Kedu ihe bụ nkwụsi ike pH nke hydroxyethylcellulose?

Hydroxyethylcellulose (HEC) bụ polymer na-agbaze mmiri nke a na-ejikarị eme ihe na ngwa dị iche iche dị ka adhesives, mkpuchi, na ngwaahịa nlekọta onwe onye. Nkwụsi ike pH nke HEC na-adabere n'ọtụtụ ihe, gụnyere kpọmkwem ọkwa nke HEC, pH nso nke ngwa ahụ, na oge nke ikpughe na gburugburu pH.

HEC na-akwụsikarị ike n'ime pH nke 2-12, nke na-ekpuchi oke acidic na ọnọdụ alkaline. Otú ọ dị, ikpughe ogologo oge na ọnọdụ pH dị oke egwu nwere ike ime ka HEC daa mbà, na-eme ka ọ ghara ịdị na-eme ka ọ dịkwuo ike ma na-eme ka ọ dị ike.

Na ụkpụrụ pH acidic, n'okpuru pH nke 2, HEC nwere ike ịnweta hydrolysis, na-eduga na mbelata nke ịdị arọ molecular na mbelata viscosity. N'ihe dị elu pH nke alkaline dị elu, karịa pH 12, HEC nwere ike ịnweta alkaline hydrolysis, na-eduga na mfu nke ihe na-eme ka ọ sie ike.

Nkwụsi ike pH nke HEC nwekwara ike imetụta ọnụnọ nke kemịkalụ ndị ọzọ na nhazi ahụ, dị ka salts ma ọ bụ surfactants, nke nwere ike imetụta pH na ionic ike nke ngwọta. N'ọnọdụ ụfọdụ, ịgbakwunye acid ma ọ bụ isi nwere ike ịdị mkpa iji dozie pH ma nọgide na-enwe nkwụsi ike nke ngwọta HEC.

N'ozuzu, HEC na-emekarị ka ọ kwụsie ike n'ime oke pH, ma ọ dị mkpa ịtụle ngwa ngwa na ọnọdụ nhazi iji hụ na HEC na-edobe ihe onwunwe ya chọrọ ka oge na-aga.