最新刊期
      卷 3 ， 期 1 ， 1990
      • Xiuchang Zhu
        Vol. 3, Issue 1, Pages: 6-11(1990) DOI: 10.14028/j.cnki.1003-3726.1990.01.002
        摘要：Brief introduction of theory, equipments and methods of plasma polymerization. Its applications are also described.  
        关键词：Plasma Polyerization;Methods of polymerization   
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        发布时间：2022-09-18
      • Zhongyue Zhang
        Vol. 3, Issue 1, Pages: 12-18(1990) DOI: 10.14028/j.cnki.1003-3726.1990.01.003
        摘要：The imported technologies of polymer production in China are historically reviewed over a period from the foundation of people's Republic up to the end of 1988. It amounts to 25 species of synthetic polymers with an annual total production capacity of 2985200 tons. Criticisms towards both economical and technological effects are also made.  
        关键词：Imported technology;Review;Polymer production   
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        发布时间：2022-09-18
      • Jiawei Chen
        Vol. 3, Issue 1, Pages: 19-26,33(1990) DOI: 10.14028/j.cnki.1003-3726.1990.01.004
        摘要：This review covers the development, recent research progress about the synthesis of insect sex pheromones on solid phase. C. C. Leznoff, et. al. have synthesized a large scale of insect sex pheromones on solid phase. He used polymeric trityl chloride as monofunctional protecting reagent of diol.But Chan Tak Hang, et. al. changed the polymeric protecting reagent into polymer -bound triphenyl chlorosilane. Its yield is higher than before. Ghen Jia Wei, et. al. modified above two methods: simplified the steps, only seized the key step on solid phase. The yield also increased much more than above route.  
        关键词：polymer-support;solid phase synthesis;polymeric wittig reagent;polymeric protecting reagent;insect sex pheromone   
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        发布时间：2022-09-18
      • Dingsheng Yu
        Vol. 3, Issue 1, Pages: 27-33(1990) DOI: 10.14028/j.cnki.1003-3726.1990.01.005
        摘要：A new statistical theory on the Step-Growth Polymerization—recursive approach developed by Macosko and Miller has been introduced and reviewed. The approach relies on the first order Markovian statistical character of Step-Growth Polymerization process and on the recursive nature of this type of chain. It is applicable to calculate directly average values of molecular weight, chain length and sequence distribution in complex linear copolymerization system. This method has the advantages of simplieity and universality compared with other methods.  
        关键词：Statistical Theory;Step-Growth Polymerization;Recursive Approach   
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        发布时间：2022-09-18
      • Yushu Gao
        Vol. 3, Issue 1, Pages: 34-39(1990) DOI: 10.14028/j.cnki.1003-3726.1990.01.006
        摘要：Field-Flow Fractionation is a relatively new technique with considerable potential in the field of macromolecular separation. The general principles and development of FFF are briefly presented. Besides ordinary FFF, which has been used as a useful separation method, some new opertional modes and new combined subtechniques are introduced.  
        关键词：Field-Flow Fractionation;Analytical separation   
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        发布时间：2022-09-18
      • Xingui Li
        Vol. 3, Issue 1, Pages: 40-45,5(1990) DOI: 10.14028/j.cnki.1003-3726.1990.01.007
        摘要：Synthesis, structure, liquid-crystallinity.thermoelasticity, photoelasticity, viscoelasticity and permeability of polymeric liquid-crystalline elastomers are systematically reviewed. It is suggested that polymeric liquidcrystalline elastomers are high performance polymers which exhibit several particular properties.  
        关键词：Liquid-crystalline elastomer;Synthesis;Structure;Property   
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        发布时间：2022-09-18
      • Shuojian Jiang,Mingqian Li
        Vol. 3, Issue 1, Pages: 46-50(1990) DOI: 10.14028/j.cnki.1003-3726.1990.01.008
        摘要：Syntheses, properties and uses of (meth)acrylic acid polyalicyclic esters and their polymers are reviewed.  
        关键词：Meth acrylic acid polyanlicyclic esters;Acrylic acid polyalicyclic esters;Kinetics of polymerization;Copolymerization;Coatings;Adhesives;Transparent materials   
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        发布时间：2022-09-18
      • B. Philipp,W. Wagenknecht,I. Nehls,M. Schnabelrauch,D. Klemm
        Vol. 3, Issue 1, Pages: 53-61(1990) DOI: 10.14028/j.cnki.1003-3726.1990.01.010
        摘要：In this paper, the derivatizing and non-derivatizing organic solvents for cellulose with special accentuation of dipolar-aprotic, O-basic solvent systems, are surveyed and the present state of knowledge on homogeneous acylation, alkylation and graft polymerization of cellulose in both categories of solvents is reviewed briefly. Recent results of the authors' work are then presented on the acylation of cellulose to anionic esters (sulphate and phosphate), especially in the derivatizing solvent system "N2O4/DMF". Finally, the advantages and the shortcomings of homogeneous cellulose derivatization inthe new organic solvents ' are considered in a general discussion, accentuating the possible control of regioselectivity of substitution and the important role of the steps of after-treatment in determining product properties.  
          
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