Ngokuqhelekileyo, i-viscosity ye-hydroxypropyl methylcellulose iphezulu.Nangona kunjalo, kukwaxhomekeke kwiqondo lokuthatha indawo kunye nomndilili weqondo lokuthatha indawo.IHydroxypropyl methyl cellulose yeye-non-ionic cellulose ether, imbonakalo ingumgubo omhlophe, ayinavumba kwaye ayinancasa, inyibilika emanzini kunye nezona zinyibilikisiweyo zepolar eziphilayo kunye nomlinganiselo ofanelekileyo we-ethanol / amanzi, ipropanol / amanzi, i-dichlorethylene Ayinyibiliki kwi-alkanes, i-acetone, kunye ne-ethanol epheleleyo, kwaye idumba ibe yisisombululo esicacileyo okanye esincinci se-colloidal kumanzi abandayo.Isisombululo samanzi sinomsebenzi ongaphezulu, senza ifilimu encinci emva kokumisa, iguqulelwe ukuguqulwa ukusuka kwi-sol ukuya kwi-gel ngokulandelelana xa kushushu kunye nokupholisa.Ukucaca okuphezulu kunye nokusebenza okuzinzileyo.
IHydroxypropyl methylcellulose inepropathi ye-thermal gelation.Emva kokuba isisombululo se-aqueous semveliso sishushu, senza i-gel kunye ne-precipitates, kwaye ichithe emva kokupholisa.Ukushisa kwe-gelation yeenkcukacha ezahlukeneyo kuyahluka.Ukunyibilika kuyahluka kunye ne-viscosity.I-viscosity ephantsi, inkulu i-solubility.Iipropati ze-hydroxypropyl methylcellulose ezineenkcazo ezahlukeneyo zahlukile.Ukuchithwa kwe-hydroxypropyl methylcellulose emanzini akuchaphazeli ixabiso le-pH.
Iimpawu: Ineempawu zokukwazi ukutyeba, ukukhutshwa kwetyuwa, ukuzinza kwe-PH, ukugcinwa kwamanzi, ukuzinza kwe-dimensional, ipropathi egqwesileyo yokwenza ifilimu, uluhlu olubanzi lokuchasana kwe-enzyme, ukusabalalisa kunye nokubambisana.
Ukugcinwa kwamanzi kwiimveliso ze-hydroxypropyl methylcellulose zihlala zichatshazelwa zezi zinto zilandelayo:
1. Ukufana kwe-hydroxypropyl methylcellulose
I-hydroxypropyl methylcellulose efunyenwe ngendlela efanayo, i-methoxyl kunye ne-hydroxypropoxyl zisasazwa ngokulinganayo, kwaye izinga lokugcinwa kwamanzi liphezulu.
2. I-Hydroxypropyl methylcellulose i-thermal gel yokushisa
Ukuphakama kobushushu bejeli ye-thermal, kuphezulu izinga lokugcinwa kwamanzi;kungenjalo, isantya esezantsi yokugcina amanzi.
3. I-Viscosity ye-hydroxypropyl methylcellulose
Xa i-viscosity ye-hydroxypropyl methylcellulose inyuka, izinga lokugcinwa kwamanzi liyanda;xa i-viscosity ifikelela kwinqanaba elithile, ukunyuka kwezinga lokugcinwa kwamanzi kuthanda ukuba mnene.
4. Isixa se-hydroxypropyl methylcellulose esongeziweyo
Ubuninzi be-hydroxypropyl methylcellulose eyongeziweyo, iphezulu izinga lokugcinwa kwamanzi kunye nesiphumo esingcono sokugcina amanzi.Kuluhlu lwe-0.25-0.6% yokongezwa, izinga lokugcinwa kwamanzi landa ngokukhawuleza ngokunyuka kwexabiso elongezelelweyo;xa isixa-mali esongeziweyo sinyuka ngakumbi, ukunyuka kwezinga lokugcinwa kwamanzi kuyehla.
Ixesha lokuposa: Mar-14-2023