最新刊期
      卷 28 ， 期 11 ， 2015
      • Zai-ping ZOU,Xiao-bing LIU,Xiu-li ZHAO
        Vol. 28, Issue 11, Pages: 1-12(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.001
        摘要：Cyclodextrin-based hyperbranched polymers have the advantages of hyperbranched polymers and cyclodextrins. And the combining of them brings special physical and chemical properties for the cyclodextrin-based hyperbranched polymers. It is becoming a research hotspot and applying in some fields. At first, the characteristics of hyperbranched polymers and cyclodextrins are introduced briefly. Then we illustrate the methods to prepare cyclodextrin-based hyperbranched polymers in detail. Furthermore, the applications lately, which involve medicine, biology, novel material and the regulating of physical and chemistry properties, etc, are introduced in this review. Finally, we summarized the development of cyclodextrin-based hyperbranched polymers at home and abroad. New research prospects are expected based on the progress of these kinds of polymers.  
        关键词：Hyperbranched polymer;Cyclodextrin;Self-assembly   
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        发布时间：2022-09-18
      • Bai-yu JIANG,Ai-hua HE,Zhen-xue LIU
        Vol. 28, Issue 11, Pages: 13-19(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.002
        摘要：Polyolefin alloys have attracted lots of attentions due to its excellent comprehensive properties. In this paper, polymerization progresses of polyolefin alloys were reviewed systematically from the aspects of catalyst systems and polymerization processes. The features of polymerization processes of polyolefin alloys were illustrated briefly. Typical polymerization processes based on the reactor granule technology, such as Spheripol process, Catalloy process and Spherizone process, were discussed in detail. It was noted that development of novel polyolefin materials based on the reactor granule technology from the 4th generation catalyst and the multicatalyst reactor granule technology from the two-component catalyst technology will be the researching direction in the future.  
        关键词：Polyolefin alloys;Process;Reactor granule technology   
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        发布时间：2022-09-18
      • Mu-nan QIU,Lei DUAN,Bian-ying WEN
        Vol. 28, Issue 11, Pages: 20-27(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.003
        摘要：With the pervasive application of electrical and electronic equipment,the electromagnetic environment around us has become more and more complex,and the demand of electromagnetic shielding materials increases rapidly.Compared with the traditional metal fillers,carbon-based conductive filler has its own unique advantages,such as wide range of sources,light weight and corrosion resistance; so it has a wide application prospect in the field of polymeric electromagnetic shielding materials.In this paper,the structure,property and characteristics of carbon black,graphite,graphene,carbon nanotubes and carbon fibers are introduced. The research progress on carbon-based conductive fillers modified polymeric electromagnetic shielding materials in recent years are summarized from the aspects of filler shape,surface treatment method and the mixed method.  
        关键词：Carbon-based filler;Polymer;Electromagnetic shielding;Composites   
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        发布时间：2022-09-18
      • Si-yang MU,Jing GUO,Shan-wei QI,Li-jun YANG,Yu-mei GONG,Sen ZHANG
        Vol. 28, Issue 11, Pages: 28-34(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.004
        摘要：The Atom Transfer Radical Polymerization(ATRP) is a new type of controllable/active polymerization technology, which can effectively realize the structure design of the polymer molecular and precise control the polymer molecular structure. In this paper, we firstly introduce latest advances about the preparation methods of the ATRP macromolecular initiator in recent years, such as functional group reaction, coupling reaction and free radical polymerization. Then,we emphatically summarize the structure design of the the polymer through controlling the active position of macromolecules initiators briefly. Moreover, we focus on introducing the latest application of the macromolecular initiator through ATRP reaction in the structure design of the polymer, such as block polymers, comblike polymer, molecular brush polymer, dendritic polymers, branched polymer, star polymer.  
        关键词：ATRP;Macromolecular initator;Molrcular design;Research progress   
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        发布时间：2022-09-18
      • Huan GE,Zhi-guo ZHU,Rui WANG,Rui WANG
        Vol. 28, Issue 11, Pages: 35-41(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.005
        摘要：Absrtact: Much attention has been paid to poly(lactic acid) (PLA) due to its biodegradability and biocompatibility. Stereocomplexed PLA (sc-PLA), prepared through solution or melt-blending PLLA and PDLA, show higher melt temperature (Tm). In addition, the stereocomplexation structure leads to improvements on crystallinity, rate of crystallization, and heat resistance of PLLA and/or PDLA. The review gives an introduction on the research development related to the sc-PLA, focusing on crystallization mechanism, spherulites morphology, thermal stability and biodegradability, etc. Finally, a simple research prospect on sc-PLA is shown from the views of the authors.  
        关键词：Poly(lactic acid);sc-PLA;Crystallization mechanism;Thermal stability   
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        发布时间：2022-09-18
      • Chang-bin TAN,Ying-hong CHEN,Qi WANG
        Vol. 28, Issue 11, Pages: 42-49(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.006
        摘要：The Polyoxymethylene/poly(ethylene oxide)/SiO2 (POM/PEO/SiO2) ternary composite was prepared by solid state shear milling and then micro-injection molded.The microinjection molding (μIM) processing window, the factors that affect the filling behavior in the μIM process as well as the replication performance of the POM/PEO/SiO2 composite micropart were studied. The experimental results indicated that the POM/PEO/SiO2 system showed excellent μIM processability. The micropart with good replication was obtained according to the μIM processing window. The filling time was very short and the cooling speed was extremely high for the composite melt in the μIM process. The injection speed and the mold temperature had pronounced effect on the filling behavior of the melt. However, the effect of nano-SiO2 on the filling behavior was not obvious due to the low nano-SiO2 content.  
        关键词：Polyoxymethylene;Poly(ethylene oxide);Filling behavior;Processing parameter;Microinjection molding   
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        发布时间：2022-09-18
      • Fu-quan LI,Li YAN
        Vol. 28, Issue 11, Pages: 50-55(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.007
        摘要：A series of poly copolymers(P(CPP-SA))with different monomer proportions were synthesized via solid-liquid phase transfer catalytic method using 18-crown-6(18C6) as catalyst. The structures of P(CPP-SA)s were characterized by FT-IR and1H-NMR methods. The viscosity-average molecular weights of P(CPP-SA)s were calculated though the intrinsic viscosities. The reaction conditions were investigated that using 20% 18C6 after 15h the intrinsic viscosity of P(CPP-SA) reached to 1.2dL/g with the viscosity-average molecular weight was 2.02×105. The in-vitro degradation tests of P(CPP-SA)s were carried out in phosphate buffer solution (pH=7.4). The results indicated that the degradation ratioes depended on the monomer proportions. When the CPP/SA was 50/50 (mol/mol), the linear relationship between degradation ratio and degradation time was verified. The application of P(CPP-SA)(CPP/SA=50/50) was well promising.  
        关键词：Copolyanhydride;Phase transfer;Degradation in vitro   
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        发布时间：2022-09-18
      • Kadir AYGUL,Awuti TUNISHAGULI,Nurulla ISMAYI
        Vol. 28, Issue 11, Pages: 56-63(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.008
        摘要：Two types of polyaniline(P1,P2) were synthesized with N, N-dichloro-p-benzoquinone diimine and p-dibromobenzene Grignard reagent using metal Ni (II) complexes as catalyst and through chemical oxidation of aniline respectively. Characterization and performance tests of the copolymers were conducted by Fourier Translation Infrared Spectroscopy (FT-IR), Ultraviolet and Visible Spectrophotometry (UV-Vis), Cyclic Votammogram (CV), charge and discharge analysis, X-ray Diffraction analysis (XRD) and Thermogravimetric Analysis. Results show that the UV-Vis maximum absorption peak of polymer P1 appear at 600nm, while the UV-Vis maximum absorption peak of polymer P2 appear at 443nm. Cyclic Votammogram results indicate that both of the polymers have reversible oxidation-reduction performances, and the p-doped peaks of P1 and P2 appeared at 0.26eV and 0.49eV, respectively.  
        关键词：Polyaniline;Metal Ni (II) catalytic;Oxidative polymerization;Reduction;Doping   
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        发布时间：2022-09-18
      • Xin-huai GONG,Sheng-yun ZHAO,Rui-ye RAO,Liang-bi CHEN
        Vol. 28, Issue 11, Pages: 64-70(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.009
        摘要：Bamboo fiber(BF) was modified with alkali(NaOH) treatment + isocyanate(TDI) treatment to improve the interfacial adhesion of BF/PP composites. The content of the main components were measured, the chemical structures and thermal properties of BF were studied, the mechanical properties, thermal properties and dynamic properties of the composites were investigated, the morphology of fractured composite surfaces were observed by scaning electron microscopy(SEM), and effects of modified BF loading rate on mechanical properties of the composites were also analyzed. The results showed that there formed amine ester bond and showed an increase in width of crystal region and relative crystallinity of BF after complex treatments of NaOH + TDI, the fastest thermal degradation temperature and vicat softing point of the composites were increased by 20℃ and 4.5℃ respectively. The results of dynamic mechanical analysis(DMA) showed that the peak value of tanδ decreased after complex modification. SEM observation revealed that the interfacial adhesion between BF and PP was improved by complex treatment of NaOH + TDI. When BF loading rate was 40%, the comprehensive properties of the composite performed the best, the impact strength, tensile strength and bending strength of the composite were increased by 21.6%, 23.3% and 27.8% respectively, the tensile modulus and flexural modulus were increased by 24.2% and 30.4% respectively.  
        关键词：Bamboo fiber;Interface modification;Polypropylene;Bamboo plastic composite   
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        发布时间：2022-09-18
      • Tian-wen SONG,Yu ZHAO,Wan-guan WANG,Chun-jiao ZHANG,Zheng ZHU
        Vol. 28, Issue 11, Pages: 71-77(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.010
        摘要：Poly(acry acid-co-2-acrylamide-2-methyl propane sulfonic acid)(P(AA/AMPS)) was synthesized by inverse suspension polymerization(ISP).The best reaction condition of the experiment is determined by orthogonal test and single factor analysis.Systematic tests and comparison were taken at water absorption,water retention and repeated water absorption.The results show that P(AA/AMPS) possesses good performence with an absorbency for distilled water of 1753.4g/g and an absorbency for normal saline of 189.64g/g.The polymer has good quality of water retention within a range of temperature.  
        关键词：Super absorbent polymer;Polyacrylic acid;2-Acrylamido-2-methyl propane sulfonic acid;Inverse suspension;Salt resistance   
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        发布时间：2022-09-18
      • Wei-li WU,Yu-wei WANG,Cang-long YANFG
        Vol. 28, Issue 11, Pages: 78-82(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.011
        摘要：The course of plant design and chemical engineering drawing is a professional limited course in the polymer material and engineering of our university, the curricula time is in sixth semester. It is a stronger comprehensive course of theory and practice after the professional foundation courses.The mastery degree of the course is directly related to the quality of graduation design in eighth term. In view of the existent questions in plant design and chemical engineering drawing course teaching, of which it does not have enough time to think, completed design and drawing are similar each other, design specification and figure such are plagiarism and so on. The teaching content, teaching methods, examining ways, etc are made reform exploration and practice. The reform results are that improves the students’ learning quality and teachers’ teaching level.  
        关键词：Plant design;Chemical drawing;Teaching reform;Explore   
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        发布时间：2022-09-18
      • Yan-li LIU,Jian-fang CHEN,Xian-wei HUANG,Yong-jun LIU,Jian-xia QIU
        Vol. 28, Issue 11, Pages: 83-85(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.012
        摘要：According to school characteristics of Hunan Institute of Engineering as an application-oriented institute, we analyzed the talent cultivation modes for the students of polymer materials and engineering, and the problems existed in experiment teaching. To completely change traditional pattern of undergraduate teaching thoughts that experimental teaching is subordinated to theory teaching, we must change the education idea, strengthen talent introduction and cultivation of double-qualified teachers, update experiment teaching contents and ways, adopt some reformation measures such as two-way selection based on market mechanism, and built multiple platforms for full open experiment teaching within the school, for innovation research based on cooperation between the school and enterprises, and for quality control, by means of improving experimental instruments and equipment from the both aspects of software environment and hardware environment. The exploration and pactice in the new mode will help students to master scientific theories by experiments, and use theories for properly guiding the production and scientific research, and is expected to provide reference for experiment teaching reforms in engineering colleges.  
        关键词：School characteristics;Experiment teaching;Talent cultivation modes   
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        发布时间：2022-09-18
      • Yan YANG,Chun-lin LIU,Zhi-dong CHEN,Jin-chun LI,Biao-bing WANG
        Vol. 28, Issue 11, Pages: 86-92(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.013
        摘要：Experimental teaching is an effective form in the colleges of science and engineering talent cultivation, while the colleges undertaking the historical mission of cultivating innovative talents. Based on the background of the cultivation of innovative talents, the new approach was adopted to solve the problem of polymer materials students, such as the low learning enthusiasm and the disconnection between theory and practice. Teaching research and reform was developed to improve the culturing of innovative talents. The purpose is to motivate the students’ interest in learning the subject of polymer materials and overcome the separation of theory from practice. Practice showed that these reform measures can effectively stimulate students’ learning interest, improve practical ability and innovative consciousness, and it is an important way of cultivating students’ comprehensive quality.  
        关键词：Polymer experiment;Teaching reform;Innovative talents   
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        发布时间：2022-09-18
      • Chao MA
        Vol. 28, Issue 11, Pages: 93-96(2015) DOI: 10.14028/j.cnki.1003-3726.2015.11.014
        摘要：The reform and practice of professional basic course has been explored in this paper. From the integration of curriculum content, the implementation of the project teaching, the use of multimedia teaching, the establishment of the network course and the exploration of students’ autonomous learning, the concrete ideas and practices were discussed in "Chemical Basis of Polymer Material" curriculum reform. In addition, the analysis shows the importance of teaching reform. We will strengthen the construction of professional foundation courses to optimize curriculum structure, to create characteristic curriculum and to Implement a network share. Also we’ll emphasize the practicability in the content and the occupational in the teaching practice to meet the needs of excellent technical and skilled personnel training.  
        关键词：Higher vocational colleges;Curriculum reform;Network course;Autonomous learning   
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