Carboxymethyl Cellulose (CMC) ke eng?

Carboxymethyl cellulose (CMC) ke polima e qhibilihang ka metsi e tsoang ho selulose, e leng polymer e ngata ka ho fetisisa lefatšeng. CMC e hlahisoa ke phetoho ea lik'hemik'hale ea selulose, hangata ho tloha ho makhasi a lehong kapa lithareng tsa k'hothone. E sebelisoa haholo mefuteng e mengata ea ts'ebeliso ka lebaka la thepa ea eona e ikhethang, ho kenyelletsa le bokhoni ba eona ba ho etsa litharollo tsa viscous le li-gel, bokhoni ba eona ba ho kopanya metsi, le ho senyeha ha eona.

Sebopeho le Tlhahiso ea Lik'hemik'hale
Sebopeho sa lik'hemik'hale sa CMC se na le mokokotlo oa cellulose o nang le lihlopha tsa carboxymethyl (-CH2-COOH) tse khomaretsoeng ho tse ling tsa lihlopha tsa hydroxyl (-OH) ho li-glucose monomers. Mokhoa ona oa ho nka sebaka o kenyelletsa ho phekola cellulose ka chloroacetic acid ka har'a alkaline, e lebisang ho thehoeng ha sodium carboxymethyl cellulose. The degree of substitution (DS) e bolela palo e tloaelehileng ea lihlopha tsa hydroxyl ka yuniti ea tsoekere e nketsoeng sebaka ke lihlopha tsa carboxymethyl, 'me DS ea 0.4 ho isa ho 1.4 e tloaelehile lits'ebetsong tse ngata.

Ts'ebetso ea tlhahiso ea CMC e kenyelletsa mehato e mengata:

Alkalization: Cellulose e tšoaroa ka setsi se matla, hangata sodium hydroxide, ho etsa alkali cellulose.
Etherification: Alkali cellulose ebe e sebelisoa ka chloroacetic acid, e bakang hore lihlopha tsa hydroxyl li nkeloe sebaka ke lihlopha tsa carboxymethyl.
Tlhoekiso: CMC e tala ea hlatsuoa le ho hloekisoa ho tlosa lihlahisoa le li-reagents tse feteletseng.
Ho omisa le ho sila: CMC e hloekisitsoeng ea omisoa le ho siloa ho fumana boholo bo lakatsehang.
Thepa

CMC e tsebahala ka thepa ea eona e ikhethang, e etsang hore e be molemo liindastering tse fapaneng:

Sollubility ea Metsi: CMC e qhibiliha habonolo ka metsing, e etsa litharollo tse hlakileng, tse hlakileng.
Viscosity Modulation: The viscosity ea tharollo ea CMC e ka fetoloa ka ho fetola mahloriso le boima ba limolek'hule, ho etsa hore e be molemo bakeng sa ho tiisa le ho tsitsisa.
Tlhahiso ea Lifilimi: E ka etsa lifilimi tse matla, tse tenyetsehang ha li omisitsoe ka tharollo.
Thepa ea Sekhomaretsi: CMC e bonts'a litšobotsi tse ntle tsa sekhomaretsi, tse molemo lits'ebetsong tse joalo ka likhomaretsi le lirafshoa.
Biodegradability: Kaha e nkiloe ho selulose ea tlhaho, CMC e khona ho senyeha, ho e etsa hore e boloke tikoloho.

Indasteri ea Lijo
CMC e sebelisoa haholo e le tlatsetso ea lijo (E466) ka lebaka la bokhoni ba eona ba ho fetola viscosity le ho tsitsisa li-emulsion lihlahisoa tse fapaneng tsa lijo. E sebetsa joalo ka setepi, se tsitsisa, le emulsifier lihlahisoa tse kang ice cream, lihlahisoa tsa lebese, lintho tsa ho baka le liaparo tsa salate. Ka mohlala, ka ice cream, CMC e thusa ho thibela ho thehoa ha likristale tsa leqhoa, e leng se etsang hore ho be le sebopeho se boreleli.

Meriana le Litlolo
Indastering ea meriana, CMC e sebelisoa e le setlamo sa matlapa, sehlaseli, le se ntlafatsang viscosity ho suspensions le li-emulsions. E boetse e sebetsa joalo ka mokhoa oa ho tsitsisa litlolo, litlolo le li-gel indastering ea litlolo. Sebopeho sa eona se se nang chefo le se sa halefisang se etsa hore se loketse ho sebelisoa lihlahisoa tsena.

Pampiri le Textile
CMC e hiriloe indastering ea lipampiri joalo ka moemeli oa boholo ho ntlafatsa matla le ho hatisoa ha pampiri. Ka masela, e sebelisoa e le sesebelisoa se teteaneng lits'ebetsong tsa ho daea hape e le karolo ea masela a khatiso ea masela, e matlafatsang ho ts'oana le boleng ba likhatiso.

Lisebelisoa tsa ho hlatsoa le ho hloekisa
Ka li-detergents, CMC e sebetsa e le ntho e emisang mobu, e thibelang litšila ho khutlela masela nakong ea ho hlatsoa. E boetse e ntlafatsa ts'ebetso ea li-detergents tsa metsi ka ho ntlafatsa viscosity ea tsona le botsitso.

Ho Cheka Oli le Morafo
CMC e sebelisoa ka maro a ho cheka oli ho laola viscosity le e le mofetoleli oa rheology ho boloka botsitso ba seretse sa ho cheka, ho thibela ho putlama ha mekoti le ho thusa ho tlosoa ha likheo. Merafong, e sebelisoa e le moemeli oa flotation le flocculant.

Kaho le Ceramics
Indastering ea kaho, CMC e sebelisoa ho etsa samente le seretse ho ntlafatsa ho boloka metsi le ho sebetsa. Ka li-ceramics, e sebetsa joalo ka setlamo le polasetiki ka li-paste tsa ceramic, e ntlafatsang thepa ea tsona ea ho bopa le ho omisa.

Mehopolo ea Tikoloho le Polokeho
CMC ka kakaretso e nkuoa e bolokehile (GRAS) ke balaoli ba taolo joalo ka FDA. Ha e na chefo, ha e na allergenic, 'me e ka senyeha, e etsa hore e boloke tikoloho. Leha ho le joalo, ts'ebetso ea tlhahiso e kenyelletsa lik'hemik'hale tse lokelang ho sebetsoa ka hloko ho thibela tšilafalo ea tikoloho. Ho lahloa le ho tšoara litšila ka nepo ho bohlokoa ho fokotsa tšusumetso ea tikoloho.

Litlhahiso le Litsela Tsa Bokamoso
Lintlafatso tsa morao-rao lefapheng la CMC li kenyelletsa nts'etsopele ea CMC e ntlafalitsoeng e nang le thepa e ntlafalitsoeng bakeng sa lits'ebetso tse ikhethileng. Mohlala, CMC e nang le boima ba limolek'hule le tekanyo ea phetoho e ka fana ka ts'ebetso e ntlafalitsoeng lits'ebetsong tsa phano ea lithethefatsi kapa joalo ka lisebelisoa tsa ho paka tse thehiloeng ho bio. Ho feta moo, lipatlisiso tse ntseng li tsoela pele li ntse li hlahloba tšebeliso ea CMC libakeng tse ncha tse kang boenjineri ba lithane le bioprinting, moo bokhoni ba eona ba biocompatibility le ho etsa li-gel bo ka bang molemo haholo.

Carboxymethyl cellulose ke sesebelisoa se feto-fetohang le sa bohlokoa se nang le mefuta e mengata ea ts'ebeliso ho liindasteri tse fapaneng. Thepa ea eona e ikhethang, ho kenyelletsa ho qhibiliha ha metsi, ho feto-fetoha ha viscosity, le biodegradability, e etsa hore e be motsoako oa bohlokoa lihlahisoa tse ngata. Ka tsoelo-pele e tsoelang pele tlhahisong le ntlafatsong ea eona, CMC e mothating oa ho bapala karolo ea bohlokoa le ho feta mafapheng a setso le a ntseng a hlaha, ho kenya letsoho tsoelopeleng ea theknoloji le boitekong ba ts'ebetso.