Loading...
Please wait, while we are loading the content...
Similar Documents
Association Behavior of Amphiphilic ABA Triblock Copolymer Composed of Poly(2-methoxyethyl acrylate) (A) and Poly(ethylene oxide) (B) in Aqueous Solution
| Content Provider | MDPI |
|---|---|
| Author | Mizoue, Yoko Onodera, Ema Haraguchi, Kazutoshi Yusa, Shin-Ichi |
| Copyright Year | 2022 |
| Description | Poly(2-methoxyethyl acrylate) (PMEA) and poly(ethylene oxide) (PEO) have protein-antifouling properties and blood compatibility. ABA triblock copolymers $(PMEA_{l}-PEO_{11340}-PMEA_{m}$ $(MEOM_{n}$; n is average value of l and m)) were prepared using single-electron transfer-living radical polymerization (SET-LRP) using a bifunctional PEO macroinitiator. Two types of $MEOM_{n}$ composed of PMEA blocks with degrees of polymerization (DP = n) of 85 and 777 were prepared using the same PEO macroinitiator. $MEOM_{n}$ formed flower micelles with a hydrophobic PMEA (A) core and hydrophilic PEO (B) loop shells in diluted water with a similar appearance to petals. The hydrodynamic radii of $MEOM_{85}$ and $MEOM_{777}$ were 151 and 108 nm, respectively. The PMEA block with a large DP formed a tightly packed core. The aggregation number $(N_{agg}$) of the PMEA block in a single flower micelle for $MEOM_{85}$ and $MEOM_{777}$ was 156 and 164, respectively, which were estimated using a light scattering technique. The critical micelle concentrations (CMCs) for $MEOM_{85}$ and $MEOM_{777}$ were 0.01 and 0.002 g/L, respectively, as determined by the light scattering intensity and fluorescence probe techniques. The size, $N_{agg}$, and CMC for $MEOM_{85}$ and $MEOM_{777}$ were almost the same independent of hydrophobic DP of the PMEA block. |
| Starting Page | 1678 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym14091678 |
| Journal | Polymers |
| Issue Number | 9 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-04-20 |
| Access Restriction | Open |
| Subject Keyword | Polymers Polymer Science Flower-like Micelle Triblock Copolymer Amphiphilic Copolymer Single-electron Transfer-living Radical Polymerization Poly(ethylene Oxide) |
| Content Type | Text |
| Resource Type | Article |
