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【求助】求助急,帮忙查几篇英文文献!谢谢!

  • 云中漫步
    2007/09/17
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  • 请高手帮忙查几篇英文文献!题目如下!

    1.Flocculation Mechanism: Charge Neutralization and Bridging
    2.Flocculation Mechanism Induced by Cationic Polymers Investigated by Light Scattering
    3.On the mechanism of flocculation of suspensions by polyacrylamide
    4.Synthesis of cationic flocculants by the inverse microemulsion copolymerization of acrylamide with 60% 2-acryloxyethyltrimethyl ammonium chloride in the monomer feed. I. Initiation by ammonium persulfate/sodium disulfite redox system
    5.Preparation of a flocculant based on polyamides
    6.Synthesis of complex polymeric flocculant and its application in purifying water
    7.Principles of action of polymeric flocculants
    8.Flocculation mechanism induced by phenolic resin/PEO and floc properties
    9.Mechanism and Strength of Polymer Bridging Flocculation

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  • hjatfirst

    第1楼2007/09/17

    兄弟,你这样球文献,给别人造成较大的难度!像杂志名称、年、卷、期、起始页等信息应该是最基本的要求啊!

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  • hjatfirst

    第2楼2007/09/17

    第一篇基本信息!

    Flocculation Mechanism: Charge Neutralization and Bridging
    Herman E. Ries Jr. 1 and Bernard L. Meyers 1

    Science 28 June 1968:
    Vol. 160. no. 3835, pp. 1449 - 1450
    DOI: 10.1126/science.160.3835.1449
    Abstract:
    Electrophoresis measurements and electron-microscope observations with two model colloids and a polymeric flocculant show zeta-potential changes and details of floc structure. Fibers of the flocculant extend radially from the particle surface and vary in thickness from 20 to 300 angstroms. Both charge neutralization and bridging may function simultaneously.

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  • hjatfirst

    第3楼2007/09/17

    第二篇
    Flocculation Mechanism Induced by Cationic Polymers Investigated by Light Scattering
    Ying Zhou and George V. Franks*
    Langmuir, 22 (16), 6775 -6786, 2006. 10.1021/la060281+
    全文见附件


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  • hjatfirst

    第4楼2007/09/17

    第三篇基本信息On the mechanism of flocculation of suspensions by polyacrylamide
    期刊 Journal of Mining Science
    出版社 Springer New York
    ISSN 1062-7391 (Print) 1573-8736 (Online)
    期 Volume 3, Number 3 / 1967年5月

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  • hjatfirst

    第5楼2007/09/17

    第四篇
    Synthesis of cationic flocculants by the inverse microemulsion copolymerization of acrylamide with 60% 2-acryloxyethyltrimethyl ammonium chloride in the monomer feed. II. Influence of the formulation composition, hydrophilic-lipophilic balance, starting polymerization temperature, and reaction time
    J. R. Ochoa 1 *, F. J. Escudero Sanz 1, P. M. Sasia 2, A. Santos García 3, E. Díaz de Apodaca 1, P. Río 1
    Journal of Applied Polymer Science
    2006, Volume 103, Issue 1 , Pages 186 - 197
    4

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  • hjatfirst

    第6楼2007/09/17

    第五篇基本信息
    Preparation of a flocculant based on polyamides
    V. Mircheva, I. Mladenov, V. Konsulov, D. Sodeva
    High Chemico-Technological Institute, Sofia 1156, Bulgaria

    Journal of Applied Polymer Science

    1979,Volume 24, Issue 5 , Pages 1165 - 1168
    Abstract
    A flocculant based on waste oligomers from the polycaprolactam production was synthesized by alkaline reduction with Ni/Al alloy. Both the reduced oligoamide and the sodium aluminate are precipitated by methanol. An oligomer, absorbed by a mineral carrier, is isolated as final product. The modified oligoamide was characterized by elemental analysis, IR spectra, and was shown to contain hydroxyl groups. The prepared flocculant may be used for the clarification of natural dilute (1%) clay suspensions and wastewaters. It accelerates the precipitation 35 times, giving a compact precipitate, which favors the decanting of the clarified liquid. The optimal concentration of the flocculant is 1.8 g/liter (corresponding to 0.06 g/liter oligomer).

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  • hjatfirst

    第7楼2007/09/17

    第六篇
    Synthesis of complex polymeric flocculant and its application in purifying water
    Yinfeng Liu *, Shuzhi Wang, Jiadong Hua
    Department of Polymer Materials, Shanghai University, Shanghai 201800, China
    Abstract
    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


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  • hjatfirst

    第8楼2007/09/17

    第七篇基本信息
    Principles of action of polymeric flocculants
    J. A. Kitchener
    British Polymer Journal

    1972,Volume 4, Issue 3 , Pages 217 - 229

    Abstract
    The relationship of flocculation by water-soluble polymers to the classical phenomena of colloid chemistry is pointed out and the contributions of electrostatic and non-electrostatic forces are discussed.
    Modern flocculants have a high degree of polymerization (e.g. c. 50 000) and an extremely extended configuration when dissolved in a favourable solvent; this factor explains qualitatively some of the peculiarities of flocculation by polymers and indicates the need for rational control of their use if optimum results are to be achieved. It is concluded, however, that a quantitative theory of specific flocculant systems is not possible at present.
    Future developments in flocculation technology will almost certainly include introduction of cheaper or more selective flocculants, improved control through the use of auxiliary reagents and more sophisticated consideration of the surface chemistry of materials that have to be flocculated.

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  • hjatfirst

    第9楼2007/09/17

    第八篇
    Materials, Interfaces, and Electrochemical Phenomena
    Flocculation mechanism induced by phenolic resin/PEO and floc properties
    C. Negro *, E. Fuente, A. Blanco, J. Tijero
    Dept. of Chemical Engineering, Complutense University, Madrid, 28040, Spain

    email: C. Negro (cnegro@quim.ucm.es)

    *Correspondence to C. Negro, Dept. of Chemical Engineering, Complutense University, Madrid, 28040, Spain

    Keywords
    flocculation ?flocculation mechanisms ?flocculation kinetic ?floc properties ?polyethylene oxide


    Abstract
    The flocculation of an industrial furnish of TCF Kraft bleached pulp and ground calcium carbonate, induced by polyethylene oxide, and by the dual system formed by polyethylene oxide (PEO) and formaldehyde-phenol resin (PFR), was investigated and compared in order to study the flocculation kinetics, the flocculation mechanism and the properties of the formed flocs. A technique based on the measurement of the particle chord size distribution, called focused beam reflectance measurement, was used to carry out the research. The ability of the polyacrylate contained in the commercial ground calcium carbonate as a PEO cofactor was observed. Results confirmed the formation and the coacervation of the complex PFR-PEO, which loses its flocculant properties over time, confirming the complex bridging flocculation model. The shearing forces effect on the flocculation kinetics and on the properties of the formed flocs was also studied. © 2005 American Institute of Chemical Engineers AIChE J, 51: 1022-1031, 2005



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  • hjatfirst

    第10楼2007/09/17

    第九篇
    Title:
    Mechanism and Strength of Polymer Bridging Flocculation
    Authors:
    Swenson, J.; Smalley, M. V.; Hatharasinghe, H. L. M.
    Affiliation:
    Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
    Publication:
    Physical Review Letters, Volume 81, Issue 26, December 28, 1998, pp.5840-5843 (PhRvL Homepage)
    Publication Date:
    12/1998
    Origin:
    AIP; APS
    Abstract Copyright:
    (c) 1998: The American Physical Society
    DOI:
    10.1103/PhysRevLett.81.5840
    Bibliographic Code:
    1998PhRvL..81.5840S

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