Synthesis of a PEG-PNIPAm thermosensitive dendritic copolymer and investigation of its self-association |
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| Authors: | Farzad Seidi Parvin Heshmati |
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| Institution: | 1. Department of Chemistry, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran;2. University of Kurdistan, Department of Chemistry, Sanandaj, Iran |
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| Abstract: | A Novel thermosensitive dendritic copolymer based on polyethylene glycol(PEG) and poly(Nisopropylacrylamide)(PNIPAm) with a cloud point(CP) around 36 ?C was successfully synthesized by preparation of a dendritic polyol and followed by atom transfer radical polymerization(ATRP) of N-isopropylacrylamide. The dendritic copolymer was characterized using gel-permeation chromatography(GPC), FTIR and 1H-NMR spectroscopy. The selfassociation behavior of the copolymer in aqueous medium was investigated by dynamic light scattering(DLS) and transmission electron microscopy(TEM). These investigations confirmed that the dendritic copolymer showed different association behaviors at various temperatures. |
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| Keywords: | Thermosensitive Dendritic Atom transfer radical polymerization Poly(N-isopropylacrylamide) Polyethylene glycol |
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