Multiarm star polyglycerol- block-poly(HEMA) as a versatile precursor for the preparation of micellar nanocapsules with different properties

Well-defined multiarm star polymer with hyperbranched polyglycerol as core and poly(2-hydroxyethyl methacrylate) (PHEMA) as arms were used as precursor for the preparation of inverted and aqueous micellar nanocapsules. The partial modification of the hydroxyl groups of PHEMA arms with aliphatic chai...

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Bibliographic Details
Published in:Reactive & functional polymers 2007-02, Vol.67 (2), p.156-164
Main Authors: Liu, Huaji, Chen, Yu, Shen, Zhong, Frey, Holger
Format: Article
Language:English
Subjects:
Applied sciences
Chemical modifications
Chemical reactions and properties
Encapsulation
Exact sciences and technology
Hyperbranched
Nanocapsule
Organic polymers
Physicochemistry of polymers
Poly(2-hydroxyethyl methacrylate)
Star polymer
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Summary:Well-defined multiarm star polymer with hyperbranched polyglycerol as core and poly(2-hydroxyethyl methacrylate) (PHEMA) as arms were used as precursor for the preparation of inverted and aqueous micellar nanocapsules. The partial modification of the hydroxyl groups of PHEMA arms with aliphatic chains led to the formation of inverted micellar nanocapsules. The hydrophilic dye encapsulation capacity of the inverted micelles can be enhanced significantly by transforming the inner hydroxyl groups of PHEMA arms into quaternized amine groups. The modification of the outer and inner hydroxyl groups of PHEMA arms with polyethylene glycol acid chloride and pivaloyl chloride, respectively, resulted in aqueous micellar nanocapsule.
ISSN:1381-5148
DOI:10.1016/j.reactfunctpolym.2006.10.011