In:
Journal of Nanoscience and Nanotechnology, American Scientific Publishers, Vol. 20, No. 8 ( 2020-08-01), p. 5162-5174
Abstract:
This study aimed to develop emulsification assisted with ultrasonic atomization (EUA) to make embolic biodegradable poly(caprolactone) (PCL) spherical-microcarriers with uniform particle size for mass production which was used to cure hepatocellular carcinoma, because this kind of embolic
drugs is expensive at the current market due to their complex manufacturing process. The embolic spherical-microcarriers with sustained-releasing th erapeutic agents can shrink an unresectable tumor into a respectable size. Through high frequency vibrating surface on the ultrasonic atomizer
nozzle, the thin liquid film for PCL oil-phase solution was broken into the uniform PCL microdroplets (particle sizes are from 20 to 55 μ m) with less medicine loss. To determine the optimal parameters to make PCL microcarriers, the ultrasonic module parameters including the concentration
of PCL solution, vibrating amplitude of atomizer, feeding rate of PCL oil-phase solution and collection distance on the particle size of microdroplets were analyzed. Besides, a vertical circulation flow field of aqueous-phase poly(vinyl alcohol) (PVA) solution was created to enhance the separation of the microdroplets and increase the production of the PCL microcarriers, and about 8~11 wt% of PVA solution with high stable dispersion property was used to effectively improve the yield rate of PCL spherical-microcarriers (89.8~98.2 wt%). The final particle size of PCL microcarriers was
ca. 5–18 μ m, indicating an about 25–50% volume shrinkage from microdroplets to solid spherical-microcarriers.
Type of Medium:
Online Resource
ISSN:
1533-4880
DOI:
10.1166/jnn.2020.18533
Language:
English
Publisher:
American Scientific Publishers
Publication Date:
2020
SSG:
11
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