Polycondensation yɛ nnuru a ɛma monomers a ɛwɔ akuw abien anaa nea ɛboro saa a ɛyɛ adwuma no yɛ adwuma ma ɛyɛ kɛse-molecular compounds, bere a ɛsan nso ma molecule nketewa ba.
Ansa na yɛbɛka organosiloxanes a wɔde polycondensation reactions ayɛ ho asɛm no, ɛho hia sɛ yedi kan de condensation reactions ahorow a ebetumi ayɛ SI-0-Si bonds ba: Si-0-Si bonds betumi aba denam condensation of organosilanes ne dwumadi akuw koro no ara so, te sɛ te sɛ
Wɔn mu no, r yɛ methyl anaa ethyl mpɛn pii. Wɔ saa nneyɛe yi mu no, condensation reaction a silanol yɛ no ne nea ɛho hia sen biara. Tebea horow a ɛwɔ alkoxysilanes mu no yɛ katee mmom. Mpɛn pii no, ɛho hia sɛ ɔhyew, nhyɛso ne nneɛma a ɛma nneɛma yɛ kɛse te sɛ lewis acid ka ho, bere a acetoxy akuw no mu nsu a ɛyɛ nwini no betumi aba bere a wɔayɛ no hyew a ɛboro digrii 175 nkutoo no . SI-O-Si bonds no betumi ayɛ nea ɛnam organosilicon dwumadi akuw ahorow ntam a ɛyɛ wɔn ho wɔn ho so no so na ɛba. Condensation reactions a ɛtaa ba wɔ dwumadie akuo ahodoɔ mu no bi ne ahodoɔ a ɛdidi soɔ yi:
Wɔn mu no, r yɛ methyl anaa ethyl mpɛn pii, na m yɛ dade. Efi saa nneyɛe yi mu no, yebetumi ahu sɛ silanol ne kuw a ɛyɛ adwuma a ɛtaa yɛ adwuma wɔ wɔn mu, a wobetumi anya denam chlorosilane, alkoxysilane, ne nea ɛkeka ho nsu a ɛyɛ hyew so.Wɔ nsusuwii mu no, wobetumi de atifi hɔ nsu a ɛyɛ nwini no nyinaa adi dwuma de ayɛ polysiloxanes kɛse, nanso wɔ nnwuma mu no, nsu a wɔde yɛ nneɛma a wɔde yɛ nsu a wɔde yɛ nneɛma a wɔde yɛ nneɛma a wɔde yɛ nneɛma a wɔde yɛ nneɛma a wɔde yɛ no nkutoo.