Model Filled Polymers .11. Synthesis of Uniformly Crosslinked Polystyrene Microbeads
Abstract
Monodisperse sized crosslinked polystyrene (PS) beads by reaction of styrene (S) and divinylbenzene (DVB), in batch emulsion copolymerization in the absence of emulsifiers, are not uniformly crosslinked, because DVB is more reactive than S. For copolymerization of 1 to 10 mole % DVB and S, within each crosslinked PS microbead, 7 crosslink density varies by a factor exceeding two and decreases with uniformity crosslinked PS beads. For both copolymerization techniques, T8 correlates well with crosslink density and PS beads are spherical and monodisperse in size.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 10, 1991
- Accession Number
- ADA237472
Entities
People
- Dennis Kriz
- J. J. Aklonis
- R. Salovey
- Shenmin Ma
- Zheng-you Ding
Organizations
- University of Southern California