The products of the reaction are polymerized by {HEAD ~ hydrolysis} of {TAIL ~ the alkoxysilane groups} to produce an organic containing silica network 
of
The products of the reaction are polymerized by { HEAD ~ hydrolysis } of { TAIL ~ the alkoxysilane groups } to produce an organic containing silica network
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH