ZHAO Xiao, LIU Jiawei, DAI Hongjun, et al. Preparation of composite nano-colorants using mini-emulsion/solvent evaporation technique[J]. CIESC Journal, 2014, (3): 1118-1125.
ZHAO Xiao, LIU Jiawei, DAI Hongjun, et al. Preparation of composite nano-colorants using mini-emulsion/solvent evaporation technique[J]. CIESC Journal, 2014, (3): 1118-1125.DOI: 10.3969/j.issn.0438-1157.2014.03.049.
the combined mini-emulsion and solvent evaporation (MESE) method was used to prepare solvent dyes/poly (methyl methacrylate) (PMMA) composite nano-colorants. Using dynamic light scattering tests
the effects of the formulation variables
including concentration of surfactant and polymer
dye loading and ultrasonication time
on the size and size distribution of the prepared nanoparticles were examined. Transmission electron microscopy (TEM)
XPS and elemental analysis results indicated distinct core-shell structure of SOB/PMMA and SOY/PMMA composite colorant latexes
which proved that dyes were successfully encapsulated in the PMMA matrix using the MESE method. The dynamic migration of encapsulated solvent dyes in water and oil phase was analyzed by UV-visible spectrophotometry
which confirmed the encapsulation of the hydrophobic dyes in PMMA matrix. The resulting composite colorant could be dispersed in water. It also exhibited high light fastness