Hydroxypropyl methylcellulose e sebelisoa e le substrate e tala ho hlahisa oli, e ka hlokomelang ts'ebeliso ea tsoekere e felletseng, ea ntlafatsa sekhahla sa ts'ebeliso ea lisebelisoa tse tala, ea fokotsa palo e setseng ea substrate ka moro oa belisoa, le ho fokotsa litšenyehelo tsa ho hloekisa metsi a litšila.hydroxypropyl methylcellulose ena Tšobotsi e ka sehloohong e thusa ho ntlafala ha betch, fed-batch le mekhoa e tsoelang pele ea ho belisoa, ho qoba letoto la mathata a kang taolo ea sebopeho se mahareng le sekhahla sa dilution;e boetse e thusa ho laola mokhoa oa ho belisa.
Hydroxypropyl methylcellulose, selulose e tala, e ka hloekisoa ka k'hothone kapa makhasi a lehong.Ho bohlokoa haholo ho e silakanya pele ho alkalization kapa nakong ea alkalization.Ho senya ke ho senya thepa e tala ea cellulose ka matla a mochine.Sebopeho sa boemo ba aggregation sa macromolecules ea cellulose se ka fokotsa tekanyo ea crystallinity le polymerization, ea eketsa sebaka sa eona sa holimo, ka tsela eo, ho ntlafatsa phihlello le bokhoni ba karabelo ea lik'hemik'hale tsa reagent ea karabelo ho lihlopha tse tharo tsa hydroxyl ho sehlopha sa lesale la tsoekere la cellulose macromolecule.
Le hoja molao-motheo oa etherification oa hydroxypropyl methylcellulose o sa rarahane, libaka tse fapa-fapaneng tsa alkalization, ho senya thepa e tala, etherification, ho hlaphoheloa ha solvent, karohano ea centrifugal, ho hlatsoa le ho omisa ho kenyelletsa palo e kholo ea theknoloji ea bohlokoa le litlhaloso tse ngata tsa tsebo.Bakeng sa mefuta e fapaneng ea lihlahisoa, tikoloho ka 'ngoe e na le maemo a morao-rao a taolo, joalo ka mocheso, nako, khatello le taolo ea phallo ea thepa.Lisebelisoa tse thusang le lisebelisoa tsa ho laola ke litiiso tse ntle bakeng sa boleng bo tsitsitseng ba sehlahisoa le mekhoa e tšepahalang ea tlhahiso.
Kaha ts'ebetso ea hydroxypropyl methylcellulose e tšoana le li-ether tse ling tse qhibilihang ka metsing, e ka sebelisoa ka pente ea latex le likarolo tsa pente ea resin e qhibilihang ka metsi e le moemeli oa ho etsa filimi, thickener, emulsifier le stabilizer.
Etsa hore filimi ea ho roala e be le khanyetso e ntle ea ho apara, ho lekana le ho khomarela, le ho ntlafatsa tsitsipano ea holim'a metsi, botsitso ho acid le alkali, le ho lumellana le li-pigments tsa tšepe.Hydroxypropyl methylcellulose e na le phello e ntle e le motenya bakeng sa pente e tšoeu ea polyvinyl acetate ea metsi.Tekanyo ea ho nkela sebaka sa cellulose ether ea eketseha, 'me ho hanyetsa khoholeho ea baktheria le hona hoa ntlafatsoa.
Nako ea poso: Dec-22-2022