Si loo xukumo tayada hydroxypropyl methyl cellulose

Haddahydroxypropyl carboxymethyl celluloseSuuqa iibka oo aad iyo aad u badan, qiimuhu maaha mid isku dheelitiran, sida ugu dhakhsaha badan ee loo nadiifiyo tayada hydroxypropyl methyl cellulose waxay noqotay dhibaato muhiim ah! Haddaba sida loo xukumo tayada hydroxypropyl methylcellulose? Waxa ugu horreeya ee la eego waa caddaanka hydroxypropyl cellulose; Inkasta oo caddaanku aanay caddayn karin in HPMC uu ku habboon yahay codsiga, laakiin habka ka-hortagga waxaa sidoo kale jira qaar ka mid ah soo-saareyaasha xun waxay ku dari doonaan wakiilka caddeynta, waxay dhaawici doontaa tayada. Laakiin guud ahaan marka la hadlo, inta badan ether cellulose aad u fiican ayaa ka fiican caddaanka.

Marka labaad, si aad u aragto ganaaxa hydroxypropyl methyl cellulose: hydroxypropyl carboxymethyl cellulose size qayb ee 80-100 mesh, 120 mesh ka yar, hydroxyethyl cellulose HECHPMC ku saabsan 100 mesh. HPMC inta badan 60-80 mesh, guud ahaan methyl cellulose ka jilicsan, kala firidhsanaanta ugu fiican.

Xalka caddaynta ether cellulose:HPMCgeliyo biyaha si ay u soo saaraan xal kolloid hufan, arag sida sare xallinta, sare xallinta, in aan milmin walax kiimikaad waa hoose.

Marka badeecada la kululeeyo, waa la dhalaaliyaa ama la isku daraa ka dibna waa la dhalaaliyaa. Waa hydrophobic iyo biyo-milmi. La taaban karo waa furaha isku xidhka iyo nadiifinta alaabta ceeriin ee budada suufka ah ee biyaha u adkeysaneysa. Mabda'a u adkaysta biyaha waa sida soo socota: Habka lagu daro biyaha iyo walaaqaya budada cinjirka ee dib loo cusboonaysiin karo iyo sibidhka, budada cinjirka ayaa ku soo laabanaysa qaabka emulsion-ka asalka ah, qaybaha cinjirka ayaa si siman u kala firdhiya koolada sibidhka. Ka dib markii sibidhku la kulmo biyaha, falcelinta fuuq-celinta ayaa bilaabma, iyo Ca (OH) 2 xalku wuxuu gaaraa saturation oo soo daadi crystals, isla mar ahaantaana, crystals ettringite iyo colloid calcium silicate hydrate ayaa la abuuraa. Qaybaha cinjirka ah waxa lagu shubaa jel iyo qaybo sibidh ah oo aan biyo lahayn. Horumarka falcelinta fuuq-celinta, alaabada fuuq-celinta ayaa sii kordheysa, qaybaha cinjirka ayaa si tartiib tartiib ah loogu soo ururiyaa madhan walxaha aan noolaha ahayn sida sibidhka, waxayna sameeyaan lakab ururin ah oo ku dhow dusha jel sibidhka. Sababo la xiriira hoos u dhigista tartiib tartiib ah ee biyaha qalalan, Qaybaha cinjirka ee si adag loo soo buuxiyay ayaa dib loo kala firdhiyey ee jeelka iyo faaruqinta isku urursi si ay u sameeyaan filim joogto ah, samaynta isku dar ah koollada sibidhka oo dhex gala matrix, iyo isku xidhka koollada sibidhka iyo isku-darka budada kale.