Polymer microspheres were synthesized by dispersion copolymerization of divinylbenzene (DVB) with vinylbenzyl-terminated poly (t-butyl methacrylate) (PBMA) macromonomers in nonaqueous media (methanol and acetonitrile). The particle diameter increased gradually with an increase of the DVB concentrati
Polymer microspheres with surface chains prepared by dispersion copolymerization using poly(oxyethylene) macromonomer
β Scribed by P. H. Wang; Cai-Yuan Pan
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 271 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0021-8995
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β¦ Synopsis
Abstract
Polymer microspheres were prepared by dispersion copolymerization of styrene with poly(oxyethylene) (peo) macromonomer. A dispersion terpolymerization of styrene, PEO macromonomer and acrylic acid was also conducted to prepare polymer microspheres with both surface carboxyl groups and PEO polymer chains. The microspheres thus obtained were characterized with TEM, IR, and Xβray photoelectron spectroscopy analyses. Palladium nanoparticles were then formed on the surface of these copolymer microspheres forming polymer/metal nanocomposites which were then studied by TEM and Xβray diffraction. Β© 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2732β2736, 2002
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## Abstract The pH effect on microsphere formation in the dispersion copolymerization of methyl methacrylate with vinylbenzylβterminated poly(acrylic acid) (PAA) macromonomers is studied. The diameter of poly(methyl methacrylate) (PMMA) microspheres is minimum around pH = 8. Dynamic light scatterin
The polymer microspheres were synthesized by dispersion copolymerization of divinylbenzene (DVB) with two vinylbenzyl-terminated poly(ethylene glycol methylether) (PEG)/poly(t-butyl methacrylate) (PBMA) macromonomer blends in methanol. In these systems of two macromonomer blends as the emulsifier, t