Hadda oo ay jiraan suuqyo badan oo loogu talagalay hydroxypropyl carboxymethyl cellulose qiimuhuna waa isku mid, sida ugu fudud oo dhakhso leh loo go'aamiyo tayada hydroxypropyl carboxymethyl cellulose waxay noqotay arrin muhiim ah! Haddaba sida loo xukumo tayada hydroxypropyl methylcellulose? Waxa ugu horreeya ee la eego waa caddaanka hydroxypropyl cellulose; in kasta oo caddaanku aanu go'aamin karin in HPMC uu ku habboon yahay isticmaalka, qaar ka mid ah soosaarayaasha aan xishoodka lahayn ayaa ku dari doona wakiilka caddaymaha inta lagu jiro farsamaynta, taas oo saameyn doonta tayada. Laakiin guud ahaan marka la hadlo, inta badan ether-yada cellulose-ka ugu fiican waxay leeyihiin caddaan wanaagsan.
Marka labaad, waxay kuxirantahay ganaaxa hydroxypropyl methylcellulose: xajmiga walxaha hydroxypropyl carboxymethyl cellulose waa 80-100 mesh, in ka yar mesh 120, iyo hydroxyethyl cellulose HECHPMC waa qiyaastii 100 mesh. Inta badan hpmc waa 60-80 mesh. Guud ahaan, marka ay jilicsanaato methyl cellulose, ayaa si fiican u kala firdhisan.
Caddaynta ether-ka cellulose ee xalka: ku rid HPMC biyaha si ay u soo saarto xal kolloid ah oo hufan, caddaynta sare, caddaynta sare, waxay hoos u dhigtaa walxaha aan la milmin.
Marka badeecada la diiriyo, way dhalaalaysaa ama barkadaha ayay dhalaashaa. Waa hydrophobic iyo milmay. La taaban karo ayaa fure u ah isku xidhka iyo nadiifinta alaabta ceeriin ee budada suufka ah ee biyaha u adkeysaneysa. Mabda'a caabbinta biyaha waa sida soo socota: marka budada cinjirka dib loo cusboonaysiin karo iyo sibidhka lagu qaso biyaha, budada cinjirka waxay sii wadi doontaa inay ku soo noqoto qaabka emulsion-ka asalka ah, iyo qaybaha cinjirku waxay si siman u kala firdhiyaan dareeraha sibidhka. Ka dib markii sibidhku la kulmo biyaha, falcelinta fuuq-celinta ayaa bilaabma, iyo Ca (OH) xalka 2 wuxuu gaaraa saturation iyo crystals ayaa soo degdegay. Isla mar ahaantaana, crystals ettringite iyo calcium silicate hydrate colloid ayaa la sameeyay, iyo qaybaha cinjirka waxaa lagu shubaa on jel iyo qaybaha sibidhka ee aan biyo lahayn, sida falcelinta fuuq-celinta, alaabooyinka fuuqbaxa ayaa sii kordhaya, iyo qaybaha cinjirka si tartiib tartiib ah ku soo ururi meelaha bannaan ee walxaha aan noolaha ahayn sida sibidhka, oo ka samee lakab cufan oo cufan oo ku yaal dusha sare ee jelka sibidhka. , Sababtoo ah si tartiib tartiib ah u yaraynta qoyaanka qallalan, qaybaha caatada ah ee si dhow loo soo ururiyey ee jelka iyo faaruqinta ayaa xinjirta si ay u sameeyaan filim joogto ah, samaynta isku dar ah oo leh matrix interpenetrating ee koollada sibidhka, iyo samaynta koollada sibidhka iyo budada kale Isku-darka waa isku dheggan yihiin.
Waqtiga boostada: Meey-11-2023