Viscosity arọ molekụla nke hydroxypropyl methyl cellulose

Enwere ike igosipụta ịdị arọ molekul nke HPMC site na viscosity ngwọta ya na ihe mgbaze ejiri.
Ọ gwụla ma ekwuputara n'ụzọ ọzọ, a na-eji UBBELOHDE viscometer tụọ arọ molecular nke HPMC ebe a na 20 ℃ site na iji ngwọta mmiri nwere 2% (arọ) nke HPMC.
Ogo ya na-akpọnwụ bụ ihe dịka 5 ruo 200000 mpa. Sd na-eji hydroxypropyl methyl cellulose ether dị ka onye nkwusioru maka nkwusioru polymerization nke ethylene unsaturated monomers. Nkwụsi ike ahọpụtara bụ ihe dịka 5 mpa. s, site na ihe dika lOmpa. S. ruo ihe dị ka 400 mpa. s, nke dị ihe dịka I00mPa. s.
S, 10100, na 400mpa S bụ n'otu n'otu na ọnụ ọgụgụ nkezi molekul arọ nke 1000013000,26000, na 410000 HPMC ether aqueous ngwọta na-eji dị ka thickener dị ka mepụtara na viscosity na 20 ℃, dịkarịa ala banyere l, ompa. Ọ ka mma ịbụ ihe dịka 15000 mpa. s, ya mere viscosity nke ngwọta na-abụkarị ihe dị ka 200000 ka iso, na ọ ka mma ịbụ 120000 ruo 100000 m pa. s, na ọ ka mma ịbụ 75000 mpa Ya mere ọnụ ọgụgụ nkezi molecular arọ (M).
Nkezi molekụla arọ (M) nke ọnụ ọgụgụ a nwere ike ikpebi site osmometry site na ihe dịka 20000, ka mma site na ihe dịka 55000, ka mma site na ihe dịka 120000; Ihe dị ka 280000, 250000 ka mma, na 2200000 ka mma.

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