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Factors influencing aggregation behavior of poly(γ-benzyll-glutamate)-graft-poly(ethylene glycol) copolymer in mixed solvents

✍ Scribed by Guo-Quan Zhu; Fa-Gang Wang; Yu-Ying Liu; Qiao-Chun Gao

Book ID
111491381
Publisher
Versita
Year
2010
Tongue
English
Weight
324 KB
Volume
64
Category
Article
ISSN
0366-6352

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✦ Synopsis

Abstract

Poly(γ-benzyl l-glutamate)-graft-poly(ethylene glycol) (PBLG-graft-PEG) copolymer was synthesized by the ester exchange reaction of PBLG homopolymer with mPEG. Aggregation behavior of the PBLG-graft-PEG copolymer in mixtures of ethanol and chloroform was investigated by transmission electron microscopy (TEM), dynamic light scattering (DLS), and viscometry. Effects of the polymer solution concentration, grafting degree, test temperature, and chloroform content on the morphology, average particle diameter, and critical micelle concentration (CMC) of the micelles formed by the PBLG-graft-PEG copolymer in the mixed solvents were mainly studied. It was revealed that the PBLG-graft-PEG copolymer can self-assemble into polymeric micelles with a core-shell structure in various shapes depending on the preparation conditions.

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