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  • 1
    Digitale Medien
    Digitale Medien
    Effect of polymer composition on the production of cationic multihollow polymer particles by the stepwise acid/alkali method (1999)
    Springer
    Colloid & polymer science 277 (1999), S. 589-594 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Key words Hollow ; Particle ; Emulsion polymerization ; Morphology ; Swelling
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract The effect of the polymer composition on the formation of multihollow structures formed within submicron-sized styrene–butyl acrylate–dimethylaminoethyl methacrylate terpolymer particles by the “acid/alkali method” proposed by the authors was examined. The cationic particles were produced by seeded emulsion terpolymerization with 2,2′-azobis(2-amidinopropane) hydrochloride initiator. The dimethylaminoethyl methacrylate content and the glass-transition temperature of the terpolymer greatly affected the formation of the multihollow structure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003960050430
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Production of submicron-sized multihollow polymer particles having high transition temperatures by the stepwise alkali/acid method (1996)
    Springer
    Colloid & polymer science 274 (1996), S. 428-432 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Multihollow particles ; emulsion polymerization ; morphology ; carboxyl group ; transition temperature
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract Submicron-sized multihollow styrene-methacrylic acid (92.6/7.4, molar ratio) copolymer particles having high transition temperature above 100°C were produced by using the stepwise alkali/acid method proposed by the authors. The original particles were prepared by emulsion copolymerization of styrene and methacrylic acid. The effects of pH, temperature and time in the alkali treatment process as the first step on the multihollow structure were clarified under the same acid treatment conditions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00652464
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Production of submicron-sized multihollow polymer particles by alkali/cooling method (1996)
    Springer
    Colloid & polymer science 274 (1996), S. 801-804 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Multihollow particles ; emulsion polymerization ; morphology ; carboxyl group ; alkali swelling
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract Submicron-sized styrene-methacrylic acid copolymer particles, which were produced by emulsion copolymerization, were changed to those having multihollow structure by treating stepwise the emulsion as follows. First alkali treatment was carried out at higher temperature than the glass transition temperature and subsequently the emulsion was cooled by keeping it at room temperature. This was named “alkali/cooling method”. The effects of methacrylic acid content, pH, time and temperature in the alkali treatment on the formation of multihollow structure were clarified.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00654677
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Effect of nonionic emulsifier on the production of multihollow polymer particles by the stepwise acid/alkali method (2000)
    Springer
    Colloid & polymer science 278 (2000), S. 358-363 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Key words Hollow ; Particle ; Emulsion polymerization ; Morphology ; Swelling
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract The effects of nonionic emulsifier on the formation of multihollow structures formed within sub-micron-sized polymer particles by the “acid/alkali method” proposed by the authors were examined. The original acid-swellable particles were produced by seeded emulsion terpolymerization of styrene, butyl acrylate, and dimethylaminoethyl methacrylate. The results indicate that the nonionic emulsifier had a great effect on the formation of multihollow particles.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003960050525
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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