最新刊期
      卷 15 ， 期 1 ， 2002
      • Wei-xiao CAO
        Vol. 15, Issue 1, Pages: 1-5(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.001
        摘要：Diazoresin (DR) synthesized from polycondensation of diphenylamine-4-diazonium salt with formaldehyde is a kind of photosensitive cationic polyelectrolyte. According to our studies carried out recently the behaviors of DR especially its thermo-and photo-reactions ;the properties of complexes formed from DR with anionic surfactants ;the various self-assemblies based on DR have been discussed and the applications of the utra-thin films thereof was also discussed briefly.  
        关键词：Diazoresin;Cationic polyelectrolyte;Self-assembly;Utra-thin film   
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        发布时间：2022-09-18
      • Jian-jun YUAN,Shi-yuan CHENG,Lin-xian FENG
        Vol. 15, Issue 1, Pages: 6-15(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.002
        摘要：In this paper,the self-assembly behaviors of block copolymer in bulk,selective solvent,and thin film were generally reviewed.In particularly,some very recent advances in this aspect were presented.  
        关键词：Block copolymer;Self-assembly.   
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        发布时间：2022-09-18
      • Hong-bin LU,Yu-liang YANG
        Vol. 15, Issue 1, Pages: 16-23(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.003
        摘要：The rheological characteristics of branched polymers, as well as the effects of molecular structure and temperature on them, were reviewed in this paper. The molecular structure with long branches distinctly slows the relaxation process of macromolecules, which have been observed from their shear-softening and the elongation-hardening behaviors. Furthermore. the time-temperature superposition principle was reported invalid in this case, and the temperature dependence of rheological behaviors also displayed certain complexity. Although the modified reptation theory and the coupling model were able to explain some experimental results, the defects of them could exist. As a consequence, the rheological behaviors of branched polymers still need to be further understood by some systematic investigations.  
        关键词：Branched polymers;Melt rheology;Terminal relaxation;Strain-hardening   
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        发布时间：2022-09-18
      • Yan LI,Ming-xia ZHANG,Bin ZHAO,Shi-min ZHANG,Ming-shu YANG
        Vol. 15, Issue 1, Pages: 24-33(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.004
        摘要：Four kinds of nanoreactors including reverse microemulsion, block copolymer, multipores material and layer silicate,which are usually used to synthesize nanomaterials are reviewed. Their research development and application prospective are discussed.  
        关键词：Nanoreactors;Nanomaterials   
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        发布时间：2022-09-18
      • Zhong-yi JIANG,Song-wei XU,Rong GAO
        Vol. 15, Issue 1, Pages: 34-40(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.005
        摘要：Polyethylene glycol(PEG) and its derivatives,due to their good biocompatibility and low immunogenicity, have been widely used in the chemical modification of biomacromolecules.In this paper,the synthesis of polyethylene glycol derivatives and their utilization in biomedical and biochemical fields are briefly discussed, mainly centering on the classification,the synthesis methods,the performance evaluation,the application of polyethylene glycol derivatives.  
        关键词：Polyethylene glycol derivatives;Biomacromolecules;Chemical modification;Synthesis;Application   
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        发布时间：2022-09-18
      • Guo-fa ZHOU,He-sheng LIU,Cheng-hong HE,Chang-wu WEI
        Vol. 15, Issue 1, Pages: 41-48(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.006
        摘要：This paper is committed to analyze the effects of the material parameters and molding process parameters of co-injection on the layer thickness distribution.The emphasis is placed on the effect of the interaction between viscous encapsulation and interfacial instability on the layer thickness distribution.It is proposed that a three-dimensional viscoelastic model is the only way of predicting such an interaction precisely.  
        关键词：Co-injection molding;Layer thickness distribution;Influential element   
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        发布时间：2022-09-18
      • Yun-song YANG,Hong-yun PENG,Guo-lin ZHANG,Guo-rong QI,Shi-lin YANG
        Vol. 15, Issue 1, Pages: 49-56(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.007
        摘要：In this review we focus on the recent advances in biomedical polymer materials and enhancing the transdermal rate of drug by chemical and physical method.The progresses on the study of TTS at home and abroad are also described.  
        关键词：Transdermal therapeutic system;Controlled release;Biomedical polymer material   
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        发布时间：2022-09-18
      • Jiang-Qing PAN
        Vol. 15, Issue 1, Pages: 57-66(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.008
        摘要：Over 2×108 million tons of polymers are produced worldwide every year,of which a large portion needs various types of stabilizers against degradation for longer service life.Atmospheric oxidation of organic materials including polymer,edible oil,food-stuff,petroleum products and lubricants occurs during their synthesis,production,storage,heat processing and end-use applications.There are many methods to prevent this oxidation,and addition of antioxidants is the most effective and convenient one.In this article we reviewed the recent study advances on acting mechanism of antioxidants,the most effective antioxidant system,optimal molecular weight MW,polymeric antioxidant,polymeric bound antioxidant,multifunctional antioxidant and bio-antioxidant.Attention is drawn to a conclusion that combination of primary antioxidant and secondary antioxidant is the most effective mode for protecting organic materials against atmospheric oxidation.This mode is not likely to be displaced by any other mode in the near future.Hindered phenol antioxidants will displace aromatic amine antioxidants which are toxic.Trends in antioxidant development are that toxic antioxidants will be displaced by non-toxic ones,and more attention will be paid to synthesis of antioxidant with optimal MW,polymeric antioxidant,polymer bound antioxidant,multifunctional antioxidants and bio-antioxidants.Applications of antioxidants in the thermal processing of polymers,lubricants,food and medicines are also disscussed.  
        关键词：Antioxidant;Hindered phenol;Aromatic amine;Oxidation of organic compounds;Thermal oxidative stabilisation of polymers   
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        发布时间：2022-09-18
      • Pei-qian YU,Zi-li YU
        Vol. 15, Issue 1, Pages: 67-70,75(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.009
        摘要：This article reviews the process for treating poly (phenylene sulfide) reaction slurry, mainly covers slovent and LiCl(one of the reaction promoters) recovery processes. A perspective of its future is given.  
        关键词：Poly (phenylene sulfide);Reaction slurry;Polar solvent;Reaction promoters;Recovery process   
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        发布时间：2022-09-18
      • Wei LI,Dong-yu FANG,Jian-zhong SUN,Li-feng ZHU
        Vol. 15, Issue 1, Pages: 71-75(2002) DOI: 10.14028/j.cnki.1003-3726.2002.01.010
        摘要：A new model named Polymerization-Regulatory Circuits(PRC) is concerned.This model is similar to the gene-regulatory circuits in the field of biology.Seed-polymerization is analyzed based on the PRC model and experiment method is given.  
        关键词：Gene-regulatory;Polymerization;Regulatory-model   
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        发布时间：2022-09-18
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