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Hydroxypropyl Methyl Cellulose (HPMC)
Hydroxypropyl methyl cellulose, nolofatsa propyl methyl cellulose (HPMC hydroxypropylmethylcellulose, khutsufatso), e lokela ho ba karolo ea mefuta e fapaneng e tsoakiloeng e seng ea ionic cellulose ether. Ke semi-synthetic, e sa sebetseng, viscoelastic polymer e atisang ho sebelisoa ho ophthalmology e le setlolo, kapa e le se thusang kapa se thusang meriana e nooang, e fumanehang hangata mefuteng e mengata e fapaneng ea lihlahisoa. Hydroxypropyl cellulose e ka sebelisoa e le tlatsetso ea lijo, emulsifier, thickener, suspension agent le sebaka sa gelatin ea liphoofolo.
LINTLHA LIEKETSENG TS'OANELO Ponahalo Phofo e Tshweu Decomposition Temperature 200min Discoloration Mocheso 190-200 ℃ Viscosity 400 PH Boleng 5-8 Botenya 1.39g/cm3 Mocheso oa carbonization 280-300 ℃ Mofuta Boemo ba lijo Litaba 99% Ho tsitsinyeha ha bokahodimo 42-56dyne / cm bakeng sa tharollo ea 2% ea metsi -
Hydroxypropyl Methylcellulose (MHPC)
Hydroxypropyl methylcellulose (MHPC) ha li na monko, ha li na tatso, ha li na chefo ea cellulose ethers tse bileng le lihlopha tsa hyrdroxyl ka ketane ea cellulose e nketsoeng sebaka ke sehlopha sa methoxy kapa hydroxypropyl se nang le ho qhibiliha ha metsi hantle. HPMC F60S ke boemo bo phahameng ba viscosity e sebelisoang e le sekontiri se teteaneng, se tlamang, le filimi ea pele ho lik'hemik'hale tsa temo, lijalo, lirafshoa, likhomaretsi, li-inks le lisebelisoa tse ling tse fapaneng.
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Hydroxyethyl Cellulose (HEC)
Hydroxyethyl Cellulose(HEC) ke polima e sa ionic, e qhibilihang ka metsing e entsoeng ka selulose ka mekhoa e mengata ea lik'hemik'hale le tsa 'mele. viscous gel solution.Ha pH ka tharollo ea 2 ho ea ho 12, tharollo e tsitsitse haholo.Kaha sehlopha sa HEC ke nonionic e le 'ngoe ka tharollo ea metsi, e ke ke ea itšoara ka li-anion tse ling kapa li-cations le ho se tsotelle matsoai.
Empa molek'hule ea HEC e khona ho hlahisa esterification,etherification, kahoo hoa khoneha ho etsa hore e se ke ea qhibiliha ka metsing kapa ho ntlafatsa thepa ea eona.HEC e boetse e na le bokhoni bo botle ba ho etsa filimi le mosebetsi oa holim'a metsi.
