Hydroxyethyl Cellulose (HEC) ke polymer e sa qhibiliheng metsing e sa ionic e sebelisoang haholo ho penteng, litlolong, meriana, lijong, ho etsa pampiri, ho cheka oli le masimong a mang a indasteri. Ke motsoako oa ether oa cellulose o fumanoang ka ho etherification ea cellulose, moo hydroxyethyl e nkang sebaka sa karolo ea lihlopha tsa hydroxyl tsa cellulose. Thepa ea 'mele le ea lik'hemik'hale ea hydroxyethyl cellulose e etsa hore e be e' ngoe ea likarolo tsa bohlokoa tsa li-thickeners, li-gelling agents, li-emulsifiers le li-stabilizers.
Sebaka sa ho belisa sa hydroxyethyl cellulose
Hydroxyethyl cellulose ke polymer e phahameng ea limolek'hule e nang le boima bo boholo ba limolek'hule, 'me ntlha ea eona e itseng ea ho belisa ha e bonolo ho e khetholla joalo ka ea metsoako e menyenyane ea limolek'hule. Litšebelisong tse sebetsang, thepa e phahameng ea limolek'hule joalo ka hydroxyethyl cellulose ha e na ntlha e hlakileng ea ho belisa. Lebaka ke hore lintho tse joalo li tla bola nakong ea ho futhumatsa, ho e-na le ho fetoha ka kotloloho ho tloha mokelikeli ho ea khaseng ka phetoho ea mekhahlelo joalo ka lintho tse nyane tse tloaelehileng tsa limolek'hule. Ka hona, mohopolo oa "ntlha ea ho belisa" ea hydroxyethyl cellulose ha o sebetse.
Ka kakaretso, ha hydroxyethyl cellulose e futhumatsoa mochesong o phahameng, e tla qala ka ho qhibiliha ka metsing kapa ka har'a solvent ea tlhaho ho etsa tharollo ea colloidal, ebe mochesong o phahameng, ketane ea polymer e tla qala ho robeha 'me qetellong e bola ka mocheso, e lokolle limolek'hule tse nyane tse kang metsi, carbon dioxide le lintho tse ling tse feto-fetohang ntle le ho feta ts'ebetsong e tloaelehileng ea ho belisa. Ka hona, hydroxyethyl cellulose ha e na ntlha e hlakileng ea ho belisa, empa e na le mocheso oa ho bola, o fapanang le boima ba eona ba limolek'hule le tekanyo ea ho nkeloa sebaka. Ka kakaretso, mocheso oa ho bola ha hydroxyethyl cellulose hangata o kaholimo ho 200°C.
Ho tsitsa ha hydroxyethyl cellulose ka mocheso
Hydroxyethyl cellulose e na le botsitso bo botle ba lik'hemik'hale mochesong oa kamore, e ka mamella mefuta e itseng ea tikoloho ea asiti le alkali, 'me e na le khanyetso e itseng ea mocheso. Leha ho le joalo, ha mocheso o le holimo haholo, haholo-holo ha ho se na li-solvent kapa li-stabilizer tse ling, liketane tsa polymer li tla qala ho robeha ka lebaka la ketso ea mocheso. Ts'ebetso ena ea ho bola ha mocheso ha e tsamaisane le ho belisa ho totobetseng, empa ho e-na le hoo ketane e robehang butle-butle le karabelo ea ho felloa ke metsi 'meleng, e lokollang lintho tse feto-fetohang 'me qetellong e tlohe lihlahisoa tse nang le carbon.
Litšebelisong tsa indasteri, e le ho qoba ho bola ho bakoang ke mocheso o phahameng, hydroxyethyl cellulose hangata ha e pepesehele tikoloho e fetang mocheso oa eona oa ho bola. Esita le lits'ebetsong tsa mocheso o phahameng (joalo ka tšebeliso ea maro a ho cheka oli), hydroxyethyl cellulose hangata e sebelisoa hammoho le lisebelisoa tse ling ho ntlafatsa botsitso ba eona ba mocheso.
Tšebeliso ea hydroxyethyl cellulose
Leha hydroxyethyl cellulose e se na ntlha e hlakileng ea ho belisa, ho qhibiliha ha eona le thepa ea eona ea ho teteana li etsa hore e sebelisoe haholo liindastering tse ngata. Mohlala:
Indasteri ea ho koahela: hydroxyethyl cellulose e ka sebelisoa e le setenya ho thusa ho lokisa rheology ea sekoahelo, ho thibela pula le ho ntlafatsa ho leka-lekana le botsitso ba sekoahelo.
Litlolo le lik'hemik'hale tsa letsatsi le letsatsi: Ke motsoako oa bohlokoa lisepeng tse ngata tsa sesepa, lihlahisoa tsa tlhokomelo ea letlalo, li-shampoo le lisepa tsa meno, tse ka fang sehlahisoa se tiileng, se nolofatsang le se tsitsitseng.
Indasteri ea meriana: Litokisetsong tsa meriana, hydroxyethyl cellulose hangata e sebelisoa tlhahisong ea matlapa a lokolloang ka nako e telele le lipente ho laola sekhahla sa ho lokolloa ha meriana.
Indasteri ea lijo: Joaloka setei sa ho tenya, ho tsitsisa le ho kopanya, hydroxyethyl cellulose e boetse e sebelisoa lijong, haholo-holo ho ice cream, jelly le lisoso.
Ho tjheka oli: Ha ho tjhekwa oli, hydroxyethyl cellulose ke karolo ya bohlokwa ya mokelikeli wa ho tjheka, e ka eketsang ho teteana ha mokelikeli, ya tsitsisa lebota la seliba le ho fokotsa tahlehelo ya seretse.
Jwalo ka thepa ya polymer, hydroxyethyl cellulose ha e na ntlha e hlakileng ya ho belisa hobane e bola mochesong o phahameng ho ena le ketsahalo e tlwaelehileng ya ho belisa. Mocheso wa yona wa ho bola ha mocheso hangata o ka hodimo ho 200°C, ho itshetlehile ka boima ba yona ba dimolek'hule le tekanyo ya ho nkeloa sebaka. Leha ho le jwalo, hydroxyethyl cellulose e sebediswa haholo ho dikoahelong, ditlolong, merianeng, dijong le peteroleng ka lebaka la bokgoni ba yona bo botle ba ho teteana, ho etsa gelling, ho emulsifying le ho tsitsisa. Ditshebedisong tsena, hangata e qojwa ho pepesehela mocheso o phahameng haholo ho netefatsa tshebetso le botsitso ba yona.
Nako ea poso: Mphalane-23-2024