Well-defined star shaped and linear block copolymers were synthesized to study the dispersion stability of copper phthalocyanine (CuPc). Poly (2-dimethylamino) ethyl methacrylate (PDMAEMA) and poly(poly(ethylene glycol) methyl ether methacrylate) (PPEGMA) were synthesized by activators generated by electorn transfer (AGET) atom transfer radical polymerization (ATRP). pDMAEMA-b-pPEGMA copolymers were characterized by GPC and NMR. Furthermore, we study the effect of the dispersion stability of copper phthalocyanine by controlling degree of polymerization of PEGMA as a stabilizing group. 4-arm star shaped polymeric dispersant showed better dispersion stability of CuPc at 25 oC for 7 days.Figure 1. TEM images from pigment dispersed:(a) with linear dispersant  (b) with star shaped dispersant after 7 days

4-Arm star shaped and linear block copolymers for copper phthalocyanine dispersion

248th National Meeting (2014)

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