Hydroxyethyl cellulose (HEC) ke polima e se nang ionic, e qhibilihang ka metsing e tsoang ho selulose, polima ea tlhaho e fumanehang maboteng a lisele tsa limela. E sebelisoa haholo liindastering tse fapaneng tse kang tsa meriana, litlolo, lipente, likhomaretsi le lihlahisoa tsa lijo ka lebaka la thepa ea eona e ikhethang joalo ka ho tenya, ho tsitsisa le ho boloka metsi. Leha ho le joalo, ho buisana ka boleng ba pH ba HEC ho hloka kutloisiso e batsi ea thepa ea eona, sebopeho le lits'ebetso.
Ho utloisisa Cellulose ea Hydroxyethyl (HEC):
1. Sebopeho sa Lik'hemik'hale:
HEC e entsoe ka karabelo ea cellulose e nang le ethylene oxide, e leng se fellang ka ho kenngoa ha lihlopha tsa hydroxyethyl (-CH2CH2OH) holim'a mokokotlo oa cellulose.
The degree of substitution (DS) e bolela palo e tloaelehileng ea lihlopha tsa hydroxyethyl ka yuniti ea tsoekere ka har'a ketane ea selulose 'me e lekanya litšobotsi tsa HEC. Litekanyetso tse phahameng tsa DS li etsa hore ho be le ho qhibiliha ha metsi ho eketsehileng le ho fokotseha ha viscosity.
2. Thepa:
HEC e qhibiliha ka metsing 'me e etsa litharollo tse hlakileng, e leng se etsang hore e tšoanelehe bakeng sa lisebelisoa tse sa tšoaneng tse hlokang libopeho tse hlakileng.
E bonts'a boitšoaro ba pseudoplastic, ho bolelang hore viscosity ea eona e fokotseha tlas'a khatello ea ho kuta, e lumellang hore ho sebelisoe habonolo le ho sebetsana le eona.
The viscosity ea tharollo ea HEC e susumetsoa ke lintlha tse kang ho tsepamisa mohopolo, mocheso, pH, le boteng ba letsoai kapa li-additives tse ling.
3. Likopo:
Meriana ea Meriana: HEC e sebelisoa e le motenya le stabilizer mefuteng ea meriana ea molomo le ea lihlooho tse kang litlolo, litlolo, le li-suspensions.
Litlolo: Ke motsoako o tloaelehileng lihlahisoa tsa tlhokomelo ea motho ho kenyelletsa li-shampoo, litlolo, le litlolo ka lebaka la ho tenya le ho etsa emulsifying.
Lipente le Liaparo: HEC e kenngoa ho lipente, liphahlo, le li-adhesives ho laola viscosity, ho ntlafatsa thepa ea phallo, le ho ntlafatsa sebopeho sa lifilimi.
Indasteri ea Lijo: Lihlahisoang tsa lijo, HEC e sebetsa e le setepi, se tsitsisa, le emulsifier linthong tse kang li-sauces, li-dressings le lihlahisoa tsa lebese.
PH Boleng ba Hydroxyethyl Cellulose (HEC):
1. Ho itšetleha ka pH:
PH ea tharollo e nang le HEC e ka susumetsa boitšoaro le ts'ebetso ea eona lits'ebetsong tse fapaneng.
Ka kakaretso, HEC e tsitsitse ho feta pH e pharaletseng, hangata pakeng tsa pH 2 le pH 12. Leha ho le joalo, maemo a feteletseng a pH a ka ama thepa ea eona le botsitso.
2. pH Liphello ho Viscosity:
Viscosity ea tharollo ea HEC e ka itšetleha ka pH, haholo-holo maemong a phahameng kapa a tlase a pH.
Haufi le sebaka se sa nke lehlakore sa pH (pH 5-8), litharollo tsa HEC hangata li bonts'a viscosity ea tsona e phahameng.
Ka litekanyetso tse tlase haholo kapa tse phahameng tsa pH, mokokotlo oa selulose o ka 'na oa e-ba le hydrolysis, e leng se bakang ho fokotseha ha viscosity le botsitso.
3. Phetoho ea pH:
Meetsong moo tokiso ea pH e hlokahalang, li-buffers hangata li sebelisoa ho boloka pH e batloang.
Li-buffers tse tloaelehileng tse kang citrate kapa phosphate buffers li lumellana le HEC 'me li thusa ho tsitsisa thepa ea eona ka har'a mefuta e itseng ea pH.
4. Maikutlo a Tšebeliso:
Baetsi ba lihlahisoa ba tlameha ho nahana ka ho lumellana ha pH ea HEC le lisebelisoa tse ling ha ho etsoa.
Maemong a mang, ho ka 'na ha hlokahala hore ho lokisoe pH ea sebopeho ho ntlafatsa tshebetso ea HEC.
Hydroxyethyl cellulose (HEC) ke polymer e sebetsang ka mokhoa o fapaneng e nang le lits'ebetso tse atileng liindastering tse fapaneng. Le hoja botsitso ba pH ea eona hangata bo le matla ho feta mefuta e mengata, ho feteletseng ha pH ho ka ama ts'ebetso ea eona le botsitso. Ho utloisisa ho itšetleha ka pH ea HEC ho bohlokoa bakeng sa ho etsa lihlahisoa tse sebetsang hantle le tse tsitsitseng meriana, litlolo, lipente, li-adhesives le lihlahisoa tsa lijo. Ka ho nahana ka ho lumellana ha pH le ho sebelisa mekhoa e nepahetseng ea ho theha, HEC e ka tsoela pele ho sebetsa e le motsoako oa bohlokoa mefuteng e sa tšoaneng ea likopo.
Nako ea poso: Apr-15-2024