磁性高分子复合微球去除重金属的研究进展

磁性高分子复合微球是近年来受到广泛关注的新型功能材料。本文介绍了磁性高分子复合微球的制备、特性、结构和组成。综述了磁性高分子复合微球及改性后的磁性高分子复合微球对水处理中重金属的去除研究,并对磁性高分子复合微球对重金属处理的研究进展做了总结与展望。     

磁性生物高分子微球的研究

生物高分子磁性微球是一种新型功能材料,在化工、生物工程、生物医学等许多方面有良好的应用前景。对磁性高分子微球的研究进展进行了综述,介绍了各类微球的制备方法及相关原理,并对磁性高分子微球的未来研究方向进行了展望。在此基础上,概述了生物高分子磁性微球的结构、性质及在固定化酶、靶向药物、细胞分离与免疫分析等领域的应用。     

磁性高分子复合微球的研究进展

磁性高分子复合微球是粒径在纳米级至微米级,通过适当方法使有机高分子与无机磁性物质复合起来形成的具有一定磁性及特殊结构的微球。磁性高分子复合微球兼具高分子材料的功能特性和无机纳米粒子的磁响应性,可以在外加磁场作用下快速方便的分离。因此,磁性高分子微球作为一种新型的复合功能材料,在生物化学、靶向药物、化学工业、分离工程、水处理等诸多领域显示出了广泛的应用前景。本论文主要综述了磁性高分子复合微球的制备方法和应用领域,并对前景和存在的问题进行了分析和展望。     

磁性微球的制备及其在水处理中的应用

概述了磁性微球的制备方法,同时对水处理用磁性微球的特点及其近年来在水处理中有机物检测、吸附剂和絮凝剂、固定化酶及微生物固定化载体方面的应用现状进行了详细介绍,提出了该领域磁性微球今后的研究方向。     

聚合物微球的功能化及应用

聚合物微球是一种性能优良的高分子材料,微球的功能化更是研究的热点。本文对微球功能基团化、复合微球、多孔微球等几种常见功能化微球的特点做了简要概括;简述了微球在生物医学、分离方面、化学工业及分析化学方面的应用。对功能化微球的研究前景和方向提出展望;以期为功能化微球的研究、应用提供参考。     

纳米磁性高分子复合微球的制备及在分离工程中的应用

在总结国内外有关磁性高分子微球研究成果基础上，介绍纳米磁性高分子复合微球的制备方法，重点阐述核-壳式结构和三明治式结构纳米磁性高分子复合微球制备的最新研究进展，概述了磁性高分子复合微球在分离工程中的应用情况，并对磁性高分子微球的未来研究方向进行展望。     

磁性壳聚糖的改性研究及其在废水处理中的应用进展

磁性壳聚糖微球具有成本低、无毒、易降解及易回收等特点,广泛应用于多个领域。本文在介绍磁性壳聚糖微球的基本特点及水处理机理的基础上,重点介绍磁性壳聚糖的改性研究现状及其在水处理领域的应用进展,并对未来的磁性壳聚糖改性研究给出了建议。     

高分子磁性微球的研究进展

综述了磁性高分子微球的最新研究进展,并介绍了高分子磁性微球制备方法中比较经典的几种,并比较了他们各自的优势和不足。并对高分子磁性微球的研究方向的未来发展进行了展望。     

亲水性高分子磁性微球的合成和应用研究

对近年来国内外有关亲水性高分子磁性微球的研究成果和发展现状进行了综述,具体讨论了包埋法、单体聚合法及原位法等常用的合成制备方法及其优缺点,指出反相(微)乳液聚合是制备亲水性聚合物微球的有效方法。分析了亲水性高分子磁性微球在酶固定化和实现靶向给药等方面的应用及存在的问题,对磁性微球的发展前景进行了展望。     

功能化高分子微球的制备和应用

综述了功能化高分子微球的合成方法和应用领域。用于功能化高分子微球的一般制备方法可以分为直接制备合成带有功能基团的微球及在现有微球上引人功能基团两种,前者包括乳液聚合、悬浮聚合和分散聚合等,而后者有种子聚合法和微球功能化等方法。并对上述方法的特点进行了总结和比较。此外还对各种微球在化工、生物制药等方面的应用作了介绍.     

磁性微球的应用研究进展

介绍了磁性高分子微球在废水处理、固定化酶、药物载体、细胞分离等方面的应用,并对磁性高分子微球的发展趋势进行了展望。     

磁性壳聚糖微球的研究进展

磁性氧化铁纳米粒子（Fe3O4,γ-Fe2O3等）因具有尺寸小、超顺磁性和低毒性等特点,已经引起了生物化工、医药工业研究领域的广泛关注。磁性壳聚糖微球具有表面非常光滑的球形结构。近年来,已经制备出了平均粒径在10～2.5×105 nm之间的磁性壳聚糖微球,并在生物医药、食品工程和污水处理等许多领域已经取得了初步的应用,特别是在污水处理和酶固定化领域。本文综述了近年来磁性氧化铁纳米粒子和磁性壳聚糖微球的制备方法、磁性壳聚糖微球的改性方法及应用的最新研究成果。     

Regeneration Research of Porous Magnetic Microspheres during Treatment of Wastewater Containing Cationic Dyes

The application feasibility of porous magnetic microspheres in the removal of cationic dyes from wastewater was investigated. Various desorption solutions were employed for the recovery of cationic dyes from absorbents and regeneration of porous magnetic microspheres. The results showed that 1 M NaCl or 1 M KCl in water/methanol co-solvent had excellent desorption ability for methyl violet. This fact was further demonstrated in the removal cationic gold yellow from its aqueous solution. Overall, this provided a simple methodology for the treatment of wastewater containing cationic dyes and the regeneration of porous magnetic microspheres.     

高分子微球的制备及应用研究进展

高分子微球材料具有提高材料强度和寿命,以及可作为反应物微存储器、微分离器等很多优良的应用特性。本文综述了近年来不同尺寸高分子微球的制备工艺以及性能,介绍了其在生物医药、食品工业、废水处理以及涂料领域中的应用进展,并展望其研究和开发前景。     

药物载体磁性高分子微球的制备及应用研究进展

介绍了药物载体磁性高分子微球的研究现状,总结了常用的制备方法及应用进展,展望了磁性高分子微球的发展前景。     

Preparation of styrene-based, magnetic polymer microspheres by a swelling and penetration process

A swelling and penetration process is proposed to prepare magnetic polymer microspheres. Micron-size polystyrene (PS) particles were swollen in an aqueous solution of N-methyl-2-pyrrolidone (NMP) and then mixed with superparamagnetic iron oxide nanoparticles. The magnetic nanoparticles were able to diffuse into polymer microspheres and were entrapped within the polymer microspheres. The saturation magnetization of resultant magnetic polymer microspheres increased as increasing magnetic nanoparticle concentrations were added to the swelling mixture. A higher ratio of NMP-to-water led to a greater swelling but a larger loss of polymer mass due to polymer chain dissolution in the NMP solution. Sodium dodecyl sulfate (SDS) in the NMP aqueous solution significantly enhanced the swelling and penetration process. The use of SDS could not only shorten the process time but also lower the required NMP concentration. The proposed method also worked well in preparing magnetic polymers microspheres with other styrene-based copolymer beads like poly(styrene–glycidyl methacrylate) (PS–GMA).     

Preparation and characterization of chitosan-poly(acrylic acid) polymer magnetic microspheres

A modified method to prepare chitosan-poly(acrylic acid)(CS-PAA) polymer magnetic microspheres was reported in this paper. First, via self-assembly of positively charged CS and negatively charged Fe₃O₄ nanoparticles, magnetic CS cores with a large amount of Fe₃O₄ nanoparticles were successfully prepared. Subsequently, the AA monomers were polymerized on the magetic CS cores based on the reaction system of water-soluble polymer-monomer pairs. These polymer magnetic microspheres had a high Fe₃O₄ loading content, and showed unique pH-dependent behaviors on the size and zeta potential. From the magnetometer measurements data, the CS-PAA polymer magnetic microspheres also had superparamagnetic property as well as fast magnetic response. A continuous release of the entrapped ammonium glycyrrhizinate in such polymer magnetic microspheres occurred, which confirmed the potential applications of these microspheres for the targeted delivery of drugs.     

磁性微球的制备

在总结近年来国内外有关磁性微球研究成果的基础上,对磁性微球进行了分类,着重对高分子磁性微球的几种主要制备方法和工艺过程进行了概述.     

Preparation and characterization of micron‐sized non‐porous magnetic polymer microspheres with immobilized metal affinity ligands by modified suspension polymerization

A novel preparation method of micron‐sized non‐porous magnetic polymer microspheres with immobilized metal affinity ligands was developed. A modified suspension polymerization of methacrylate (MA) and divinylbenzene (DVB) was performed in the presence of oleic acid‐coated magnetic Fe₃O₄ nanoparticles to obtain magnetic poly (methacrylate‐divinylbenzene) (mPMA‐DVB) microspheres. Through ammonolysis using ethylenediamine (EDA) and subsequent carboxymethylation with chloroacetic acid, magnetic polymer microspheres with chelate ligands of iminodiacetic acid (IDA) were obtained. Charging with copper ions resulted in magnetic polymer microspheres capable of binding proteins that display metal affinity. The morphology, magnetic properties, and composition of magnetic polymer microspheres were characterized with scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), and Fourier transform infrared spectroscopy (FTIR), respectively. Bovine hemoglobin (BHb) was adopted as a model protein to investigate their affinity adsorption capacity. It was found that the adsorption capacity was as high as 168.2 mg/g microspheres and with rather low non‐specific adsorption. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 2174–2180, 2005     

高分子磁性微球的制备及其在工业废水处理中的应用

在总结近年来对高分子磁性微球研究的基础上,对高分子磁性微球的制备方法进行了总结,阐述了高分子磁性微球在工业废水处理中的应用现状。