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 ts'ebeliso e atileng liindastering tse fapaneng.Le hoja botsitso ba pH ea eona hangata bo le matla ho feta mefuta e mengata e fapaneng, pH e feteletseng e 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