HPMC ke cellulose e hloekileng haholo ea k'hothone e le lisebelisoa tse tala, tlas'a maemo a alkaline ka etherification e khethehileng le ho lokisetsa.HpMC e fokotseha ka ho fokotseha ha methoxide content, ho eketseha ha gel point, ho fokotseha ha metsi le ho fokotseha ha mosebetsi oa holim'a metsi.
HPMC e na le bokhoni bo matla, ho hanyetsa letsoai, phofo e tlaase ea molora, botsitso ba pH, ho boloka metsi, botsitso ba mahlakoreng, ho etsa filimi e babatsehang, le mefuta e mengata ea ho hanyetsa enzyme, ho hasana le ho khomarela.
HPMC, Hydroxypropyl Methylcellulose mefuta ea non-ionic cellulose ether, e leng phofo e tšoeu ho tloha 'mala o mosoeu, e sebetsang e le thickener, binder, film-former, surfactant, protective colloid, lubricant, emulsifier le suspension le thuso ea ho boloka metsi. Ho feta moo, ho na le mefuta ea li-cellulose ethers e bonts'a thepa ea gelation ea mocheso, ho se sebetse ha metabolism, ho hanyetsa enzyme, monko o fokolang le tatso, le botsitso ba PH.
Ka lebaka la thepa e ngata, HPMC e atisa ho sebelisoa ho kenya li-additives tse ling tse ngata tse nang le khatello e tlaase, ho etsa hore HPMC e be tlatsetso e sebetsang hantle haholo sebakeng sa likhomaretsi, kaho, lijo, lihlahisoa tsa ntlo, meriana le tse ling.
| Lebitso la sehlahisoa | HPMC | ||
| litaba tsa methoxy | 28.0-30.0 27.0-30.0 19.0-24.0 | ||
| litaba tsa hydroxypropyl | 7.0-12.0 4.0-7.5 4.0-12.0 | ||
| mocheso oa gelation | 58-64 62-68 70-90 | ||
| mongobo | ≤5% | ||
| Molora | ≤1% | ||
| PH Boleng | 4-8 | ||
| Ponahalo | Whie phofo | ||
| Boikoetliso | 80-100 lethathamo | ||
| Viscosity | 300-200,000 E ka etsoa ka mokhoa o ikhethileng | ||
| Re HPMC increased with methoxy content reduce, the gel point water solubility and surface activity also declined. Depends on customers’ situation | |||
Nako ea poso: Mar-15-2021