Itandukaniro rya viscosity ya PDMS (polydimethylsiloxane, izwi kandi nka dimethyl silicone yamavuta) iterwa ahanini nurwego rwa polymerisime, kandi ikanagira ingaruka nkeya kumiterere ya molekile (nkubwoko bwamatsinda yanyuma). Ibikurikira nubusobanuro burambuye duhereye kumiterere yimiti:
Urwego rwa polymerisation nicyo kintu cyibanze kigena ubwiza bwa PDMS.
Imiterere ya molekulire ya PDMS ni urunigi rw'umurongo - nka, hamwe nigice gisubiramo ari - Si (CH₃) ₂ - O -, kandi formulaire rusange irashobora kugaragazwa nka: (CH₃) ₃SiO - [Si (CH₃) ₂ - o {{{}}} ibice).
Urwego rwo hejuru rwa polymerisiyonike (nini nini n): uko urunigi rurerure, niko imbaraga za der der Waals zikomeye (cyane cyane imbaraga zo gukwirakwiza) hagati ya molekile, kandi niko urwego ruri hagati yurunigi, bikaviramo amazi mabi nubukonje bwinshi. Hasi urwego rwa polymerisiyasi (ntoya n), niko bigabanya urunigi rwa molekile, imbaraga za intermolecular zidakomera, ntizigabanuka, niko bigenda neza, kandi bikagabanuka.
Kurugero, urwego rwa polymerisiyasi yo hasi - ubukonje bwa PDMS (nka 100 mm² / s) mubisanzwe ni bike (n ni hafi mirongo). Urwego rwa polymerisation yo hejuru - viscosity PDMS (nka 100.000 mm² / s) irashobora kuba hejuru nkibihumbi cyangwa ibihumbi.