I-Methylcellulose (MC) kunye ne-Hydroxypropyl Methylcellulose (HPMC) zombini zisetyenziswa ngokuqhelekileyo i-cellulose e-soluble derivatives yamanzi, esetyenziswa ngokubanzi kukutya, amayeza, ukwakhiwa kunye nokunyamekela komntu.
1. Ukwahluka kwesakhiwo
I-Methylcellulose (MC):
I-Methylcellulose yi-cellulose derivative efunyenwe ngokutshintsha inxalenye yeqela le-hydroxyl ye-cellulose nge-methyl (-OCH3).
Ubume bayo bekhemikhali bulula, ikakhulu yenziwe ngamathambo e-cellulose kunye ne-methyl substituent.
IHydroxypropyl Methylcellulose (HPMC):
I-HPMC yenziwa ngokuzisa ngokuqhubekayo i-hydroxypropyl (-C3H7O) ebambeleyo ngokwesiseko se-methylcellulose.
Olu tshintsho lwesakhiwo lwenza ukuba lube luncedo ngakumbi malunga ne-solubility kunye neempawu ze-viscosity emanzini.
2. Ukunyibilika
I-Methylcellulose inyibilika ngokulula kumanzi abandayo, kodwa ayinyibiliki lula emanzini ashushu, kwaye ihlala ibonisa indalo ye-colloidal. Oku kwenza iipropathi zeMC zinokutshintsha xa ubushushu bunyuka.
IHydroxypropyl Methylcellulose inokunyibilika kakuhle kumanzi abandayo nashushu, kwaye ukunyibilika kwayo kungcono kune-methylcellulose. I-HPMC isenakho ukugcina ukunyibilika kwayo kwamanzi kumaqondo obushushu aphezulu kwaye ifanelekile kwizicelo ezifuna unyango lobushushu.
3. Iimpawu zeViscosity
I-Methylcellulose ine-viscosity ephantsi kwaye ifanelekile ukwakheka okungadingi i-viscosity ephezulu.
I-Hydroxypropyl methylcellulose ine-viscosity ephezulu kwaye inokulungiswa ngokutshintsha ubunzima bayo be-molecular kunye neqondo lokutshintshwa. Oku kwenza i-HPMC ibe bhetyebhetye ngakumbi kwizicelo ezahlukeneyo, ngakumbi kumashishini okwakha kunye namayeza.
4. Iindawo zokufaka izicelo
I-Methylcellulose isoloko isetyenziswa kushishino lokutya njengento etyebisayo, i-emulsifier kunye ne-stabilizer, kwaye ikwasetyenziswa kwezinye iimveliso zamachiza njengento yokugquma amachiza.
IHydroxypropyl methylcellulose inesicelo esibanzi. Ukongeza kokutya kunye namayeza, ikwasetyenziswa ngokubanzi kwizinto zokwakha (ezifana nodaka olomileyo) kunye neemveliso zokhathalelo lomntu (ezifana ne-skin creams kunye ne-shampoos) ngenxa yezinto ezintle zokwenza ifilimu kunye nokubambelela.
5. Iimpawu zokusebenza
I-Methylcellulose inokugcinwa kwamanzi okugqwesileyo kunye neempawu zokwenza ifilimu kwaye isoloko isetyenziswa kwiimveliso ezifuna ukugcina umswakama.
I-Hydroxypropyl methylcellulose inokumelana nokushisa okulungileyo kunye neempawu ezibalaseleyo zokwenza ifilimu ngaphezu kokugcinwa kwamanzi, ngoko ke yenza ngcono kwizicelo ezinonyango oluphezulu lweqondo lokushisa.
6. Ukhuseleko kunye nokuzinza
Zombini izongezo zokutya ezingezizo zinetyhefu kwaye zibonwa njengezikhuselekileyo. Nangona kunjalo, i-HPMC inokukhethwa kwizicelo ezithile ngenxa yozinzo olungcono kunye nokuhambelana.
I-Methylcellulose kunye ne-hydroxypropyl methylcellulose ihluke kakhulu kwisakhiwo sekhemikhali, i-solubility, iimpawu ze-viscosity kunye neendawo zokusetyenziswa. Ukukhethwa kwezinto ezifanelekileyo zihlala kuxhomekeke kwiimfuno zesicelo esithile. I-MC ilungele ukuqina okulula kunye nezicelo zokuzinzisa, ngelixa i-HPMC ifaneleka ngakumbi kwizicelo ezintsonkothileyo zemizi-mveliso kunye nezorhwebo ngenxa yokunyibilika kwayo okuphezulu kunye nesakhono sohlengahlengiso lwe-viscosity.
Ixesha lokuposa: Oct-21-2024