Journal
POLYMER
Volume 47, Issue 16, Pages 5744-5753Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2006.06.005
Keywords
nitroxide-mediated radical polymerization (NMRP); 2-(dimethylamino)ethyl acrylate (DMAEA); microspheres
Categories
Ask authors/readers for more resources
2-(Dimethylamino)ethyl acrylate (DMAEA) was grafted from the surface of alkoxyamine-functionalized crosslinked poly(styrene-co-chloromethylstyrene) microspheres by nitroxide-mediated radical polymerization (NMRP). Latex particles (similar to 60 nm diameter) bearing chloromethyl groups were synthesized by emulsion polymerization. N-tert-butyl-N-(1-diethyl phosphono-2,2-dimethylpropyl)nitroxide (SG1) was then immobilized on the particle surface. Microspheres grafted with the homopolymer pDMAEA, as well as block copolymers poly(styrene-b-DMAEA) and poly(butyl acrylate-b-DMAEA) were prepared by surface-initiated NMRP in N,N-dimethylfonnamide at 112 degrees C, with the addition of free SG1 to ensure that control is maintained. Particle size increases with number average molecular weight (M-n) of untethered polymers. The polymerizations exhibit linear first order kinetic plots and slight curvature of evolution of M-n with conversion. The functional microspheres were analyzed by infrared spectroscopy, transmission electron microscopy and thermal analysis, as well as their dispersibility in water; the results support the formation of surface-grafted pDMAEA on the microspheres. (c) 2006 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available