Back to Search
Start Over
Formation of zinc sulfide and hydroxylapatite nanoparticles in polyelectrolyte-modified microemulsions.
- Source :
- Colloid & Polymer Science; Dec2007, Vol. 285 Issue 15, p1719-1726, 8p
- Publication Year :
- 2007
-
Abstract
- Abstract  The paper is focused on the formation of nanoparticles, i.e., zinc sulfide (ZnS) and hydroxylapatite, in a microemulsion template phase consisting of heptanol, water, and a surfactant with a sulfobetaine head group in the absence and presence of an added polyelectrolyte. In the absence of a polyelectrolyte, beside larger particles, spherical ZnS nanoparticles with a diameter below 10 nm can be redispersed after solvent evaporation. In the presence of the synthetic cationic polyelectrolyte poly(diallyldimethylammonium chloride), a reloading of the particle surface is observed, and cationic charged ZnS nanoparticles, of about 5 nm in size, can be redispersed as a main fraction. When hydroxylapatite is formed in the presence of the more stiff biopolymer chitosan hydroxylapatite, hybrid structures were formed. Transmission electron micrographs show fiber-like aggregate structures, consisting of individual small nanoparticles ordered along the polymer chain. [ABSTRACT FROM AUTHOR]
- Subjects :
- ZINC sulfide
HYDROXYAPATITE
NANOPARTICLES
EMULSIONS
Subjects
Details
- Language :
- English
- ISSN :
- 0303402X
- Volume :
- 285
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- Colloid & Polymer Science
- Publication Type :
- Academic Journal
- Accession number :
- 27686031
- Full Text :
- https://doi.org/10.1007/s00396-007-1757-y