and C60 as an electron acceptor have been reviewed.The existed problems and the future developing direction were pointed out.  
        关键词：Organic solar cells;Conjugated polymer;Heterojunction   
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        发布时间：2022-09-18
      • Xiao-xuan ZOU,Wen-li DAI,Ji-bo TIAN
        Vol. 17, Issue 6, Pages: 15-21,62(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.003
        摘要：This paper reports the development on models of nonisothermal crystallization kinetic of polymers, especially in nonisothermal quiescent crystallization and shear-induced crystallization,and also discusses some chief models.  
        关键词：Nonisothermal;Kinetics;Crystallization;Model   
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        发布时间：2022-09-18
      • Ying XING,Xu-bo YUAN,Jin CHANG,Shi-hu WANG,Jing SHENG,Xin HOU
        Vol. 17, Issue 6, Pages: 22-30(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.004
        摘要：Since bioerodible polymers may lead targetable and prolonged drug releasing behavior, especially for the drugs which are highly unstable and have short half-life in vivo,bioderodible polymers were widely investigated recently.One of the important directions of designing controlled drug delivery system with bioerodible polymer matrix is using mathematical approaches to simulate or predict the drug releasing behavior. Due to numerous mass transport phenomena and chemical reactions would influence the drug releasing,it would not be reasonable to take all these factors into account.Generally,one mathematical model would only consider several crucial parameters and assume that drug releasing would follow some kinetics.There are mainly two categories of mathematical models:Empirical Models which assume drug release follows zero order process kinetics and Mechanistic Models which consider the influence of chemical and physical phenomena. The aim of this article is to give an introduction of these models and the relating researching progress.  
        关键词：Biodegradable;Bioerodibte;Drug delivery   
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        发布时间：2022-09-18
      • Guo-jun SONG,Jian-jiang LI,Xi-lin SHE
        Vol. 17, Issue 6, Pages: 31-37(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.005
        摘要：The preparation methods and recent researches of polymer nanotubes are generally reviewed in this paper.According to the formation mechanisms and methods,it can be divided into three kinds:(1) porous templates method,(2) tubes by fiber templates,(3) self-assembly method.Achievements of polymer nanotubes prepared by different methods are summarized in recent years.The development of new preparing technologies and application prospects of polymer nanotubes are described.  
        关键词：Polymer nanotubes;Preparation methods;Research progress   
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        发布时间：2022-09-18
      • Feng-xing LIU,Wei-zhuang CHENG
        Vol. 17, Issue 6, Pages: 38-41,67(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.006
        摘要：The present situation and the drug-delivery applications of biodegradable polymers are reviewed in this paper. Polylactide and poly (ε-caprolactone) are emphasized.  
        关键词：Biodegradable polymer;Drug-delivery;Polylactide;Poly (ε-caprolactone)   
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        发布时间：2022-09-18
      • Vol. 17, Issue 6, Pages: 42-62(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.007
        摘要：利用1,5-萘二异氰酸酯(NDI)和1,4-丁二醇(BDO)为均匀硬质分子单体,与不同软质分子单体(聚醚、聚酯、聚硅氧烷)缩合制备多嵌段聚氨酯弹性体,详细研究了硬嵌段相(NDI)弹性体的结构与性能间的关系,发现随着硬嵌段相长度的增加,或者氨基甲酸酯中胺基与聚醚、聚酯、聚硅氧烷中软段氧原子间氢键的减弱,都导致微相分离程度的增加,造成聚合物熔点和熔化热的升高. 硬嵌段相熔化的多峰行为是由于形成了NDI/BDO 半微晶区,在退火时转变为更加有序的结晶微区,当温度高于180℃时,由于氢键的断裂,NDI/BDO 硬嵌段发生分解反应,该过程源于不很有序的硬嵌段半结晶微区. 当温度高于250℃时,发生快速的分解. 在动态力学行为方面,NDI 基聚醚弹性体比其它硅氧烷基的弹性体展示了更高的硬嵌段区的稳定性,同时,在使用温度范围内,也显示出最高的储能模量值,表明刚性对温度的依赖性,以及NDI/BDO 硬嵌段中活性填料的显著影响.  
        关键词：聚氨酯弹性体;亚萘基二异氰酸酯;链段聚氨基甲酸酯;单分散性硬链段;结构与性能之间的关系   
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        发布时间：2022-09-18
      • Xiao-yan LIU,Jin CHANG,Yan-shuang GUO,Xu-bo YUAN,Chun-ling LIU,Xiao-rong LI
        Vol. 17, Issue 6, Pages: 63-67(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.008
        摘要：The immunonanoparticle [HILE6-PLA(5-Fu)-NP] was prepared by "EDC" method crosslinking the monoclonal antibody HILE6with PLA nanoparticles containing 5-Fu [PLA(5-Fu)-NP].The particles were characterized for morphology and structure by scanning electronic microscopy (SEM) and transmission electronic microscopy (TEM).The particle size was determined by Particle Size Analyzer.5-Fu drug content was also examined.ELISA method was used to evaluate the immunoreactivity.The indirect immunofluorescence method was used for evaluation of the selectivity of the INPs.We found NPs have smooth external morphology and the particle size was 191∙0 ± 0∙202 nm,the drug loading was 8∙2%.In the immunonanoparticles, the immunological activity of antibody can reach84% of the original HILE6.HILE6-PLA(5-Fu)-NP could bind the lens epithelia specifically.The result is very beneficial for selectively and longtime killed Lens epithelia cells for preventing posterior capsular opacification.  
        关键词：Immunonanoparticle;PLA nanopartilce;HILE6;Lens epithelia cells;5-Fluorouracil   
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        发布时间：2022-09-18
      • Shou-ai FENG,Bao-feng LIN,Xing-quan LIANG
        Vol. 17, Issue 6, Pages: 68-72(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.009
        摘要：Chitosan is a kind of valuable natural polymer material that received intensive attention in recent years.This paper reviewed the development of the application of chitosan membrane on food preservation. The methods of making chitosan membrane were summarized.Both the properties of chitosan membrane and its preservation effects on the fruits and vegetables were discussed in details.The result indicated that it has great potential to apply chitosan to food preservation.  
        关键词：Chitosan;Preservation;Properties of membrane   
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        发布时间：2022-09-18
      • Li QI,Guang-ji LI
        Vol. 17, Issue 6, Pages: 73-78,98(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.010
        摘要：A comprehensive view of Konjac glucomannan(KGM),the main component of plant Konjac,is introduced in this paper,including its structure,method of purification,physical and chemical properties,its value as drugs and health-care in the field of medical treatment.The progress in the research and development of KGM and its applications in food,chemical,textile,medication and oil industry are reviewed,showing that as an important renewable resource KGM and its derivatives have broad prospects for applications in many fields.  
        关键词：Konjac;Glucomannan;Polysacchrides   
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        发布时间：2022-09-18
      • Zhan-xiong LI,Song-qing TANG,Guo-qiang Chen
        Vol. 17, Issue 6, Pages: 79-82,95(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.011
        摘要：This paper deal with the research and progress of the synthesis of some fluorosilicon monomer and the corresponding fluorosilicon oil.In addition,the relations between the structures and the rich and colorful properties were reviewed.  
        关键词：Fluorosilicon monomer;Fluorosilicon oil;Property   
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        发布时间：2022-09-18
      • Jiu-fen WANG,Hong-yan XU
        Vol. 17, Issue 6, Pages: 83-86(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.012
        摘要：Polymer chemistry is a science of researching on polymerization mechanism and methods,and is a base of polymer science.Accurate concepts and definite conditions of using formulae can help students further understand basic concepts and formulae and resesrch on polymeric design and synthesis.  
        关键词：Polymer chemistry;Basic concept;Basic formula   
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        发布时间：2022-09-18
      • Ya-xin GU
        Vol. 17, Issue 6, Pages: 87-90(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.013
        摘要：Radical polymerization is all important chapter in studying the course of polymer chemistry,in which number-average degree of polymerization is a significiant content.A clear understanding and mastering of the concept is one of keys to study the chapter.In this article,the concept of nurnber-average degree of polymerization was discussed in different styles for various types of termination and chain transfer reactions.  
        关键词：Polymer chemisty;Number-average degree of polymerization;Chain transfer reaction;Kinetic chain length   
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        发布时间：2022-09-18
      • Ping-ping ZHU,Hai-yang YANG,Ping-sheng HE
        Vol. 17, Issue 6, Pages: 91-93(2004) DOI: 10.14028/j.cnki.1003-3726.2004.06.014
        摘要：Based on the correlation between the chain displacement length distribution for macromolecules and the velocity distribution for small molecules,the radial distribution function of the chain displacement vectors could be directly deduced from the Maxwell velocity distribution function.The motion law for macromolecules and small molecules were discussed from the standpoint of quantitative change and qualitative change.  
        关键词：Chain displacement length distribution for macromolecules;Maxwell velocity distribution;Segment;Conformation statistics   
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        发布时间：2022-09-18
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