Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1512549 | Energy Procedia | 2013 | 8 Pages |
Abstract
Poly(l-lactic acid) (PLLA) microencapsulated vitamin E was prepared in oil in water (O/W) emulsion system using solvent evaporation technique. The influence of PLLA:vitamin E weight ratio on the encapsulation was studied. In the case of low molecular weight PLLA, the optimum ratio is 25:1. It was found that using smaller amount of PLLA, microcapsule could not formed. In contrast, vitamin E was well enveloped with lower amount of high molecular weight PLLA, PLLA:vitamin E at 3:1. The obtained capsule was observed with an optical and scanning electron microscopes. The amount of the encapsulated vitamin E was measured with gel permeation chromatograph.
Related Topics
Physical Sciences and Engineering
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Energy (General)
Authors
Preeyaporn Chaiyasat, Amorn Chaiyasat, Paweena Teeka, Sayrung Noppalit, Usaporn Srinorachun,