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  • Anomalousparticle  (2)
  • Springer  (2)
  • American Association for the Advancement of Science (AAAS)
  • American Society of Hematology
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Keywords
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  • Springer  (2)
  • American Association for the Advancement of Science (AAAS)
  • American Society of Hematology
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  • 1
    Electronic Resource
    Electronic Resource
    Production of anomalous polymer microspheres having uneven surfaces by “stepwise” heterocoagulation technique (1990)
    Springer
    Colloid & polymer science 268 (1990), S. 791-796 
    Details
    ISSN: 1435-1536
    Keywords: Anomalousparticle ; microsphere ; emulsionpolymerization ; emulsionblend ; heterocoagulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Anomalous polymer microspheres having uneven surfaces were produced by “stepwise” heterocoagulation technique of small polymer particles (SPs) onto large polymer particles (LPs).SPs andLPs have surface charges opposite to each other in the emulsion states.SPs were produced by emulsion copolymerization of styrene and methacryloyloxyethyltrimethylammonium chloride, andLPs by emulsion terpolymerization of styrene, butyl acrylate and methacrylic acid, with nonionic emulsifier being used in both cases. Maximum covering ofLP bySPs was obtained under the conditions that both emulsions were blended without the coagulation at pH 3 at room temperature and then left stand to coagulate with each other at 70 °C for 4 h at pH 9.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01410956
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of ″stepwise″ heterocoagulation process of small cationic polymer particles onto large anionic polymer particles using dynamic light scattering (1991)
    Springer
    Colloid & polymer science 269 (1991), S. 125-130 
    Details
    ISSN: 1435-1536
    Keywords: Anomalousparticle ; dynamiclight-scattering ; emulsionblend ; emulsionpolymerization ; heterocoagulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In order to clarify in detail the process of the “stepwise” heterocoagulation of small polymer particles (SP) onto large polymer particles (LP), which we proposed to prepare anomalous polymer particles, the particle-size distribution in each step was estimated using dynamic light scattering.SP andLP have surface charges opposite to each other in emulsion states.SP were produced by emulsion copolymerization of styrene and methacryloyloxyethyltrimethylammonium chloride, andLP by emulsion terpolymerization of styrene, butyl acrylate, and methacrylic acid. Both emulsions in which nonionic emulsifier had been added were blended without coagulation and then the heterocoagulation was carried out by adjusting of the pH and heating.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00660301
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    Paper (German National Licenses)
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