Hydroxypropyl methylcellulose e sebelisoa e le substrate ea thepa e tala ho hlahisa oli, e ka etsang hore tsoekere e sebelisoe ka botlalo, ea ntlafatsa sekhahla sa tšebeliso ea thepa e tala, ea fokotsa bongata ba substrate e setseng morong oa belisoa, le ho fokotsa litšenyehelo tsa kalafo ea metsi a litšila. Tšobotsi ena ea hydroxypropyl methylcellulose e thusa ho ntlafatsa lits'ebetso tsa batch, fed-batch le fermentation e tsoelang pele, ho qoba letoto la mathata a kang taolo ea motsoako o mahareng le sekhahla sa ho qhibiliha; e boetse e thusa ho laola ts'ebetso ea fermentation.
Hydroxypropyl methylcellulose, e leng cellulose e tala, e ka ba k'hothone e hloekisitsoeng kapa pulp ea lehong. Ho hlokahala haholo ho e sila pele e etsoa alkalizing kapa nakong ea alkalizing. Ho sila ke ho senya thepa e tala ea cellulose ka matla a mechini. Sebopeho sa boemo ba ho bokellana ha li-macromolecule tsa cellulose se ka fokotsa tekanyo ea kristale le polymerization, sa eketsa sebaka sa eona sa bokaholimo, ka hona sa ntlafatsa phihlello le bokhoni ba karabelo ea lik'hemik'hale ba reagent ea karabelo ho lihlopha tse tharo tsa hydroxyl sehlopheng sa lesale la glucose sa macromolecule ea cellulose.
Leha molao-motheo oa ho kopanya hydroxypropyl methylcellulose le etherification o se thata, libaka tse fapaneng tsa alkalization, ho sila thepa e tala, etherification, ho hlaphoheloa ha solvent, karohano ea centrifugal, ho hlatsoa le ho omisa li kenyelletsa palo e kholo ea mahlale a bohlokoa le moelelo o ruileng oa 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 taolo ke litiisetso tse ntle bakeng sa boleng bo tsitsitseng ba sehlahisoa le litsamaiso tse tšepahalang tsa tlhahiso.
Kaha tshebetso ya hydroxypropyl methylcellulose e tshwana le di-ether tse ding tse qhibilihang ka metsing, e ka sebediswa penteng ya latex le dikarolong tsa pente ya resin e qhibilihang ka metsing e le moemedi ya etsang filimi, sethibela-mafu, emulsifier le stabilizer.
Etsa hore filimi ea ho roala e be le khanyetso e ntle ea ho robeha, ho lekana le ho khomarela, 'me e ntlafatse tsitsipano ea bokaholimo, botsitso ho asiti le alkali, le ho lumellana le mebala ea tšepe. Hydroxypropyl methylcellulose e na le phello e ntle e le setenya bakeng sa pente e tšoeu ea polyvinyl acetate e thehiloeng metsing. Tekanyo ea ho nkeloa sebaka ha ether ea cellulose e ea eketseha, 'me khanyetso khahlanong le khoholeho ea baktheria le eona ea eketseha.
Nako ea poso: Tshitwe-22-2022