Abstract
Multiarm PEO star polymers with a purely aliphatic polyether structure have been synthesized using hyperbranched polyglycerol (PG) with different molecular weights as a multifunctional initiator. Different degrees of deprotonation of the initiator were studied with respect to molecular weight control. The results show that the degree of deprotonation is a crucial parameter for the synthesis of well-defined polymers with controlled molecular weights. Partial deprotonation of the PG hydroxyl groups (5-8%) was proven to represent an optimum for the synthesis of star polymers with molecular masses close to the theoretical values. Molecular weights of the stars ranged between 9 000 and 30 000 g • moi-1. MALDI-ToF spectra confirmed that the PEO arms in the star polymers possess homogeneous lengths. Biocompatible Multiarm Starpolymers. Chemical equation presented.
| Original language | English |
|---|---|
| Pages (from-to) | 35-44 |
| Number of pages | 10 |
| Journal | Macromolecular chemistry and physics |
| Volume | 211 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 5 Jan 2010 |
| Externally published | Yes |
Keywords
- Dendrimers
- Hyperbranched
- Matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS)
- Poly(ethylene oxide)
- Star polymers
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