Carboxymethyl cellulose (CMC) le sodium carboxymethyl cellulose (CMC-Na) ke metsoako e tloaelehileng indastering ea lik'hemik'hale le indastering ea lijo. Li na le liphapang le likhokahano tse itseng sebopehong, ts'ebetsong le ts'ebelisong. Sengoliloeng sena se tla sekaseka ka botlalo thepa, mekhoa ea ho itokisa, ts'ebeliso le bohlokoa ba tse peli mafapheng a fapaneng.
(1) Carboxymethyl cellulose (CMC)
1. Thepa ea motheo
Carboxymethyl cellulose (CMC) ke motsoako oa carboxymethylated oa cellulose mme ke anionic linear polysaccharide. Sebopeho sa eona sa motheo ke hore lihlopha tse ling tsa hydroxyl (-OH) ka molek'hule ea selulose li nkeloa sebaka ke lihlopha tsa carboxymethyl (-CH₂-COOH), kahoo li fetola ho qhibiliha le ho sebetsa ha selulose. CMC ka kakaretso e tšoeu ho isa ho phofo e tšehla hanyenyane, ha e na monko ebile ha e latsoehe, ha e qhibilihe ka har'a metsoako ea lintho tse phelang, empa e ka monya metsi ho etsa gel.
2. Mokhoa oa ho itokisa
Tokisetso ea CMC hangata e kenyelletsa mehato e latelang:
Alkalinization reaction: Kopanya cellulose le sodium hydroxide (NaOH) ho fetolela lihlopha tsa hydroxyl ka selulose hore e be matsoai a alkaline.
Etherification reaction: Alkaized cellulose e kopana le chloroacetic acid (ClCH₂COOH) ho hlahisa carboxymethyl cellulose le sodium chloride (NaCl).
Ts'ebetso ena hangata e etsoa ka tharollo ea metsi kapa ea ethanol, 'me mocheso oa karabelo o laoloa pakeng tsa 60 ℃-80 ℃. Kamora hore karabelo e phetheloe, sehlahisoa sa ho qetela sa CMC se fumanoa ka ho hlatsoa, ho sefa, ho omisa le mehato e meng.
3. Libaka tsa kopo
CMC e sebelisoa haholo indastering ea lijo, meriana, masela, ho etsa pampiri le masimo a mang. E na le mesebetsi e mengata e kang ho teteka, ho tsitsisa, ho boloka metsi le ho etsa filimi. Ka mohlala, indastering ea lijo, CMC e ka sebelisoa e le motenya, stabilizer le emulsifier bakeng sa ice cream, jeme, yogurt le lihlahisoa tse ling; lefapheng la meriana, CMC e sebelisoa e le setlamo, setenya le se tsitsitseng bakeng sa lithethefatsi; indastering ea masela le ea ho etsa pampiri, CMC e sebelisoa e le sehlahisoa sa slurry le ho etsa boholo ba bokaholimo ho ntlafatsa boleng le botsitso ba sehlahisoa.
(2) Sodium carboxymethyl cellulose (CMC-Na)
1. Thepa ea motheo
Sodium carboxymethyl cellulose (CMC-Na) ke mofuta oa letsoai oa sodium oa carboxymethyl cellulose. Ha e bapisoa le CMC, CMC-Na e na le ho qhibiliha ha metsi ho betere. Sebopeho sa eona sa mantlha ke hore lihlopha tsa carboxylmethyl ho CMC li fetoloa ka mokhoa o itseng kapa ka botlalo ho ba letsoai la sodium, ke hore, liathomo tsa haedrojene lihlopheng tsa carboxylmethyl li nkeloa sebaka ke li-ion tsa sodium (Na⁺). CMC-Na hangata ke phofo e tšoeu kapa e mosehla hanyenyane kapa granules, e qhibilihang habonolo metsing, 'me e etsa tharollo e hlakileng ea viscous.
2. Mokhoa oa ho itokisa
Mokhoa oa ho lokisa oa CMC-Na o ts'oana le oa CMC, mme mehato ea mantlha e kenyelletsa:
Karabelo ea alkalinization: selulose e sebelisoa ka sodium hydroxide (NaOH).
Karabelo ea Etherification: Alkaized cellulose e sebetsa ka chloroacetic acid (ClCH₂COOH) ho hlahisa CMC.
Karabelo ea sodiumization: CMC e fetoloa sebopeho sa eona sa letsoai sa sodium ka karabelo ea ho se nke lehlakore ka tharollo ea metsi.
Ts'ebetsong ena, hoa hlokahala ho ela hloko ho laola maemo a karabelo, joalo ka pH le mocheso, ho fumana lihlahisoa tsa CMC-Na tse nang le ts'ebetso e nepahetseng.
3. Libaka tsa kopo
Libaka tsa ts'ebeliso ea CMC-Na li pharalletse haholo, li akaretsa liindasteri tse ngata joalo ka lijo, meriana, lik'hemik'hale tsa letsatsi le letsatsi le peterole. Indastering ea lijo, CMC-Na ke motenya oa bohlokoa, stabilizer le emulsifier, 'me e sebelisoa haholo lihlahisoa tsa lebese, lero, li-condiments, joalo-joalo. Lefapheng la meriana, CMC-Na e sebelisoa e le sekhomaretsi, gel le lubricant bakeng sa matlapa. . Indasteri ea letsatsi le letsatsi ea lik'hemik'hale, CMC-Na e sebelisoa lihlahisoa tse kang sesepa sa meno, shampoo, le conditioner, 'me e na le liphello tse ntle tsa ho tiisa le ho tsitsisa. Ho phaella moo, ha ho cheka oli, CMC-Na e sebelisoa e le molaoli o teteaneng le oa rheology bakeng sa ho cheka seretse, se ka ntlafatsang metsi le botsitso ba seretse.
(3) Phapang le kamano pakeng tsa CMC le CMC-Na
1. Sebopeho le thepa
Phapang e kholo lipakeng tsa CMC le CMC-Na ka sebopeho sa limolek'hule ke hore sehlopha sa carboxylmethyl sa CMC-Na se teng ka mokhoa o sa fellang kapa ka botlalo ka sebopeho sa letsoai la sodium. Phapang ena ea sebopeho e etsa hore CMC-Na e bonts'e ho qhibiliha ho holimo le botsitso bo betere metsing. CMC hangata ke carboxymethylated cellulose, athe CMC-Na ke mofuta oa letsoai oa sodium oa carboxymethyl cellulose ena.
2. Solubility le Tšebeliso
CMC e na le solubility e itseng metsing, empa CMC-Na e na le ho qhibiliha ho molemo 'me e ka etsa tharollo e tsitsitseng ea viscous metsing. Ka lebaka la ho qhibiliha ha metsi ho betere le litšobotsi tsa ionization, CMC-Na e bonts'a ts'ebetso e ntle ho feta CMC lits'ebetsong tse ngata. Mohlala, indastering ea lijo, CMC-Na e sebelisoa haholo joalo ka motenya le botsitso ka lebaka la ho qhibiliha ha eona hantle ha metsi le viscosity e phahameng, athe CMC e sebelisoa hangata lits'ebetsong tse sa hlokeng ho qhibiliha ha metsi haholo.
3. Mokhoa oa ho itokisa
Leha lits'ebetso tsa litokiso tsa tsena tse peli li batla li tšoana, sehlahisoa sa ho qetela sa tlhahiso ea CMC ke carboxymethyl cellulose, ha CMC-Na e ntse e fetolela carboxymethyl cellulose hore e be sebopeho sa eona sa letsoai sa sodium ka karabelo ea ho se nke lehlakore nakong ea ts'ebetso ea tlhahiso. Phetoho ena e fa CMC-Na ts'ebetso e ntlafetseng lits'ebetsong tse ling tse khethehileng, joalo ka ts'ebetso e ntlafetseng lits'ebetsong tse hlokang ho qhibiliha ha metsi le botsitso ba electrolyte.
Carboxymethyl cellulose (CMC) le sodium carboxymethyl cellulose (CMC-Na) ke lintho tse peli tse nkiloeng ho cellulose tse nang le boleng ba bohlokoa ba indasteri. Le hoja li tšoana ka sebopeho, CMC-Na e bontša ho qhibiliha ha metsi ho phahameng le botsitso ka lebaka la ho sokoloha ha lihlopha tse ling kapa tsohle tsa carboxyl ho CMC-Na hore e be letsoai la sodium. Phapang ena e etsa hore CMC le CMC-Na li be le melemo le mesebetsi e ikhethang lits'ebetsong tse fapaneng tsa indasteri. Ho utloisisa le ho sebelisa lintho tsena tse peli ka nepo ho ka thusa ho ntlafatsa ts'ebetso ea sehlahisoa le ho ntlafatsa katleho ea tlhahiso mafapheng a mangata joalo ka indasteri ea lijo, meriana le lik'hemik'hale.
Nako ea poso: Jun-17-2024