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Synthesis and properties of nickel borate acylate as a new rubber-steel cord adhesion promoter

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Journal of Central South univer.ity of Technology 2001年第4期8卷 244-248页

作者： LI Xiao ru 1,NIE Xi du 2.WU Hai ying 1,CHENG Ben cheng 1 (1 college of Chemistry and chemical Engineering, Central South {2., Changsha 410083, china 2.Hengyang Branch of Hunan {2., Hengyang 412.00, china) college of Chemistry and chemical Engineering Central South University Changsha China Hengyang Branch of Hunan univer.ity Hengyang China

The synthetic method of nickel borate acylate (NBA), a kind of rubber steel cord adhesion promoter (AP), through nickel carbonate, borate and mixed carboxylic acid was studied. The preparation of nickel carbonate could be performed through reaction of nickel sulfate with sodium carbonate in aqueous solution, in which fractional conversion of nickel was more than 99.9%. The mixed nickel carboxylate was prepared by the reaction of nickel carbonate with isooctanoic acid and acetic acid, under strong stirring for 2.h, the mole ratio of these chemicals were 1∶1∶1.1 respectively, and water should be removed completely by adding of inert organic solvent after reaction was finished so as to avoid hydrolysis of tributyl borate in the second reaction. NBA was synthesized by reaction of mixed nickel carboxylate with tributyl borate under strong stirring at 2.0 2.0 ℃ for 6 h. By detection and comparison with 680C product from Manobond Company of England, the NBA synthesized through isooctanoic acid and tributyl borate was very similar to product 680C in IR data, 300% fixed extension strength, tensile strength, hardness and cure curve, and was slightly lower than those of product 680C in tensile failure extensibility and hot air aging. The experimental results show that the prepared NBA can be used as rubber steel cord AP.

关键词： nickel borate acylate adhesion promoter nickel carbonate borate

Effect of surfactants on the structure and photoelectric properties of ITO films by sol-gel method

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Rare Metals 2010年第2期29卷 143-148页

作者： LIU Jiaxiang, WU Da, ZHANG Nan, and WANG Yue college of Materials Science and Engineering, Beijing univer.ity of {2. Technology, Beijing 10002., china college of Materials Science and Engineering Beijing University of Chemical Technology

The Indium tin oxide（ITO） thin film possesses excellent photoelectric properties that enable it to act as an ideal transparent *** obtain high-quality ITO films through sol-gel method, the ionic surfactant monoethanolamine and the non-ionic surfactant polyethylene glycol（PEG） were added to the ITO precursor *** influences of surfactants on the structural and photoelectric properties of ITO film samples were *** patterns indicated that surfactant monoethanolamine contributed to film predominant grain orientation along the（400） *** high transmittance（over 95%） was attributed to the preferred orientation and the grain size expansion of ITO *** showed that the surface particle size and the morphology of ITO films were strongly dependent on the kind of surfactants *** to the shortwave region, the absorption edge of the films exhibited the Burstein-Moss shift.

关键词： surfactants indium tin oxide films sol-gel structure photoelectricity

Synthesis,Spectral and Magnetic Studies of Novel Oxamido Heterotrinuclear Complexes Cu(Ⅱ)-Mn (Ⅱ)-Cu(Ⅱ),Cu(Ⅱ)-Co(Ⅱ)-Cu(Ⅱ)

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chemical Research in Chinese universities 1992年第2期8卷 138-142页

作者： LIU Zong-ming, LIAO Dai-zheng, JIANG Zong-hui and WANG Geng-lin (Department of Chemistry, Nankai univer.ity, tianjin, 300071)Visiting Scholar,Department of Pharmacy, tianjin Second Medical college.tianjin.

Micro-plate magnetic chemiluminescence immunoassay and its applications in carcinoembryonic antigen analysis

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Science china Chemistry 2010年第4期53卷 812-819页

作者： LI ZhiYong1, ZHANG QianYun2. ZHAO LiXia1, LI ZhenJia3, HU GuoMao3, LIN Jin-Ming2.& WANG Shan4 1State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, china 2.epartment of Chemistry, Tsinghua univer.ity, Beijing 100084, china 3Beijing Chemclin Biotech Co., Ltd., Beijing Academy of Science and Technology, Beijing 100094, china 4School of Chemistry and chemical Engineering, Xianyang Normal college, Xianyang 712.00, china State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China Department of Chemistry Tsinghua University Beijing China Beijing Chemclin Biotech Co. Ltd. Beijing Academy of Science and Technology Beijing China School of Chemistry and chemical Engineering of Xianyang Normal college Xianyang China

A micro-plate magnetic chemiluminescence immunoassay was developed for rapid and high throughput detection of carcinoembryonic antigens (CEA) in human sera. This method was based on a sandwich immunoreaction of fluorescein isothiocyanate (FITC)-labeled anti-CEA antibodies, CEA antigens, and horseradish peroxidase (HRP)-conjugated anti-CEA antibodies in mi- cro-plate. The immunomagnetic particles coated with anti-FITC antibodies were used as the solid phase for the immunoassay. The separation procedure was carried out by a magnetic plate adaptor and the luminol-hydrogen peroxide (H2.2.-HRP system was employed for the chemiluminescence detection. The proposed method combined the advantages of the micro-plate reactor and magnetic particle separation technology with the linear range of 5-2.0 ng mL·1. The detection limit of CEA was 0.61 ng mL·1. The coefficient of the variation was less than 7% and 13% for intra-assay and inter-assay precision, respectively. Compared with the commercial micro-plate chemiluminescent kit, the proposed method showed a good correlation.

关键词： micro-plate magnetic chemiluminescence immunoassay carcinoembryonic antigen tumor marker

Mesoporous Si-MCM-48 membrane prepared by pore-filling method

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Science china(Technological Sciences) 2010年第4期53卷 1064-1068页

作者： XU DeKan & FAN YiQun State Key Laboratory of Materials-Oriented chemical Engineering,college of Chemistry and chemical Engineering,Nanjing univer.ity of Technology,Nanjing 2.0009,china State Key Laboratory of Materials-Oriented chemical Engineering College of Chemistry and Chemical Engineering Nanjing University of Technology

Mesoporous MCM-48 membranes were prepared on asymmetric zirconia tubular support with an average pore size of 0.2.μm by hydrothermal *** support should be pretreated with H2. as a pore-filling substance to prevent the sol solution from infiltrating into the support *** SEM showed that the MCM-48 membrane was composed of tightly-connected spherical *** single gas N2.and H2.permeation experiments confirm that crack-free membrane could be prepared by pore-filling method.N2.permeance of MCM-48 membrane,synthesized by secondary growth,can reach 5.66×10-7 mol/Pa·s·m2.and the H2.N2.separation factor was 3.47 under trans-membrane pressure of 0.05 MPa.

关键词： MCM-48 mesoporous membrane pore-filling

Interface-directed sol-gel:direct fabrication of the covalently attached ultraflat inorganic oxide pattern on functionalized plastics

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Science china Chemistry 2010年第1期53卷 173-182,287-288页

作者： GAN ShengHua,YANG Peng & YANG WanTai State Key Laboratory of chemical Resource Engineering college of Materials Science and Engineering,Beijing {2. of chemical Technology,Beijing 10002.,china State Key Laboratory of chemical Resource Engineering college of Materials Science and Engineering Beijing University of Chemical Technology Beijing China

For plastic electronics and optics,the fabrication of smooth,transparent and stable crack-free inorganic oxide films(and patterning) on flexible polymeric substrates with strong bonding strength and controllable thickness from nanometers to micrometers is a key but still remains a *** versatile inorganic oxides,silica oxide film as SiOx is especially important because this semiconductor material could provide crucial properties in devices or serve as a base layer for further multilayer *** this paper,we describe a new interface-directed sol-gel method to fabricate flexible high quality silicon oxide film onto commodity *** resulting crack-free silica film has strong covalent bonding with polymer substrates,homogeneous morphology with ultralow roughness,highly optical transparency,tunable thickness from nm to μm,and easy patterning *** fabrication strategy relies on a novel photocatalytic oxidation reaction by photosensitive ammonium persulfate(APS),which is able to fabricate highly reactive hydroxyl monolayer surface on inert polymeric *** kind of hydroxylated surface could serve as nucleation and growth sites to initiate surface sol-gel *** a result,well-defined SiOx film deposition(gelation) occurs,and patterned hydroxylation regions could be easily utilized to induce the formation of patterned oxide film *** strategy also excludes the requirements of clean room and vacuum devices so as to fulfill low-cost and fast fabrication *** application examples from such high quality SiOx layer onto plastics are given but should not be limited within *** is that oxygen permeation rate of SiOx deposited polymer film decreases 2. times than pristine polymer substrate,which is good for the potential packaging *** other one is that silanization monolayer,for example,3-aminopropyltriethoxysilane(APTES),could be successfully constructed onto silica layer through classical silanization reac

关键词： surface patterning silicon oxide sol-gel polymer surface modification functional coatings

Preparation and Electrocatalytic Activity of Polyaniline-poly (Propylene Oxide) Modified by Pt Nanoparticles

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Journal of Wuhan univer.ity of Technology(Materials Science) 2006年第4期21卷 9-11页

作者：李美超 college of chemical Engineering and Material Science State Key Laboratory Breeding Base of Green Chemistry-Synthesis TechnologyZhejiang University of TechnologyHangzhou 310032China

The preparation and electrocatalytic activity of polyaniline-poly （ propylene oxide ）（ PAN-PPO ） modified by Pt particles （ Pt/ PAN-PPO ） were investigated. Pt/ PAN-PPO was characterized by scanning electron microscopy （SEM） and energy dispersive spectroscopy （ EDS ）. Pt particles on PAN-PPO were in the nanometer range, and dispersed in a three-dimensional distribution on the surface of PAN-PPO film. Compared with polyaniline and glassy carbon modified with Pt particles under the same conditions, Pt/PAN-PPO exhibited a high electrocatalytic activity for lysine oxidation.

关键词： aniline propylene oxide copolymer platinum electrocatalytic activity lysine

Kinetics and Mechanism of the Polymerization of Methyl Methacrylate in a Y(acac)_3/n-BuMgCl System

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chemical Research in Chinese universities 2000年第1期16卷 61-66页

作者： PAN Zhi-da SUN Jun-quan and YANG Shi-lin (college of chemical Engineering, Zhejiang {2., Hangzhou 31002., china) 浙江大学浙江杭州 310027

Based on the kinetics equation proposed by T. Kagiya, the kinetic study on the polymerization of methyl methacrylate(MMA) by Y(acac)_3/n-BuMgCl was carried out with a dilatometer. It was found that the rate of propagation is the first order with respect to the concentration of both active center and monomer. Thus, the equation of propagation rate can be described as R_p=K_p[c][M]. In addition, the instantaneous chain initiation and single molecular termination were concluded for the present system. The activation energy is close to 32.kJ/mol. In the polymerization, n-BuMgCl acts not only as the cocatalyst, but also as chain transfer agent with c_I=3. 6 × 10^(-4).

关键词： Polymerization Kinetics Mechanism Methyl methacrylate Rare earth catalyst

SYNTHESIS OF NOVEL THIOPHENEDIMETHYLENE BRIDGED HOMOBINUCLEAR METALLOCENES AND THEIR CATALYTIC PROPERTIES FOR ETHYLENE POLYMERIZATION

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Chinese Journal of Polymer Science 2006年第1期24卷 21-27页

作者： Xi-jie Liu Jun-quan Sun Hai-ying Zhang Xiao-hui Xiao and Feng Lin Department of chemical Engineering,college of Material and chemical Engineering,Zhejiang univer.ity,Hangzhou 31002.,china Department of chemical Engineering College of Material and Chemical Engineering Zhejiang University Hangzhou 310027

By treating disodium（thiophenedimethylene）dicyclopentadienide C4H2.（CH2.5H4Na）2.with two equivalent of CpTiCl3 or CpZrC13 DME at 0℃ in THF, two new thiophenedimethylene bridged binuclear metallocenes [Cl2.C5H5][C5H4CH2.4H2.CH2.5H4][C5H5MCl2. （M = Ti 3, M = Zr 4） were synthesized in high yield and their structures were characterized by ^1H-NMR. These complexes were used as catalysts for ethylene polymerization in the presence of methylaluminoxane （MAO）. The effects of polymerization temperature, time, concentration of catalyst, molar ratio of MAO/Cat on polymerization were studied in detail. The catalytic activities of thiophenedimethylene bridged binuclear metallocene catalysts （3, 4） reached 2.44 × 10^5 g PE mol^-1 cat^-1· h^-1, 9.61 × 10^5 g PE mol^-1 · cat^-1· h^-1 respectively, which are higher than that of pheneyldimethylene bridged binuclear metallocene catalysts and much higher than that of corresponding mononuclear metallocenes （Cp2.iCl2.and Cp2.rCl2.. The molecular weight distribution curves of polyethylenes produced by binuclear metallocene catalysts （3, 4） and by mononuclear metallocene catalyst have only single peak, but the former （MWD = 3.5-4.7） is obviously broader than the latter （MWD = 2.0-2.2..

关键词： Binuclear metallocene Thiophenedimethylene bridged Ethylene polymerization.