Journal
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
Volume 83A, Issue 3, Pages 696-702Publisher
WILEY
DOI: 10.1002/jbm.a.31303
Keywords
drug delivery/release; microspheres; biodegradable
Ask authors/readers for more resources
Cholic acid functionalized star oligo/poly(DL-lactide)s with different molecular weights were synthesized through the ring-opening polymerization of DL-lactide initiated by cholic acid. On the basis of the specific physicochemical properties of the star oligo/poly(DL-lactide)s, submicron sized drub delivery systems were fabricated using a very convenient ultrasonic dispersion method, which did not involve toxic organic solvents. The drug-loaded microspheres had a regular spherical shape with a narrow size distribution. The effects of ultrasonic power and the molecular weight of polymers on the microsphere fabrication were investigated. The in vitro drug release was studied. The release profiles were fitted by the classical empirical exponential expression. The fitting result indicated that the drug release was controlled by combined degradation and diffusion mechanism. (C) 2007 Wiley Periodicals, Inc.
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