Hydroxyethyl cellulose (HEC) ke polymer e seng ionic, e qhibilihang ka metsing e nkiloeng ho cellulose, polymer e hlahang ka tlhaho e fumanehang maboteng a sele a limela. E sebelisoa haholo liindastering tse fapaneng tse kang meriana, litlolo, lipente, likhomaretsi le lihlahisoa tsa lijo ka lebaka la thepa ea eona e ikhethang joalo ka bokhoni ba ho teteana, 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 ts'ebeliso.
Ho Utloisisa Hydroxyethyl Cellulose (HEC):
1. Sebopeho sa Lik'hemik'hale:
HEC e hlahisoa ke karabelo ea cellulose le ethylene oxide, e leng se fellang ka ho hlahisoa ha lihlopha tsa hydroxyethyl (-CH2CH2OH) mokokotlong oa cellulose.
Tekanyo ea phetolo (DS) e bolela palo e tloaelehileng ea lihlopha tsa hydroxyethyl ka yuniti ea glucose ka har'a ketane ea cellulose 'me e khetholla litšobotsi tsa HEC. Litekanyetso tse phahameng tsa DS li lebisa ho qhibiliheng ha metsi le ho theoha ha viscosity.
2. Thepa:
HEC e qhibiliha ka metsing 'me e etsa litharollo tse hlakileng, e leng se etsang hore e lokele lits'ebetso tse fapaneng tse hlokang mekhoa e bonaletsang.
E bontša boitšoaro ba pseudoplastic, ho bolelang hore viscosity ea eona e fokotseha tlas'a khatello ea ho shear, e leng se lumellang hore ho be bonolo ho e sebelisa le ho e sebetsana.
Ho teteana ha ditharollo tsa HEC ho susumetswa ke mabaka a kang mahloriso, mocheso, pH, le boteng ba matswai kapa di-additives tse ding.
3. Litšebeliso:
Meriana: HEC e sebelisoa e le setefatsi le sehatsetsi mefuteng ea meriana e nooang le e sebelisoang ka ntle joalo ka mafura, litlolo le li-suspension.
Litlolo: Ke motsoako o tloaelehileng lihlahisoa tsa tlhokomelo ea botho ho kenyeletsoa le shampoo, litlolo le litlolo ka lebaka la thepa ea eona ea ho tenya le ho etsa emulsifying.
Dipente le Dikobo: HEC e eketsoa ho dipente, dikobo le dikhomaretsi ho laola ho teteana, ho ntlafatsa thepa ya phallo, le ho ntlafatsa ho thehwa ha filimi.
Indasteri ea Lijo: Lihlahisoa tsa lijo, HEC e sebetsa e le setenya, se tsitsitseng le se kopanyang lintho tse kang lisoso, liaparo le lihlahisoa tsa lebese.
Boleng ba pH ba Hydroxyethyl Cellulose (HEC):
1. Ho itshetleha 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 holim'a mefuta e mengata ea pH, hangata e 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. Litlamorao tsa pH holim'a ho teteana:
Ho teteana ha ditharollo tsa HEC ho ka itshetleha ka pH, haholoholo maemong a pH a hodimo kapa a tlase.
Haufi le mefuta e sa nke lehlakore ea pH (pH 5-8), litharollo tsa HEC hangata li bontša ho teteana ha tsona ho hoholo.
Ha pH e le tlase haholo kapa e le holimo, mokokotlo oa cellulose o ka 'na oa feta hydrolysis, e leng se fellang ka ho fokotseha ha viscosity le botsitso.
3. Phetoho ea pH:
Mefuteng eo ho yona ho hlokahalang tokiso ya pH, hangata di-buffer di sebediswa ho boloka mefuta e lakatsehang ya pH.
Li-buffer tse tloaelehileng tse kang li-buffer tsa citrate kapa phosphate lia lumellana le HEC 'me li thusa ho tsitsisa thepa ea eona ka har'a mefuta e itseng ea pH.
4. Mehopolo ea Ts'ebeliso:
Bahlahisi ba tlameha ho nahana ka ho lumellana ha pH ea HEC le metsoako e meng e ka har'a motsoako.
Maemong a mang, ho ka hlokahala diphetoho ho pH ya sebopeho ho ntlafatsa tshebetso ya HEC.
Hydroxyethyl cellulose (HEC) ke polymer e feto-fetohang e nang le lits'ebetso tse pharaletseng liindastering tse fapaneng. Le ha botsitso ba pH ea eona ka kakaretso bo tiile ka mefuta e mengata, maemo a feteletseng a pH a ka ama ts'ebetso le botsitso ba eona. Ho utloisisa ho itšetleha ka pH ea HEC ho bohlokoa bakeng sa ho etsa lihlahisoa tse sebetsang hantle le tse tsitsitseng merianeng, litlolong, penteng, likhomaretsing le lihlahisoa tsa lijo. Ka ho nahana ka ho lumellana ha pH le ho sebelisa maano a nepahetseng a ho etsa, HEC e ka tsoela pele ho sebetsa e le motsoako oa bohlokoa lits'ebetsong tse fapaneng.
Nako ea poso: Mmesa-15-2024