| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 602721 | Colloids and Surfaces B: Biointerfaces | 2007 | 6 Pages |
Abstract
An amphiphilic dendrimer (DPEA-PEG) grafting polyethylene glycol at the terminals was prepared by endcapping of dendritic poly(ether-amide) (DPEA) with isocyanate terminated linear polyethylene glycol (PEG-NCO). The molecular structure was verified by gel permeation chromatography (GPC), 1H NMR and FT-IR. The micelle characteristic of DPEA-PEG in water was investigated. The critical micelle concentration (CMC) was determined by a fluorescence technique to be 55.5 mg/L. The hydrodynamic radius of micelles was measured by dynamic light scattering (DLS) to be 76.2 nm. The UV–vis spectrum showed that the solubility of salicylic acid increased from 1.91 to 2.78 mg/L when the concentration of DPEA-PEG attained 5 mg/mL in an aqueous solution.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Zhu Yang, Wenquan Zhang, Jianhua Liu, Wenfang Shi,