超高交联吸附树脂的合成及应用研究

简要介绍了超高交联吸附树脂以联苯二氯苄为初始原料,通过傅-克Friedel-Crafts烷基化反应合成出自聚超高交联树脂。其自聚超高交联树脂合成出性能更加强大、价格特别低廉并具有其他超高交联吸附树脂的特点。综述了超高交联吸附树脂的合成方法、化学修饰及工业应用的研究进展,并对其发展趋势进行了展望。     

复合功能树脂NXD-2对水中邻苯二甲酸单丁酯的去除性能

酞酸单酯是水体环境中一类新型的环境激素污染物。以含叔胺基的复合功能树脂NXD-2为吸附剂,以邻苯二甲酸单丁酯（MBP）为目标污染物,通过吸附等温线、热力学、动力学和柱吸附脱附实验,考察了NXD-2对MBP的吸附性能。研究结果表明,NXD-2对MBP的吸附以氢键作用为主,在288～313 K的温度范围内,平衡吸附量随温度的升高而升高;升高温度有利于加快NXD-2对MBP的去除速率。柱吸附脱附研究表明,在进水浓度为300 mg·L^-1的高浓度条件下,吸附出水的前100 BV中,溶液中MBP的浓度低于检测限（10 mg·L^-1）,说明NXD-2对MBP具有较高的处理深度;同时NXD-2具有较好的脱附效果,脱附体积达到20 BV时,脱附率接近100%。因此,复合功能树脂NXD-2作为一种吸附剂,在水体中酞酸单酯的去除方面具有良好的应用前景。     

Synthesis of functionalized polymeric adsorbent selective to cobalt

Amino derivative of chloromethylated polystyrene resin was synthesized and functionalized by 1,10‐phenanthroline (1,10‐Phen) to yield a novel adsorbent, namely 4‐methylamino‐[N,N‐bis(2,2^′)‐1,10‐phenanthroline] polystyrene ( 4‐MABPPS ). The complete development of novel adsorbent along with its characterization is described in detail. The adsorption ability and selectivity of 4‐MABPPS were investigated for cobalt and zirconium ions so as to efficiently separate cobalt ion impurities from zircalloy cladding material of nuclear reactors. The experimental results showed selective uptake of cobalt by the adsorbent in the presence of zirconium. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

Synthesis of complex polymeric flocculant and its application in purifying water

A novel flocculant was synthesized, a method consisting of a poly(acrylamide‐co‐acrylic acid) complexed with an inorganic coagulant through the chemical bond between metal ions and carboxyl acid groups or amide ligands within the polymer. This complex polymeric flocculant is more readily available for purifying water than any single or mechanical mixture. The mechanism of flocculating is discussed and a practical use performed for wastewater from paper mill. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 76: 2093–2097, 2000     

聚合表面活性剂的合成及其应用

综述了近二十年来聚合表面活性剂的合成及主要应用,详细阐述了国内外对低聚表面活性剂在合成、界面吸附和溶液聚集行为方面的研究进展.已有的研究结果表明,中低分子质量的线性聚合表面活性剂不但具有很高的界面活性,可以使原油/水的界面张力达到超低,而且兼具一定的黏度,在三次采油上将具有很大的应用前景.     

双功能荧光磁性复合物的合成及应用

荧光磁性复合物兼有磁性微粒的快速分离和量子点的优异荧光特性,集选择、标记、分离、检测等功能为一体,在生物、化学、医学等交叉科学领域具有广泛的应用。介绍了磁性纳米颗粒、量子点和荧光磁性复合物的应用前景;综述了用层层自组装法、微乳液法、Stber法等方法制备荧光磁性复合物并进一步阐释了其在细胞分离、药物运输等方面的应用,结合当前的研究现状,分析了其主要的发展方向和仍需解决的问题。     

Synthesis of cationic polymeric adsorbent and dye removal isotherm,kinetic and thermodynamic

Poly(quaternary ammonium salt) (PQAS) as a cationic polymeric adsorbent was synthesized and characterized by FTIR. Isotherm, kinetic and thermodynamic of dye removal from single and binary systems was investigated. Acid Blue 25 (AB25) and Acid Red 18 (AR18) were used. The effect of operational parameters (adsorbent dose, pH, dye concentration and salt) on dye removal was studied. The dye removal followed the Langmuir isotherm and pseudo-first order kinetics. The adsorbent maximum dye adsorption capacity (Q₀) was 2000 and 1667 mg/g for AB25 and AR18, respectively. The thermodynamic data showed that dye adsorption was spontaneous, endothermic, and a physisorption reaction.     

Synthesis of an affinity adsorbent based on silica gel and its application in endotoxin removal

An affinity media for endotoxin removal based on silica gel was prepared by activation with silane coupling agent and subsequent conjugation with histidine (His) as a ligand. The influence of pore size and particle dimension of the silica gel and the grafting conditions such as reaction temperature and concentration of His in solution on the grafting yield of His were studied by means of IR, thermogravimetric analysis and elemental analysis. The results show that the silica gel with a particle size of 200 μm and a pore size of about 12 nm was a good carrier material for the preparation of the affinity adsorbent. Under the optimal conditions, histidine was covalently immobilized on silica gel at about 20 mg/g, with a corresponding maximum endotoxin adsorption capacity q_m in contaminated water of about 1.2 mg/g and an apparent dissociation constant K_d of about 1350 μg/L. The adsorbent had little nonspecific adsorption from a protein-containing solution.     

Preparation of photoresponsive polymeric adsorbent containing amphiphilic polymer with azobenzene moiety and its application for cell adhesion chromatography

In order to develop a new type column chromatography, a polymeric adsorbent was prepared by grafting a photoresponsive polymer containing an azobenzene moiety on the surface of controlled pore glass beads. The polarity of the surface of the polymeric adsorbent was increased by UV irradiation because of trans–cis isomerization of azobenzene moiety. Adhesion chromatography of erythrocytes was carried out using the photoresponsive polymeric adsorbent. The erythrocytes were adhered to the adsorbent in the dark and separated from the adsorbent by UV irradiation. This behavior appears to be caused by the photoresponse of the polarity change on the surface of the polymeric adsorbent. The morphology of the erythrocytes which adhered on the surface of the photoresponsive polymeric adsorbent remained unchanged both in the dark and after UV irradiation. The amount of erythrocytes which adhered to the adsorbent increased with increasing the molecular weight of the grafted polymer and the hydrophobicity of the surface.     

Synthesis and characterization of nanocomposite MCM-48-PEHA-DEA and its application as CO2 adsorbent

Three nanocomposites containing MCM-48-35PEHA-15DEA (35 and 15 as weight percent of amine addition), MCM-48-30PEHA-20DEA and MCM-48-25PEHA-25DEA of mesoporous silica MCM-48 modified by the mixture of pentaethylenehexamine (PEHA) and diethanolamine (DEA) have been synthesized and used to study the adsorption of carbon dioxide (CO₂). They are characterized by low angle x-ray diffraction (XRD), Fourier transform infrared (FT-IR) and Brunauer-Emmet-Teller (BET) analysis. MCM-48-35PEHA-15DEA (as optimized adsorbent) shows CO₂ adsorption capacity of 0.51 (m·mol CO₂/g-adsorbent) at 1 bar and 298 K, much higher than CO₂ adsorption capacity on polyethyleneimine, pyrrolidinepropyl and polymerized aminopropyl loaded MCM-48.     

铑的新吸附试剂的合成及应用

本文用化学键合的方式合成了含胺基硫脲螯合泡塑，详细研究了其在ＨＣｌ，ＳｎＣｌ２，ＫＩ介质中对铑的吸附行为，及共存离子对定量吸附铑的影响。     

Synthesis and application of polymeric fluorescent whitening agents

From p-toluic acid, a series of polymeric fluorescent whitening agents (FWA) was synthesized. In the paper are given the details for the synthesis of the FWA and their intermediates. The products are water-dispersible or water-soluble, have good affinity with hydrophobic fabrics, affect the soil-releasing effect on polyester, soiled or aged cotton fabrics, and can be incorporated into concentrated fabric conditioner, a product type using FWA that is being developed. Polymeric FWA add excellent brightness to polyester and soiled or aged cotton for which the usual anionic FWA have little effect.     

ATRP法合成大分子单体及其在微球制备中的应用

以α-溴代丙酸乙酯(EPN-Br)为引发剂,氯化亚铜(CuCl)与N,N,N′,N″,N″-五甲基二亚乙基三胺(PMDETA)组成的混合体系为催化剂,使甲基丙烯酸叔丁酯(tBMA)进行原子转移自由基聚合(ATRP),得到了端基为溴原子的聚甲基丙烯酸叔丁酯大分子中间体PtBMA-Br。使其末端的Br与甲基丙烯酸发生亲核取代反应,得到甲基丙烯酸封端的大分子单体。FTIR和1H-NMR的分析表明大分子单体结构明确,双键导入率高;再用该大分子单体与苯乙烯分散共聚制得形态规整的高分子微球。     

Grubbs催化剂及其在聚合物基复合材料自修复中应用

对格拉布(Grubbs)催化剂的结构及特性,催化对双环戊二烯的开环复分解聚合反应及其在自修复聚合物基复合材料中的应用开拓,进行了扼要的综述。     

Equilibrium and kinetics of vancomycin adsorption on polymeric adsorbent

Isolation step of vancomycin, a glycopeptide antibiotic, is usually done from fermentation broth filtrate, while its adsorption directly from the whole broth could rationalize the process. The equilibrium and kinetics of vancomycin adsorption from broth supernatant, diluted and whole broth on polymeric adsorbent was studied in this work. Experimental equilibrium data was correlated with Sips, Langmuir, Freundlich, and linear adsorption isotherms. Agreement between measured and regressed data for the first three mentioned models did not vary much and was relatively high. The maximum adsorbed amount for supernatant was higher than for fermentation broths because mycelium particles blocked adsorbent surface. Liquid film mass transfer studies showed that external mass transfer resistance could have been neglected. Diffusion of vancomycin inside adsorbent particles was acknowledged using a nonstructural, homogenous surface diffusion and bidisperse pore models. Model simulations indicated that kinetics of the process could be improved by using smaller adsorbent particles. © 2011 American Institute of Chemical Engineers AIChE J, 2012     

电石炉气的净化工艺及其应用

概述了国内电石炉气利用的情况和制约因素,介绍了新疆天业(集团)有限公司干法除尘、湿法净化组合净化电石炉气技术。经该技术净化后的电石炉气达到了化工及燃料气标准,可用于炭材烘干、替代天然气熬碱、替代部分燃煤发电、烧制石灰等,实现了电石炉气的全部综合利用,具有显著的经济效益和社会效益。     

Synthesis and application of polymeric dyes containing the anthraquinone structure

Two polymeric dyes containing the anthraquinone structure were prepared via solution polycondensation. Their monomers were prepared through reactions between 1,5‐dichloroanthraquinone and nucleophiles. The polymeric dyes were characterized with NMR and thermogravimetry. Their ultraviolet spectra, intrinsic viscosity, and solubility were also measured. Then, the polymeric dyes were applied to the mass coloration of poly(ethylene terephthalate) with good compatibility. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 1252–1257, 2002     

Improvement of glycerin removal from crude biodiesel through the application of a sulfonated polymeric adsorbent material

The proposal of suitable processes for glycerin removal from crude biodiesel is an important task for making the overall biodiesel production process environmentally friendly and economically viable. In this article, we propose a dry purification process for biodiesel treatment with different polymeric materials [chitosan, cellulose acetate, poly(vinyl alcohol) (PVA), and sulfonated PVA]. Except for pure PVA, all of the proposed materials were able to reduce the free glycerin content of crude biodiesel from 0.03 wt % to values lower than 0.02 wt %. When the PVA was sulfonated, the glycerin removal increased from 12 to 82% compared that of pure PVA. The glycerin content in the biodiesel sample treated with sulfonated PVA was 0.0055 wt %. Mid‐IR spectrometric analysis showed that the sulfonation of PVA increased the band due to H? O? H stretching vibrations; this enabled greater hydrogen bonding between glycerol and the ? SO₃? groups of the sulfonated adsorbent. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45330.     

Graphene oxide and its application as an adsorbent for wastewater treatment

Graphene oxide, particularly as magnetic particles, has recently been used as an adsorbent for wastewater treatment in applications such as heavy metals separation (mercury, cadmium, copper, chromium, arsenic) and also organics (antibiotics, dyes, i.e. Reactive black 5, etc.). Selected examples will be given in the present review—mostly from the literature. The following themes are examined among others: the synthesis route (impregnation, co‐precipitation), kinetics of adsorption, thermodynamics, isotherm studies and applications in comparison with other adsorbents. © 2013 Society of Chemical Industry     

Functionalized polymeric membrane with aquaporin using click chemistry for water purification application

A new type of aquaporin‐based biomimetic water purification membrane is fabricated using a propargyl functionalized β‐sheet peptide (FBP1). FBP1 is demonstrated to bind to aquaporin and form a stable protein–peptide complex in aqueous solution, as well as covalently conjugate with azide group. Substrate starting material, polysulfone (PSU), is modified with ～1.05 azide group per repeating unit and casted into a thin film substrate with appropriate pore size structure using non‐solvent induced phase separation technique. Protein–peptide complex then is clicked onto the substrate using an in‐house built circulating system. The successful immobilization is verified by surface chemical composition analysis and surface morphology analysis. The preliminary salt rejection results show salt rejection improvement from 5% of control membrane to 12.5%. We thus demonstrate a promising method to conjugate a thin layer of membrane protein onto polymeric substrate and well maintain the functionality of membrane proteins. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 46678.