最新刊期
卷 20 ， 期 7 ， 2007
- 摘要：Well-defined fluorinated block copolymers have received much attention recently because they exhibit excellent and unique chemical and physical properties, and various promising applications are expected. Fluorinated block copolymers can be classified into two types, one is side chain fluorinated block copolymers and the other is main chain fluorinated block copolymers. Living polymerization is an important method to synthesize block copolymers with well-defined structure, controlled molecular weight and narrow molecular weight distribution. Different fluorinated block copolymers can be synthesized by different living polymerization processes according to the monomers. This article mainly reviews the recent progresses in the synthesis of well-defined fluorinated copolymers.关键词：Fluorinated monomer;Living polymerization;Block copolymers;Fluorinated copolymer
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发布时间：2022-09-18 - 摘要：The recent progress on P (VDF-HFP) -based microporous-gel polymer electrolytes (MGPEs) as polymer electrolytes for lithium ion battery was reviewed in this paper. It mainly includes their preparation methods, modifications, and their developing tendency. With progress on technologies, polymer lithium ion batteries with excellent performance can be prepared.关键词：Polymer electrolytes;Poly (vinylidenefluoride-co-hexafluoropropylene);Ionic conductivity;Polymer lithium ion battery
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发布时间：2022-09-18 - 摘要：The main factor that influences separation efficiency and reproducibility of the protein separations by capillary electrophoresis (CE) is protein adsorption .Several methods involved in this process, including buffer pH, small molecule additives, modification of the capillary inner-wall, were discussed in this review .The focus of this review is to introduce and compare recent advances of two major classes of wall coatings for capillary ———covalently linked polymeric coatings and physically adsorbed polymeric coatings, which were used to eliminate electroosmotic flow ( EOF), tune EOF and prevent protein adsorption .Comparison of performance between these two coatings was also involved in this review .In General, physically adsorbed polymeric coatings are becoming more and more popular owing to its several distinct advantages over covalently linked polymeric coatings .Although great progress has been made, there is still no universal wall coating which can function well for all types of protein analysis .The separation of complex protein samples will still be a challenge .关键词：Capillary electrophoresis;Protein separation;Adsorption;Polymer coatings
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发布时间：2022-09-18 - 摘要：As the science progress, the application areas of thermal conductive plastic become more and more extensive. Especially, the information industries, which have been developing vigorously in recent years, has provided a new development space for the thermal conductive plastic. In this article, the heat conduction properties of polymer material, metallic material and metal oxide compound are contrasted, the heat conduction mechanism of polymer and the heat conduction model suitable for different fillers are introduced. The approach and new research technique to improve the thermal conductive of plastic are discussed. The application research and latest progress on non-insulation and insulation thermal conductive plastic are summarized. Some problems of thermal conductive plastic are pointed out. The application of thermal conductive plastic are prospected.关键词：Thermal conductivity;Plastic;Conduction model;Research method
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发布时间：2022-09-18 - 摘要：Lysine chemically modified chitoan with good water solubility was synthesized in this paper, and the optimizing coordination condition was carried out. Its composition and structure was characterized by FT-IR and 1HNMR, and it was used as matrix to prepare magnetic microspheres. The microspheres were analysised by XPS, TEM, XRD and VSM. The resultes showed that the particles were spherical and uniform in dimension with particle diametrers of100nm, and had good supermagnetic characterization, there were also many amidos on their surface. All the investigation indicated lysine modified chitosan magnetic microspheres would be used as a good gene delivery system in future.关键词：Lysine;Chitosan;Magnetic microspheres;Gene delivery system
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发布时间：2022-09-18 - 摘要：The micro-porous starch, which is hydrolyzed from raw starch by starch enzyme under the starch pasty point, is a new type of modified starch. Some influencing factors in the preparation of micro-pore starch were summarized. The research progress in the above field with enzyme method was discussed. In addition, the perspective of starch-micropored technology with enzyme method was also surveyed.关键词：Micro-porous starch;Enzyme;Modified starch
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发布时间：2022-09-18 - 摘要：Classification of UV-curing waterborne resin is introduced, according to different kinds of hydrophilic groups, the classification and preparation of Self-emulsion UV-curing waterborne polyurethane acrylic resins such as anionic type, cation type and nonionic type as well as the newest domestic and foreign research progress are emphatically introduced, the other correlative research of the UV-curing waterborne polyurethane acrylic resins is summarized, and also the application of UV curing water-borne resin is briefly introduced .关键词：UV-curing;Waterborne resin;Self-emulsification;Polyurethane acrylic resin
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发布时间：2022-09-18 - 摘要：Polysilicone has been widely used in weather resistance, solution resistance, high and low temperature resistance, high hydrophobicity property and high air permeability property. Every synthetic resin has its advantages and disadvantage, some resin’s disadvantage is just the advantage for polysilicone. Polysilicone is used to improve the properties of other synthetic resins. This is of great significance in both polysilicone and synthetic resins industry. So recent years more and more people do the researches about modifying synthetic with polysilicone. This paper simply summarizes the properties, preparation methods and progress in study polysilicone modifying some synthetic resins.关键词：Polysilicone;Synthetic resins;Chemical modification
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发布时间：2022-09-18 - 摘要：Biodegradable polyesters, such as PLA and PLGA, have proven to be very useful protein delivery sustained release vehicle material and can provide prolonged protein release thanks to their good biocompatibility and biodegradability. This review provides an applicable summary of different formulation routes to forming polyesters and their derivatives for the purpose of (1) improving the hydrophilic property of PLGA through introducing molecule having ether bond, such as PEO, PEG, in PLGA and forming PLGA block copolymer; (2) enhancing the adhesion of vehicle and cell by immobilizing the cell-recognizable ligand moiety and/or peptide onto the surface of biodegradable polymer scaffolds and achieving targeted PLGA derivatives; and (3) developing novel branched polyesters PVA-g- PLGA and obtaining zero-order drug release kinetics through changing the acid microclimate in PLGA vehicle and improving the stability of protein inner the vehicle. All of the above PLGA and their derivatives can produce safe, qualified and efficacious vehicle for protein and peptide drug delivery system.关键词：Biodegradable polyesters;Linear PLGA;Targeted PLGA;Branched PVA-g-PLGA
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发布时间：2022-09-18 - 摘要：Some work concerning the construction of elaborate course "Experiments for polymer physics" was introduced in this paper .关键词：Experiments for polymer physics;Elaborate course;Characteristic experiments;Network teaching
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发布时间：2022-09-18 - 摘要：The preliminary plan and actualized blue prints were presented, which was to construct an interact teaching, interpenetrative and flexible polymer science experiment course combined polymer chemistry, polymer physics and polymer process. Students learn from molecular design to synthesize polymer compounds and character properties of the materials, them process them to an utilized produce in this course.关键词：Polymer science experiments;Flexible experiment course;Interactive teaching
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发布时间：2022-09-18
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