A nanoscale TiO2-encapsulated C.I. pigment blue 15:3 was prepared through sol-gel method. The effects of encapsulation conditions on particle size were investigated in detail. Transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), contact angle analysis (CAA) and zeta potentials of TiO2-encapsulated C.I. pigment blue 15:3 at different pH value proved that encapsulation layer of TiO2 was formed on C.I. pigment blue 15:3 surface. The dispersion with small particle size was obtained when the mass ratio of octadecyl amine polyoxyethylene ether amine 2-quaternary ammonium salt (OPA) to pigment was 25%, the mass ratio of butyl titanate (BT) to pigment was lower than 11%, the dropping rate of BT was 3 mL/min and the pH value was 5.8. The encapsulated phthalocyanine blue pigment had enhanced stabilities to centrifugal force and freeze-thaw treatment.
Shaohai Fu, Changsen Du, Chuanxia Wang, Anli Tian, Chaoxia Wang, "Preparation of Nanoscale TiO2-eencapsulated C.I. Pigment Blue 15:3 via Sol-Gel Method" in Proc. IS&T Int'l Conf. on Digital Printing Technologies and Digital Fabrication (NIP30), 2014, pp 216 - 219, https://doi.org/10.2352/ISSN.2169-4451.2014.30.1.art00054_1