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Effects of Biodegradable Triblock Copolymers on the Microencapsulation of Ascorbic Acid‐2‐Glucoside in W 1 /O/W 2 Multi‐Emulsions
Author(s) -
Cho Heui Kyoung,
Cho Jin Hun,
Cheong In Woo
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750316
Subject(s) - copolymer , ascorbic acid , emulsion , materials science , polymer chemistry , chemical engineering , phase (matter) , chemistry , organic chemistry , polymer , composite material , food science , engineering
A skin‐active functional material, AA2G (ascorbic acid‐2‐glucoside, W1 phase), was encapsulated via a stepwise emulsification method using PEO‐PLGA‐PEO and PEO‐PCL‐PEO biodegradable triblock copolymers as wall materials. The emulsion stability of the W 1 /O/W 2 multi‐emulsions was observed using a ferroxyl test method and on‐line turbidity analysis for a short period of time. The morphology of the multi‐emulsions was observed using the laser confocal and optical microscopes. The use of copolymers in W 1 phase was found to be more effective. The copolymers decreased the size of the multi‐emulsions and enhanced emulsion stability.