Stabilization of emulsion polymerization by block and graft copolymers with polysiloxane and poly[(acetylimino)ethylene] sequences
✍ Scribed by Simionescu, Cristofor I. ;David, Geta ;Alupei, Valentina ;Rusa, Mariana ;Ioanid, Aurelia ;Simionescu, Bogdan C.
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 61 KB
- Volume
- 255
- Category
- Article
- ISSN
- 0003-3146
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✦ Synopsis
Amphiphilic block and graft copolymers with polysiloxane and poly[(acetylimino)ethylene] sequences were used as nonionic surfactants in the emulsion polymerization of some vinyl monomers (styrene, methyl methacrylate, butyl methacrylate). The peculiarities of the systems (polymerization kinetics and emulsion characteristics) were related to the structural features of the studied emulsifiers and suggested their ability to participate in initiation and transfer reactions and respectively clouding phenomena in aqueous phase.
ZUSAMMENFASSUNG: Block-und Pfropfcopolymere mit Polysiloxan-und Poly(acetyliminoethylen)-Bestandteilen wurden als nichtionische Emulgatoren bei der Emulsionspolymerisation von einigen Vinylmonomeren (Styrol, Methylmethacrylat, Butylmethacrylat) benutzt. Die Polymerisationssysteme (kinetische Aussagen, Teilchengro ¨ße, Teilchengro ¨ßenverteilungen, usw.) wurden charakterisiert und die Emulgatorstruktur-Polymerisationseigenschaft-Beziehungen wurden untersucht. Die Teilnahme der Copolymeren an der Initiierungs-und U ¨bertragungsreaktion wurde festgestellt.
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