Amphiphilic Zwitterionic Poly(dimethylsiloxane) (PDMS)-Contained Poly(Ether amine) (Z-SiPEA) as the Responsive Polymeric Dispersant

Abstract

We demonstrated here a novel concept of the responsive dispersant based on the amphiphilic zwitterionic poly(ether amine) (Z-SiPEAs), which can control the dispersion of dyes and pigments in water. Z-SiPEAs are composed of short poly (dimethylsiloxane) (PDMS) chain in the backbone and Jeffamine L100 as graft chain. The amino groups in the backbone and carboxyl groups grafted to the backbone make the obtained Z-SiPEAs zwitterionic. Transmission electron microscopy (TEM) and dynamic light scattering (DLS) results revealed that the obtained Z-SiPEAs can self-assemble into nanoparticles in water, which possessed sharp response to temperature, pH, and ionic strength with the tunable clouding point (CP). In the presence of Z-SiPEAs, not only hydrophobic dyes such as Nile Red can be dispersed in water, but the hydrophilic dye Rose Bengal (RB) can be dispersed in unpolar solvents. Further more, Z-SiPEAs can enhance the dispersion of inorganic pigments Titanium White, Iron Red and Chrome Yellow very efficiently in most solvents. It should be noted that the dispersion of organic dyes and inorganic pigments in water can be controlled by temperature in the presence of Z-SiPEAs. ¹H NMR and FT-IR revealed the strong coordination between carboxyl groups in Z-SiPEAs and metal atoms of inorganic pigments. These characteristics will give Z-SiPEAs potential as the novel responsive polymeric dispersant.

Influence of the hydrophilic/hydrophobic nature of polyetheramines on the interaction between amine–alcohol–silicate hybrids and anionic dyes for effective water cleaning

“…6,7 Therefore, the resulting hybrid matrix can exhibit enhanced adsorption capacity and incorporate a large number of species. [8][9][10][11] These authors developed hyperbranched poly(etheramine) (hPEA) hybrids for selective dye adsorption and separation. [8][9][10][11] These authors developed hyperbranched poly(etheramine) (hPEA) hybrids for selective dye adsorption and separation.…”

Research on the Influence of the Type of Surfactant and Concentrator in Aqueous Dispersion of Pigments

“…Table 7 shows the results of different tests. 22 H. In this case poly(vinyl alcohol) in combination with nonionic surfactants make up the disperse system with the lowest stability. On the basis of the conducted tests, it may ve said that the higher dispersion efficiency is associated with the larger pigments specific surface area and a lower amount of concentrator and surfactant.…”

“…Macro-chains of the concentrator interact with the surfactant adsorption layer and the more intensive it is, the higher its boundary viscosity number is. It was found, that C 17 H 34 EO 18 OH and C 17 H 35 NHEO 22 H with carboxylmethyl cellulose sodium salt are the surfactants with the highest stabilizing effect on aqueous dispersion of pigments.…”

“…An approximate value of the optimal amount of stabilizer can be calculated with reference to the size of the phase separation surface, thickness of the layer, and critical concentration of surfactant molecules in the system. The stabilizing influence of the surfactant involves not only decreasing the surface tension at the interface, but also forming a structural barrier within the volume which will ensure dispersion stability [ 22 , 23 ].…”

Preparation of reactive nanoscale carbon black dispersion for pad coloration of cotton fabric

“…For example, Jiang et al . synthesised amphiphilic zwitterionic poly(etheramine), which showed excellent dispersing ability for inorganic pigments and Hao et al . have shown that SMA has efficiency as a dispersant for organic pigments.…”