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Preparation of pH‐Responsive Hydrophilic Core‐Shell Particles for Encapsulation of Water‐Soluble Material
Author(s) -
Park YoungHo,
Han JooHyun,
Suh KyungDo
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700586
Subject(s) - cationic polymerization , methylene blue , core (optical fiber) , chemical engineering , chemistry , polymer chemistry , ionic strength , ionic bonding , shell (structure) , materials science , aqueous solution , organic chemistry , composite material , ion , catalysis , photocatalysis , engineering
Dual pH‐responsive PAAc/ PVAm core‐shell particles to encapsulate water‐soluble material were prepared through the deposition of PVAm on the surface of PAAc core particles. The structural characteristics of the core‐shell particles were confirmed by SEM and CLSM. To investigate the release profiles of the core‐shell particles and PAAc core, methylene blue, which is a cationic water‐soluble dye, was introduced. Release profiles were dominantly affected by the core swelling behavior at different pH values. The release rate of the core‐shell was less than the PAAc core, indicating that it is affected by ionic interactions between the particle and the cationic dye.