Summary
A description is given of the methods used for the preparation of monodisperse polystyrene latices using hydrogen peroxide as an initiator and sodium dodecanoate, sodium dodecyl hydrogen phosphate and dodecylamine hydrochloride as surface active agents for the emulsification of styrene. The latices prepared had a small coefficient of variation on particle diameter as measured by electron microscopy. The range of particle sizes investigated was from 500–5000 Å. The diameters of the particles determined, where possible, from Higher Order Tyndall Spectra were in reasonable agreement with those determined by electron microscopy. Determination of the surface area of one latex by krypton adsorption gave a surface area in close agreement with that obtained from electron microscope observations.
Zusammenfassung
Die Methoden zur Präparation monodisperser Polystyrol-Latices werden beschrieben, wobei als Initiator Wasserstoffsuperoxid und als Emulgator Natriumdodecanoat, Natriumdodecyl-Hydrogenphosphat und Dodecylamin-Hydrochlorid Verwendung fanden. Die erhaltenen Latices haben einen kleinen Koeffizienten der Variation des Teilchen-Durchmessers, bestimmt mit Elektronenmikroskopie. Die Partikelgröße schwankte innerhalb 500–5000 Å. Die Teilchen-Durchmesser aus höheren Ordnungen des Tyndall-Spektrums stehen in vernünftigerÜbereinstimmung mit denen aus elektronenmikroskopischen Untersuchungen. Die Bestimmung der Oberflächengröße eines Latex durch Krypton-Adsorption gab eine Oberfläche ebenfalls in guter Übereinstimmung mit der elektronenmikroskopischen Beobachtung.
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Ottewill, R.H., Shaw, J.N. Studies on the preparation and characterization of monodisperse polystyrene latices. Kolloid-Z.u.Z.Polymere 215, 161–166 (1967). https://doi.org/10.1007/BF01520398
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DOI: https://doi.org/10.1007/BF01520398