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.
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Wang, W., Zhang, Q., Guo, F. et al. Preparation of diblock copolymer PBA-b-PSt by DPE method in emulsion. J Polym Res 18, 1229–1235 (2011). https://doi.org/10.1007/s10965-010-9541-y
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DOI: https://doi.org/10.1007/s10965-010-9541-y