Hydroxypropyl methylcellulose waxaa loo isticmaalaa sidii substrate walxo ceeriin ah si loo soo saaro saliid, taas oo xaqiijin karta isticmaalka wadarta sonkorta, wanaajiso heerka isticmaalka alaabta ceeriin, la yareeyo qadarka haraaga substrate ee maraq halsano, iyo in la yareeyo kharashka daaweynta biyaha wasakhda ah. Tani hydroxypropyl methylcellulose Dabeecadda ugu muhiimsan waxay ku habboon tahay hagaajinta dufcaddii, dufcaddii quudinta iyo hababka halsano ee joogtada ah, ka fogaanshaha dhibaatooyin taxane ah sida xakamaynta halabuurka dhexdhexaadka ah iyo heerka milanka; waxa kale oo ay ku haboon tahay nidaaminta habka halsano.
Hydroxypropyl methylcellulose, cellulose alaabta ceeriin, waxaa lagu safayn karaa suuf ama saxarka alwaax. Aad bay lagama maarmaan u tahay in la burburiyo ka hor alkalization ama inta lagu jiro alkalization. Burburinta ayaa ah in la burburiyo walxo cellulose ah oo lagu burburiyo tamarta farsamada. Qaab dhismeedka gobolka ee isugeynta macromolecules cellulose wuxuu yarayn karaa heerka crystallinity iyo polymerization, kordhinta aagga dusha sare, taas oo hagaajinaysa helitaanka iyo awoodda falcelinta kiimikada ee falcelinta falcelinta saddexda kooxood ee hydroxyl ee kooxda giraanta gulukooska ee macromolecule cellulose.
Inkasta oo mabda'a isku-dhafka ah ee etherification ee hydroxypropyl methylcellulose uusan ahayn mid adag, deegaannada kala duwan ee alkalization, burburinta alaabta ceeriin, etherification, soo kabashada dareeraha, kala-soocidda centrifugal, dhaqidda iyo qalajinta waxay ku lug leedahay tiro badan oo tiknoolajiyada muhiimka ah iyo tilmaamo aqoon qani ah. Noocyada kala duwan ee alaabooyinka, deegaan kastaa wuxuu leeyahay xaaladihii ugu dambeeyay ee xakamaynta, sida heerkulka, wakhtiga, cadaadiska iyo xakamaynta socodka alaabta. Qalabka caawinta iyo qalabka xakamaynta ayaa ah dammaanad wanaagsan oo loogu talagalay tayada badeecada deggan iyo nidaamyada wax soo saarka ee la isku halayn karo.
Maaddaama waxqabadka hydroxypropyl methylcellulose uu la mid yahay ether-yada kale ee biyaha-milmi kara, waxaa loo isticmaali karaa sida wakiilka filim-samaynta, dhumuc weyn, emulsifier iyo xasiliye ee rinjiga cinjirka iyo qaybaha rinjiga biyaha-milmi kara.
Samee filimka dahaarka leh caabbinta xirashada wanaagsan, sinnaanta iyo adhesion, oo wanaaji xiisadda dusha sare, xasilloonida aashitada iyo alkali, iyo waafaqsanaanta midabada macdan. Hydroxypropyl methylcellulose waxay leedahay saameyn wanaagsan sida dhumuc weyn oo loogu talagalay rinjiga polyvinyl acetate ee biyaha ku salaysan. Heerka beddelka etherka cellulose waa la kordhiyaa, iyo iska caabinta nabaad-guurka bakteeriyada ayaa sidoo kale la xoojiyaa.
Waqtiga boostada: Febraayo-17-2023