最新刊期
卷 0 ， 期 0 ， 2020
- 摘要：The funding program in polymer science of National Natural Science Foundation of China in 2010 was summarized.The fora of the strategy on discipline development have been briefly introduced.The guidance for grants in 2011 fiscal year in division of polymer science of Department of Chemical Science was released.关键词：Funding programs of National Natural Science Foundation of China;Development of polymer science in China;Guidance of grants for 2011
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发布时间：2022-09-18 - 摘要：As a kind of important biodegradable material,polylactic acid (PLA ) has been extensively applied in many fields such as biomedicine,fiber,and plastics.In order to improve the properties of PLA, more and more researches on the modification of PLA via the direct copolymerization without lactide intermediate,especially the direct melt copolymerization method for its simpler operation,lower economical cost and better practical result have been reported.Classified as different functional group compounds used in the direct copolycondensation,and combining with the author group’s work on the direct melt copolycondensation of LA,the recent new progress on the direct copolycondensation of LA,especially the direct modification of PLA by small organic molecules with different functional groups,organic macromolecules and inorganic materials is reviewed.In the future,in order to obtain PLA copolymer with desirable and controllable molecular weight,properties and structure,it is a key to make the reaction mechanism of the direct melt polycondensation of LA clear in the research on the direct synthesis of PLA copolymer.关键词：Polylactic acid (PLA);Copolymer;Modification;Direct melt polycondensation;Lactic acid;Reaction mechanism
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发布时间：2022-09-18 - 摘要：Low-dimensional carbon nanofillers ( LDCN) have out standing mechanical properties. It has been reported that adding LDCN into polymers can improve mechanical properties or enhance function of the composites and LDCN can also induce kinds of polymers crystallization. Not only are the crystallization temperatures and cry stallization rates of polymers elevated by the presence of LDCN acting as nucleating agents, but unique crystalline morphology may also be induced to form. There are great significance of theoretical research and practical application to investigate the effect of LDCN on crystallization of polymers. It is expected that kinds of properties of LDCN/polymer composites are improved by regulating crystallinity and crystalline morphology of the polymers.The research progress in LDCN inducing polymer crystallization was summarized in crystallization kinetics and crystalline morphologies. Moreover, their inducing mechanism was also discussed.关键词：Low-dimensional carbon nanofiller;Polymer;Crystallization
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发布时间：2022-09-18 - 摘要：As a new method of living radical polymerization,reversible addition-fragmentation chain transfer (RAFT) polymerization has a lot of advantages.It can apply to a wide range of monomers in a mild reaction condition.Besides,RAFT polymerization can proceed in bulk,solution,emulsion and suspension polymerization.So RAFT polymerization appears to be one of the most promising techniques of macromolecular design.Click chemistry develops in recent years and it is an approach through which large numbers of new compounds can be quickly synthesized by utilizing reliable,efficient and selective chemical reactions.The Combination of RAFT polymerization with click chemistry can be used to synthesize various special structure polymers,which induces more attention of many researchers.This review deals with recent progress in synthesizing special structure polymer via the combination of RAFT polymerization with click chemistry.关键词：Reversible addition-fragmentation chain transfer (RAFT) Polymerization;Click chemistry;Special structure;Controllable architecture
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发布时间：2022-09-18 - 摘要：The melt point of PLA can be increased by nearly 50℃ because of the particular strong intermolecular interaction between poly (L-lactic acid) and poly (D-lactic acid) chains in stereocomplex structure.The special stereocomplex structure improves the heat resistance of PLA,as well as the mechanical properties,crystallinity and hydrolysis resistance.Recently,more and more attention has been paid to the preparation of novel stereocomplex,especially the stereocomplexation between PLA block copolymers.And the mechanism of formation of stereocomplex structure has been studied by Xray scattering,nuclear magnetic resonance,spectroscopy,surface morphology,etc.In this paper,the current research in preparation of novel stereocomplex,properties and characterization of SC-PLA and application prospect are reviewed.关键词：Poly (lactic acid);Stereocomplex;Heat resistance;Hydrolysis resistance;Mechanical property
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发布时间：2022-09-18 - 摘要：Polyimide fiber has become one of the hot topics in the field of hi-tech fibers for its good property.Polymer monomer including dianhydrides (PMDA、BPDA、ODPA、BTDA,etc) ,diamines (ODA、PPD、MPD,etc) and the third monomers (PRM、Cl-PPD、ODA etc) were reviewed in this article. The main spinning technology of polyimide fibers (such as dry spinning,wet spinning,dry-wet spinning, electro-spinning,melt-spinning and liquid crystal spinning) and its research progress were summarized. Meanwhile,major problems of polyimide fibers research at present were discussed.关键词：Polyimide fiber;Polymerization;Spinning;Technology;Progress
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发布时间：2022-09-18 - 摘要：Rosin is mainly obtained from the exudation of pines and conifers,which is an important natural product,also a renewable resource.The characteristic fused ring structure of rosin acids is analogous to that of some aromatic compounds in rigidity.In the current situation,as non-renewable resources such as petroleum dried up gradually,as well as the growing awareness of the growing importance of environmental protection,bio-based synthetic polymer has become a hot research field.As a result,rosin for the synthetic polymer research is causing great attention.In this paper,the application of rosin and its derivatives in polymer synthesis is introduced,including polyester,polyamide,polyimide synthesis,and so on.Application of rosin in polymer synthesis is also prospected.关键词：Rosin;Rosin derivatives;Polymer synthesis;Application
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发布时间：2022-09-18 - 摘要：Polymeric drug has good biodegradability and biocompatinbility.It can be used to control the drug release rate,reduce the toxic side effects and drug resistance,and enhance the stability and effective utilization rate.This article reviews recent research progress of polymers with pharmacological activity and polymeric carrier meterials.Polymeric carrier materials are classified in accordance with chemical combining power as polymeric prodrug and polymeric complex.Comparing with the original free drugs,polymeric carriers can optimize free drugs qualities of pharmacokinetics and pharmacodynamics.At last,the research prospects and the problems in this domain are discussed.关键词：Polymeric drug;Prodrug;Complex;Pharmacological activity
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发布时间：2022-09-18 - 摘要：The non-toxic antifouling compound sodium benzoate (NaB)was encapsulated in polystyrene (PS)microcapsules via an in-liquid drying process, and so dium benzo ate could leach slowly from the antifouling coating matrix. The effect of solvent,temperature and dispersant was analyzed, and the polymer particle size decreases while the reaction temperature deceases, or amount of dispersing agent and stirring speed increases. The release rate of sodium benzoate was determined by standard curve method, compared with the matched group to go ahead study slow release of Sodium benzoate. Antibacterial test also shows that,even in de-ionized water for 120 days, the samples of anti-fouling coatings have obvious inhibitory effect.关键词：Antifouling;Coating;Microcapsule;NaB
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发布时间：2022-09-18 - 摘要：Chitooligosaccharides-Zinc Complex (COS-Zn) was synthesized through the homogeneous reactions with Chitooligosaccharides (COS) as a ligand,Zinc ion as a coordinated ions,and the synthesis process was optimized.Its structure was characterized by infrared spectroscopy (FT-IR) ,differential thermal analysis (DTA) and elemental analysis (EA) ,and the coordination mechanism was discussed.关键词：Chitooligosaccharides;Chitooligosaccharides-Zinc Complex;Synthesis;Characterization
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发布时间：2022-09-18 - 摘要：Optical active synthetic polymers were widely applied based on their chiral structure.The most practical and extensive application of them was using as chiral stationary phases (CSP) in high performance liquid chromatography (HPLC) for the resolution of enantiomers.Recently,optical active synthetic polymers have become necessary separation materials in the fields of synthetic chemistry, analytical chemistry and pharmaceutics.In this paper,the resolution method of enantiomers by CSP in HPLC was briefly introduced.The progress and application of synthetic polymers,which included addition polymers,eapecially polymethacrylates and polymethacrylamide,polyamides and other synthetic polymes,in CSPs for HPLC were reviewed in detail,as well as the future prospect of this field was outlined.关键词：Synthetic polymer;Chiral stationary phase;High performance liquid chromatography;Chiral separation
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发布时间：2022-09-18 - 摘要：Polyhedral oligomeric silsesquioxane is an intramolecular hybrid system based on the chemical bonding,and this single-nanometer scale organic-inorganic hybrid molecular with a regular three-dimensional structure has attracted considerable attention in present researches,furthermore,its unique cage-shaped nanostructure also provides the possibility of the scientific researches to modify the polymers in molecular levels.The structures,properties,synthesis of polyhedral oligomeric silsesquioxane ( POSS) will be reviewed in this paper.Among them,Metal-functionalized POSS,Thiol-functionalized POSS,Fluorine-functionalized POSS and Alkyl halide-functionalized POSS will be mainly discussed,and then we will also forecast the great applied potentials of POSS in the area of organic inorganic hybrid materials and discuss its development trends and existent problems which are expected to be solved.关键词：Polyhedral oligomeric silsesquioxane;Functionalization;Organic inorganic hybrid material
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发布时间：2022-09-18 - 摘要：As a degree course for undergraduates of polymer major,the polymer processing course focuses on both academic teaching and practical teaching.Students should master the basic theory and the primary concept of polymer processing.At the same time,it is also very important for everyone to increase the ability of application the theory and concept on practice.As the basic aim of our university, the capacity of students,acquiring and applying knowledge,can be strengthened through the study of this course.Centering on theoretical foundation of the polymer processing course,the education system of experiment and practice would be established.The independent experimental schemes has been removed,a comprehensive experimental system has been established,which can show the systemic technological procedure of polymer processing for students.Moreover,on the basis of analyzing the characteristics of polymer processing,the diversification and hommization have been concerned in course of designing the education system.It is very important to improve the overall quality of students by reforming the contents of course,teaching and assessment methods.关键词：Polymer processing;Educational reform;Overall quality
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发布时间：2022-09-18 - 摘要：Calculation formula of degree of polymerazation is an important content in studying polycondensation theory.In this paper, the unified formula of number average degree of polymerization
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发布时间：2022-09-18
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