Synthesis of IBOMA-MPEGA-DMAM copolymer and its dispersion in phthalocyanine blue aqueous colorant

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Abstract The terpolymer of P(IBOMA-MPEGA-DMAM) was obtained by solution free polymerization through free solution polymerization of isobornyl methacrylate (IBOMA), polyethylene glycol monomethyl ether acrylate (MPEGA) and,N, N-dimethacrylamide (DMAM), with azobisisobutyronitrile (AIBN) as initiator, and the terpolymer was applied to the aqueous phthalocyanine blue dispersion system. Taking the color paste viscosity as a main measurement index, the effects of the dosage of initiator, reaction temperature and reaction time on the dispersibility were optimized by central composite method. FT-IR and ¹H NMRGPC were used to characterize the chemical structure and molecular weight of polymers of the polymer. The particle size, microstructure, centrifugal and freeze-thaw stability of the aqueous phthalocyanine blue slurry were analyzed, and the influence of the dispersant on the dispersion of phthalocyanine blue was investigated. The results show that when the dosage amount of initiator is 2.12%, the reaction temperature is 81 ℃, the reaction time is 5.3 h, the dispersion performance is good, and when the amount of dispersant is 3.6%, the viscosity of the slurry is 6.2 mPa·s and the average particle size is 205 nm. Compared with commercial dispersants without added dispersants, the phthalocyanine blue slurry prepared by P(IBOMA-MPEGA-DMAM) has better dispersion stability.

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	Articles by authors
	JIANG Shuangshuang
	YIN Xiaogang
	MAO Lianshan

Keywords： hyperdispersant synthesis central composite design dispersion stability phthalocyanine blue

Received 2022-12-22;

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JIANG Shuangshuang, YIN Xiaogang, MAO Lianshan.Synthesis of IBOMA-MPEGA-DMAM copolymer and its dispersion in phthalocyanine blue aqueous colorant[J] Chemcial Industry and Engineering, 2024,V41(3): 18-25

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