PREPARATION OF THERMOSENSITIVE MAGNETIC PARTICLES BY DISPERSION POLYMERIZATION

Authors
DING XB SUN ZH WAN GX JIANG YY
Citation
Xb. Ding et al., PREPARATION OF THERMOSENSITIVE MAGNETIC PARTICLES BY DISPERSION POLYMERIZATION, Reactive & functional polymers, 38(1), 1998, pp. 11-15
Citations number
5
Categorie Soggetti
Polymer Sciences","Engineering, Chemical","Chemistry Applied
Journal title
Reactive & functional polymers → ACNP
ISSN journal
13815148
Volume
38
Issue
1
Year of publication
1998
Pages
11 - 15
Database
ISI
SICI code
1381-5148(1998)38:1<11:POTMPB>2.0.ZU;2-Z
Abstract
A new kind of thermosensitive magnetic particles with core/shell struc ture was prepared by copolymerization of styrene (St) and N-isopropyla crylamide (NIPAM) in the presence of Fe3O4 magnetic fluid in ethanol/w ater medium. The particles shrank above the lower critical solution te mperature (LCST) of Fe3O4/P(St-NIPAM) and swelled below the LCST in wa ter. The effect of polymerization parameters such as initiator concent ration and NIPAM/St ratio on particles was investigated. Higher initia tor concentration formed larger Fe3O4/P(St-NIPAM) particles, and the p articles size decreased as the NIPAM/St ratio increased. (C) 1998 Else vier Science B.V. All rights reserved.