Ngaba i-HPMC kunye ne-CMC zingaxutywa
I-Methyl celluloseimhlophe okanye imhlophe njenge-fiber okanye i-granular powder; Ayinavumba, ayinancasa. Le mveliso emanzini iyadumba ibe yisisombululo se-colloidal esicacileyo okanye esirhabaxa kancinci; Ayinyibiliki kwi-ethanol epheleleyo, i-chloroform okanye i-diethyl ether. Isasazeka ngokukhawuleza kwaye idumbe emanzini ashushu kwi-80-90 ℃, kwaye inyibilike ngokukhawuleza emva kokuba ipholile. Isisombululo samanzi sizinzile kubushushu begumbi, kwaye sinokuyijela kubushushu obuphezulu, kwaye ijeli inokutshintsha kunye nesisombululo kunye nobushushu.
Inokumanzika okugqwesileyo, ukusasazeka, ukunamathela, ukuqina, ukuxutywa, ukugcinwa kwamanzi kunye nokwenziwa kwefilimu, kunye nokungangeni kweoyile. Ifilimu inokuqina okugqwesileyo, ukuguquguquka kunye nokucaca. Ngenxa yokuba ayisiyo ionic, ingahambelana nezinye ii-emulsifiers, kodwa kulula ukuyikhupha ityuwa, kwaye isisombululo sizinzile kuluhlu lwe-PH2 — 12. I-Sodium carboxymethyl cellulose Le mveliso yityuwa yesodium ye-cellulose carboxymethyl ether, yeye-anionic cellulose ether, imhlophe okanye imhlophe njenge-milky fibrous powder okanye i-particle, ixinana yi-0.5-0.7 g/cubic centimeter, phantse ayinavumba, ayinancasa, i-hygroscopic. Kulula ukuyisasaza emanzini kwisisombululo se-gelatinous esicacileyo, esinganyibilikiyo kwi-ethanol nakwezinye izinyibilikisi ze-organic.
Xa i-pH yesisombululo samanzi ingama-6.5 — 8.5, i-viscosity ye-slurry iyancipha kakhulu xa i-pH ingaphezulu kwe-10 okanye ingaphantsi kwe-5, kwaye ukusebenza kwayo kubhetele xa i-pH ingaphezulu kwe-7. Ukuze uzinzo lobushushu, i-viscosity inyuka ngokukhawuleza ngaphantsi kwama-20℃, itshintsha kancinci kwi-45℃, kwaye i-colloid denaturation kunye ne-viscosity kunye neempawu ziyancipha kakhulu xa zishushu ixesha elide ngaphezulu kwama-80℃. Inyibilika lula emanzini, isisombululo esicacileyo; Izinzile kakhulu kwisisombululo se-alkaline, kwaye kulula ukuyi-hydrolyze kwimeko ye-asidi. Xa ixabiso le-pH lingama-2-3, kuya kubakho imvula, kwaye kuya kubakho imvula kwimeko yetyuwa yesinyithi eninzi. I-Hydroxypropyl methyl cellulose, ekwaziwa ngokuba yi-hydroxypropyl methyl cellulose, i-cellulose hydroxypropyl methyl ether, kukukhethwa kwe-cotton cellulose ecocekileyo kakhulu njengezinto eziluhlaza, phantsi kweemeko ze-alkaline ngokulungiswa okukhethekileyo kunye nokulungiswa.
Iyanyibilika emanzini nakwi-polar C eninzi kunye nomlinganiselo ofanelekileyo we-ethanol/amanzi, i-propanol/amanzi, i-dichloroethane, njl.njl., ayinyibiliki kwi-diethyl ether, i-acetone, i-ethanol epheleleyo, idumba emanzini abandayo ibe yisisombululo se-colloidal esicacileyo okanye esixutyiweyo kancinci. Isisombululo samanzi sinomsebenzi womphezulu, sibonakala kakhulu kwaye sisebenza ngokuzinzileyo.I-HPMCinepropathi yejeli eshushu. Emva kokufudumeza, isisombululo samanzi semveliso senza i-gel precipitation, size sinyibilike emva kokuba sipholile. Ubushushu bejeli beenkcukacha ezahlukeneyo buhlukile.
Ixesha leposi: Epreli-25-2024