Abstract
Diblock copolymer poly (butyl acrylate)-b-polystyrene (PBA-b-PSt) was prepared by two steps in a complete emulsion system, using DPE (1, 1-diphenylethylene) as free radical control agent. In the first step, butyl acrylate (BA), initiator potassium peroxodisulfate (KPS) and DPE were emulsion polymerized to form P (BA-DPE) precursor. Then the precursor was heated in the presence of a second monomer styrene (St), and block copolymer was synthesized successfully. The structures, molecular weight of precursor and block copolymer were characterized by FTIR, UV-VIS, 1H-NMR and SEC/MALLS. Influence of DPE on polymerization kinetics was also investigated. Meantime, thermal properties of block copolymer were analyzed by TGA and DSC.
| Original language | English |
|---|---|
| Pages (from-to) | 1229-1235 |
| Number of pages | 7 |
| Journal | Journal of Polymer Research |
| Volume | 18 |
| Issue number | 5 |
| DOIs | |
| State | Published - Sep 2011 |
Keywords
- Controlled radical polymerization
- Diblock copolymer
- DPE
- Emulsion polymerization
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