Fig. 1

Effect of the mass ratio of MTMS to TiO2 on the degree of lipophilicity"

Fig. 2

Effect of reaction time on lipophilicity: （a） Hydrolysis time and （b） polycondensation time"

Fig. 3

Effects of catalyst dosage on the degree of lipophilicity: （a） acid （hydrochloric acid） and （b） base （ammonia）"

Fig. 4

FTIR spectra of TiO2 nanoparticles: （a） Polysiloxane,（b） TiO2 before coating （U-TiO2）, and （c） TiO2 after coating （PMTMS/TiO2）"

Fig. 5

SEM images before and after coating for TiO2 nanoparticles:（a and b） TiO2 before coating; （c and d） TiO2 after coating"

Fig. 6

Particle size distribution of titanium dioxide before and after coating by polysiloxane at the mass ratio of MTMS to TiO2 of 3∶1"

Fig. 7

Contact angle values of TiO2 before coating （a） and after coating （b）"

Fig. 8

EDS elemental maps and spectra of Ti in different samples: （a） TiO2 before coating; （b） TiO2 after coating; （c） spectra at the same location for the sample after coating"

Fig. 9

TGA curves of uncoated TiO2 particles and the coated TiO2 particles which were prepared at 40 ℃, reaction time of 5 h, and reactant ratio of 3∶1"

Fig. 10

Test results of suspension in xylene for the titanium dioxide before and after coating"

Fig. 11

Formation mechanism of polysiloxane-coated titanium dioxide"