Journal Title
Title of Journal: Monatsh Chem
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Abbravation: Monatshefte für Chemie - Chemical Monthly
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Publisher
Springer-Verlag
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Authors: Harald Wutzel Wolfgang M Samhaber
Publish Date: 2007/02/19
Volume: 138, Issue: 4, Pages: 357-
Abstract
Suspensions of polymer nanoparticles in water latices with average particle diameters between 20 and 80 nm were synthesized by batch emulsion polymerization of styrene using sodium dodecyl sulphate SDS as surfactant and potassium persulphate KPS as initiator The influence of surfactant concentration initiator concentration monomer concentration and reaction temperature on the final average particle diameters and size distributions of the latices were studied The number of particles generated was proportional to the 056 power of the emulsifier concentration and to the 037 power of the initiator concentration in the whole concentration range which was observed Furthermore the final number of particles was dependant on the reaction temperature to the 206 power With these correlations the average particle number as well as the average particle size could be estimated and the results were in good agreement ±6 with the experimental values A reduction of the monomer/water ratio from 15 to 120 yielded smaller particle diameters while leaving the particle number unaffected The lower particle size limits for monomer ratios of 110 and 115 were estimated with diameters of about 18 and 16 nm
Keywords:
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