It is believed that {HEAD ~ the nanoparticle} sized {TAIL ~ extender pigment particles}, for example illustrated as ZnO, have an affinity for the surface of TiO2 particles that aides in spacing the TiO2 particles 
sized
It is believed that { HEAD ~ the nanoparticle } sized { TAIL ~ extender pigment particles } , for example illustrated as ZnO , have an affinity for the surface of TiO2 particles that aides in spacing the TiO2 particles
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH