大孔交联聚苯乙烯吸附树脂的合成及其对叶绿素铜的吸附…

通过改变苯乙烯－二乙烯苯共聚物的交联度和使用不同结构的二乙烯苯，合成了树脂Ｉ－Ⅵ，在工业二乙烯苯共聚体系中加入少量丙烯酸甲酯合成了树脂Ⅶ；交联聚苯乙烯经Ｆｒｉｅｄｅｌ－Ｇｒａｆｔｓ酰化反应在其苯环上引入乙酰基制备树了树脂Ⅷ，用物理技术和化学方法表征了树脂的结构。树脂对叶绿素铜的吸附量不仅与其二乙烯苯含量胶有关，还与二乙烯基的位置（间－，对－）异构有关，树脂骨架极性的增加，不利于树脂对叶绿素铜的吸附     

薄壳型手性配体交换HPLC填料的合成及用于DL-氨基酸拆分

将含有少量二乙烯苯的丙烯酸甲酯涂敷于聚二乙烯苯珠体表面上进行聚合，得到了表面涂层树脂，通过红外光谱估算出涂层厚度为~2μm。涂层树脂依次与乙醇胺、环氧氯丙烷和L-脯氨酸反应，得到薄壳型手性配体交换树脂，此树脂的Cu（Ⅱ）络合物作为高效液相色谱的填料对DL-氨基酸进行了拆分。     

含α—羰醛功能基树脂的合成及其对尿素吸附的研究.Ⅰ

本文在研究醛类化合物与尿素反应的基础上，确定含有α－羰醛基的化合物在ｐＨ７．４，３７℃下对尿素有较高的反应活性。将α－羰醛基引入到苯乙烯－二乙烯苯共聚物骨架上，合成出带有α－羰醛基的树脂。实验结果表明，含α－羰醛功能基的树脂在ｐＨ７．４，３７℃条件下与目前临床使用的氧化淀粉相比，具有更大的吸附潜力。本文还研究了吸附条件对该树脂吸附性能的影响。     

非多孔树脂的高效液相色谱填料及其对蛋白质的分离性能

合成并表征了粒度为７μｍ的基于聚（甲基丙烯酸甲酯／二乙烯苯）（ＰＭＭＡ／ＤＶＢ）和在丙烯酸丁酯／二乙烯苯）（ＰＢＭＡ／ＤＶＢ）的两种非多孔树脂。该类树脂可用作高效液相色谱填料的基质，也可直接用于色谱分离。ＰＭＭＡ／ＤＶＢ树脂对于蛋白质的分离具有疏水怀相互作用色谱填料的性能，而ＰＢＭＡ／ＤＶＢ树脂由于其强疏澡性则对于蛋白质的反相色谱是适宜的。基质树脂经ＮａＯＨ溶液水解，就转化成表面含羧甲基的并具有相     

对氟苯乙烯-二乙烯基苯强酸性阳离子交换树脂的合成及其热稳定性研究

以对氟苯乙烯，二乙烯苯为原料合成了强酸性阳离子交换树脂，考察了磺化反应的工艺条件及卤原子，树脂类型对树脂耐热稳定性能的影响。研究表明，对氟苯乙烯－二乙烯基苯共聚体需用发烟硫酸在110℃才可磺化，大孔磺化对氟苯乙烯－二乙烯基苯树脂在190℃水中20h的磺酸基降解率为24．7％，而普通磺酸树脂的磺酸基降解率为53．3％。     

异丙基膦酸单(1-己基-4-乙基)辛酯萃淋树脂吸萃重稀土元素(Ⅲ)

本文研究了异丙基膦酸单（１－己基－４－乙基）辛酯萃淋树脂在盐酸介质中对重稀土元素（Ⅲ）的吸萃平衡，考察了平衡水相酸度对吸附反应的影响，计算了重稀土（Ⅲ）间的平均分离系数，确定了吸附反应的Ｆｒｅｕｄｌｉｃｈ等温吸附方程。该树脂吸附Ｙｂ（Ⅲ）的静态饱和容量为６６．５ｍｇＹｂ／（ｇ．Ｒ），饱和萃合物的ＩＲ谱表明ＰＴ－２萃淋树脂吸附Ｙｂ（Ⅲ）的反应为阳离子交换反应。     

3－氨甲基吡啶树脂的合成及五种氨基吡啶树脂对金铂吸附性的比较

研究了反应物配料比３－ＡＭＰ／Ｃｌ（摩尔比）、反应温度与时间对大孔型３－氨甲基吡啶树脂（３—ＡＭＰＲ）性能的影响规律．在最佳合成工艺条件下制得３－ＡＭＰＲ的功能基含量为３．１６ｍｍｏｌ／ｇ树脂．３－ＡＭＰＲ对ＡｕＣｌ６（２－），ＰｔＣｌ６（２－），ＩｒＣｌ６（２－），ＰｄＣｌ４（２－），ＲｈＣｌ６（３－）的吸附容量分别为８００．８，３８７．８，３８６．３，１３３．０，１０５．５ｍｇ金属／ｇ树脂；配位比分别为１．２９，０．６３，０．６４，０．４０，０．３３。比较了３—ＡＭＰＲ、２－ＡＭＰＲ、４－氨基吡啶树脂（４－ＡＰＫ）、３—ＡＰＲ、２－ＡＰＲ五种树脂对ＡｕＣｌ４－、ＰｔＣｌ６（２－）的吸附性，其中３－ＡＭＰＲ为最佳。     

无定型聚芳醚酮的氯甲基化改性

采用硫酸作溶剂及催化剂,1,4-二氯甲氧基丁烷（BCMB）为氯甲基化试剂,在均相反应体系中对酚酞聚芳醚酮（PEK-C）进行氯甲基化改性。 采用无致癌性的BCMB作为氯甲基化试剂实现了环境友好,并且成本低,效率高。 试验结果表明,反应机理由苯环亲电取代与亲核取代2种反应构成。 为避免交联反应的发生,反应要在较低温度下进行（10~30 ℃）。 在此温度范围内可制得氯甲基化程度达3.4且完全线型的氯甲基化酚酞聚芳醚酮。 通过反应温度及时间可对树脂氯甲基化程度（χCH2Cl-）实施有效的调控。 CMPEK-C的结构由IR和1H NMR进行了表征,测定了CMPEK-C的Tg与χCH2Cl-之间的依赖关系及CMPEK-C的耐热及溶解性能。     

聚（α－蒎烯）环氧化研究

在α－－蒎烯均、共聚研究取得进展的基础上，首次研究了α－蒎烯均聚体环内双键的环氧化反应。内容包括聚（α－－蒎烯）的环氧化反应及ＩＲ、ＮＭＲ表征；影响环氧化反应的各种条件和环氧化产物的摩尔质量、溶解性变化等。结果表明，采用自制过氧乙酸混合液进行环氧化反应，效果良好。通过反应温度和溶液的选择以及反应体系ｐＨ值的调控等，可以不同程度、直至１００％地进行单一环氧化反应，既不发生降解或交联反应，也不产生羰基和羟基，为α－蒎烯树脂的改性、功能化等高值利用提供了新信息。     

界面缩聚法合成双酚A芳香环状聚醚砜

聚芳醚（酮、砜）是一类耐高温、耐溶剂的高性能的聚合材料,具有很好的机械和加工性能,广泛应用于工程塑料及复合材料等领域．线性聚芳醚（酮,砜）一般由亲核取代反应或亲电取代反应在极性溶剂中制得,Ｙｏｓｈｉｏ等［１］报道利用相转移催化法制备聚芳醚砜,近年来,...     

Studies on the thermotropic liquid crystalline polymer. XII. Synthesis and properties of crosslinkable thermotropic liquid crystalline homo- and copoly(ether-ester)s

A series of crosslinkable thermotropic liquid crystalline poly(ether-ester)s and copoly(ether-ester)s was prepared. All of the polymers were crosslinked by thermal treatment or photo-irradiation upon heating. The thermal stability and thermal crosslinking reaction of these polymers were investigated. These polymers also could be crosslinked by copolymerization with vinyl monomers, such as styrene or methyl methacrylate. The crosslinked polymers exhibited thermotropic liquid crystalline behavior after softening by heating. The phase behavior of linear polymers and crosslinked polymers was studied by differential scanning calorimetry (DSC) and an optical polarizing microscope equipped with a heating stage. © 1995 John Wiley & Sons, Inc.     

Synthesis and Characterization of Crosslinked Polymers for Biomedical Composites

Three kinds of low molecular weight unsaturated polyesters containing carbon-carbon double bonds were synthesized by the reaction of poly (ε-caprolactone) diol or D,L-lactide and glycolic acid with maleic anhydride or fumaric acid. These functionalized polymers were thermally crosslinked in the presence of radical initiator to prepare the crosslinked polymers available as a matrix resin for biomedical composites. Hydrolysis of the crosslinked polyesters was investigated in buffer solution at 37°C.     

Styrene-PEG (600) DMA Crosslinked Polymers for Absorption of Oil Derivatives

In this work, styrene (St) based crosslinked polymers were prepared for removal of oil derivatives from aqueous solutions. Polyethylene glycol (600) dimethacrylate (PEG (600) DMA) was used as crosslinker in synthesis of styrene based crosslinked polymers, for the first time. The polymers were characterized by FTIR, SEM, elemental analysis and solvent (toluene, chloroform and fuel-oil) absorption capacities. The effects of different reaction parameters like crosslinker type, diluents amount and the presence of pore forming agent on the absorption properties of polymers were investigated. The polymers synthesized by using PEG (600) DMA have higher solvent absorption capacity than that of synthesized by using conventional crosslinker. Furthermore, the polymers synthesized in the presence of good diluents have higher absorption capacities. The addition of pore forming agent into the reaction medium has also improved the absorption rate of polymers. The absorption capacity of polymers in different solvents is in order of chloroform > toluene > fuel-oil. It was seen that oil derivatives can be removed efficiently from water by the St-PEG (600) DMA polymers.     

Modification and Application of Poly(Ethylene Terephethalate) Nonwoven Fiber Using Octadecyl Acrylate and Acrylic Acid as Oil Sorbers

Three series of crosslinked octadecyl acrylate and acrylic acid copolymers were prepared through suspension copolymerization based on acrylic acid content (10, 30, 50%wt. ratio). Divinyl benzene (DVB) was used as a crosslinker with different weight ratios (1, 4 and 10%). Isopropyl alcohol or dioctyl phthalate and methyl benzoate were used as two different reaction solvents in the presence of ABIN as initiator. The prepared crosslinked copolymers were characterized by SEM, TGA and FTIR spectroscopic analyses. The prepared polymers were coated onto poly(ethylene terephethalate) nonwoven fiber (NWPET). The effect of copolymerization feed composition, crosslinker wt% and reaction media or solvent on swelling properties of crosslinked polymers were studied through the oil absorption tests in toluene and 10% of diluted crude oil with toluene. It was noticed that the maximum swelling of crosslinked copolymers was increased from 30 to 100 g/g after grafting of copolymers onto NWPET.     

Synthesis and metal binding behavior of hydroxamic acid resins from poly(ethyl acrylate) crosslinked with divinylbenzene and hydrophilic crosslinking agent

Porous poly(hydroxamic acid) chelating resin was prepared by the reaction with poly(ethyl acrylate) crosslinked with divinylbenzene and hydrophilic crosslinking agent, and hydroxylamine. The hydrophilic crosslinking agents and diluent used in this article were ethylene glycol dimethacrylate or butanediol dimethacrylate, and 2,2,4-trimethyl pentane, respectively. The characterization of this type chelating resin was carried out by IR spectroscopy, density measurement, and scanning electron microscopy. Various metal binding properties such as extraction, kinetics, and selectivity were investigated with atomic absorption spectrometer and inductively coupled plasma spectrometer. Poly(hydroxamic acid) resins crosslinked with mixed crosslinking agents showed better metal extraction properties and faster adsorption rate than those crosslinked with divinylbenzene alone. And alkali treatment enhances the binding rate for metal ions because of the formation of other chelating ligands or micropores. © 1995 John Wiley & Sons, Inc.     

AB CROSSLINKED POLYURETHANES THROUGH IONIC CROSSLINKING: INFLUENCE OF CROSSLINKING NETWORKS ON PHYSICO CHEMICAL PROPERTIES

Isocyanate-terminated prepolymers were synthesized using poly(tetramethylene oxide)glycol of molecular weight 1000 (PTMG₁₀₀₀) with tolylene-2,4-diisocyanate (TDI). The prepolymers were chain extended with N-methyldiethanolamine (N-MDEA) to form polyurethanes containing tertiary nitrogen. These polyurethanes were crosslinked with bromine terminated polyurethane, poly(urethane-imide), and poly(urethane-siloxane) through the formation of cationomers at tertiary nitrogen sites across the backbone polyurethanes.

The crosslinked cationomeric polyurethanes were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), mechanical analyses, (static and dynamic), and static contact angles measurements. FTIR spectral studies confirms the formation of bromine terminated poly(urethane-imide) and poly(urethane-siloxane), as well as quaternization of the tertiary nitrogen which leads to crosslinking. A comparison of thermal stabilities of crosslinked polymers with respect to the chemical nature of bromine terminated prepolymers (BTP) indicates improved thermal stability for poly(urethane-imide) based ABCP. Stress-strain analysis shows high elongation values for poly(urethane-siloxane) and poly(urethane-imide) based ABCPs. Dynamic mechanical analysis reveals better damping for poly(urethane- siloxane) based AB crosslinked polymers.     

苯乙炔封端的可交联含氟聚芳醚的合成及性能

从光电集成器件对于材料性能的需要出发 ,我们相继合成了一系列可溶性的含氟聚芳醚和聚芳醚酮[1～ 5] .为了满足器件的多层化制备过程以及使器件成型后具有优异的性能 ,本文在间三氟甲基苯取代的聚芳醚 (1 1 F- PAE)中引进可交联的苯乙炔端基 ,合成了可热交联的高含氟量聚芳醚 ,并对其性能进行了初步研究 .1　实验部分1 .1　试剂与仪器　 4-苯乙炔苯酚 (PEP)按文献 [6 ]方法制备 ;3 -氟甲基苯代对苯二酚 (3 F- PH)按文献[2 ]方法制备 ;十氟联苯 ,Aldrich公司 ,99%;无水碳酸钾 ,A.R.级 ,天津化学试剂厂 ;甲苯 ,A.R.级 ,北京化工厂 ;N-…     

Facile synthesis of comb,star, and graft polymers via reversible addition–fragmentation chain transfer (RAFT) polymerization

Reversible addition–fragmentation chain transfer (RAFT) polymerization has been shown to be a facile means of synthesizing comb, star, and graft polymers of styrene. The precursors required for these reactions were synthesized readily from RAFT‐prepared poly(vinylbenzyl chloride) and poly(styrene‐co‐vinylbenzyl chloride), which gave intrinsically well‐defined star and comb precursors. Substitution of the chlorine atom in the vinylbenzyl chloride moiety with a dithiobenzoate group proceeded readily, with a minor detriment to the molecular weight distribution. The kinetics of the reaction were consistent with a living polymerization mechanism, except that for highly crowded systems, there were deviations from linearity early in the reaction due to steric hindrance and late in the reaction due to chain entanglement and autoacceleration. A crosslinked polymer‐supported RAFT agent was also prepared, and this was used in the preparation of graft polymers with pendant polystyrene chains. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 2956–2966, 2002     

THE SYNTHESIS AND CHARACTERIZATION OF Ba-CROSSLINKED POLYMER ANTI-RADIATION MATERIALS

Crosslinked poly(methyl methacrylate) and polystyrene with barium dimethacrylate [Ba(MA)_2] as crosslinking agent have been synthesized. The relationship between X-ray absorbability and the content of Ba(MA)_2 in polymers was investigated. TGA and DSC results indicated that the crosslinked polymers containing barium dimethacrylate have a much better heat stability than pure PMMA or PS. The mechanical properties of the polymers containing barium are improved in comparison with the pure PMMA.     

含苯乙炔的可自交联高温高性能聚芳醚酮的合成与性能

将可交联的苯乙炔结构引入到热塑性聚芳醚酮链中, 并对其交联前后的性能进行了深入研究.