Ceramic encapsulation with polymer via co-axial electrohydrodynamic jetting.

Abstract:

:Co-flowing media of a polymeric solution (30 wt% polymethylsilsesquioxane in ethanol) and a ceramic suspension (10 wt% alumina in glycerol) were subjected to an electric field. The flow rates of the media (10-30 microL min(-1)) and the applied voltage (0-11 kV) were varied systematically during the experimentation by making gradual increments to each variable, which enabled the construction of a mode selection map. Under co-flowing conditions, with the flow rate of polymer solution (outer needle) twice that of the ceramic suspension (inner needle), encapsulated droplets of polymer-coated alumina were produced within stable cone-jet mode. These were collected in a thin film of water and the resultant particle size varied between 1 and 38 microm. Encapsulation was confirmed with scanning electron microscopy and element analysis.

journal_name

J Microencapsul

authors

Nangrejo M,Ahmad Z,Edirisinghe M

doi

10.3109/02652048.2010.489973

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

542-51

issue

6

eissn

0265-2048

issn

1464-5246

journal_volume

27

pub_type

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