Carboxymethyl cellulose (sodium carboxyme thyl cellulose, CMC) ke motsoako oa carboxymethylated oa cellulose, eo hape e tsejoang e le marenene a cellulose, 'me ke chese ea bohlokoahali ea ionic cellulose.
CMC hangata ke motsoako oa anionic polymer o lokiselitsoeng ka ho arabela selulose ea tlhaho ka caustic alkali le monochloroacetic acid.Boima ba limolek'hule tsa motsoako ona bo fapana ho tloha ho likete tse 'maloa ho isa ho milione.
CMC ke ea phetoho ea cellulose ea tlhaho, 'me Mokhatlo oa Lijo le Temo oa Machaba a Kopaneng (FAO) le Mokhatlo oa Lefatše oa Bophelo (WHO) li e bitsitse ka molao "selulose e fetotsoeng".The synthesis method of sodium carboxymethyl cellulose e ile ea qaptjoa ke German E. Jansen ka 1918, ’me e ile ea fuoa tokelo ea molao ka 1921 ’me ea tsebahala lefatšeng ka bophara, eaba e rekisoa Europe.
CMC e sebelisoa haholo ho petroleum, geological , letsatsi le letsatsi lik'hemik'hale, lijo, meriana le liindasteri tse ling, tse tsejoang e le "industrial monosodium glutamate".
※Thepa ea sebopeho sa CMC
CMC ke phofo e tšoeu kapa e bobebe e mosehla, granular kapa fibrous solid.Ke lik'hemik'hale tsa macromolecular tse khonang ho monya metsi le ho ruruha.Ha e ruruha ka metsing, e ka etsa sekhomaretsi sa viscous se bonaletsang.PH ea ho emisoa ha metsi ke 6.5-8.5.Motsoako ona ha o qhibilihe ka har'a metsoako ea tlhaho e kang ethanol, ether, acetone le chloroform.
Solid CMC e batla e tsitsitse ho mocheso o khanyang le oa kamore, 'me e ka bolokoa nako e telele sebakeng se omileng.CMC ke mofuta oa cellulose ether, eo hangata e entsoeng ka lithara tse khutšoane tsa k'hothone (liteng tsa selulose ho fihla ho 98%) kapa makhasi a lehong, a tšoaroang ka sodium hydroxide ebe a arabela ka sodium monochloroacetate, boima ba limolek'hule tsa motsoako ke 6400 (± 1000).Hangata ho na le mekhoa e 'meli ea ho lokisetsa: mokhoa oa metsi-mashala le mokhoa oa ho qhibiliha.Ho boetse ho na le likhoele tse ling tsa semela tse sebelisoang ho lokisa CMC.
※Likarolo le lits'ebetso
CMC ha se feela emulsification stabilizer e ntle le e teteaneng lits'ebetsong tsa lijo, empa hape e na le serame se setle le botsitso ba ho qhibiliha, 'me e ka ntlafatsa tatso ea sehlahisoa le ho lelefatsa nako ea polokelo.
Ka 1974, Mokhatlo oa Lijo le Temo oa Machaba a Kopaneng (FAO) le Mokhatlo oa Lefatše oa Bophelo (WHO) li amohetse tšebeliso ea CMC e hloekileng lijong ka mor'a lipatlisiso le liteko tse matla tsa baeloji le chefo.Tšebeliso e sireletsehileng (ADI) ea maemo a machaba ke 25mg/kg boima ba ’mele/letsatsi.
※Thickening le botsitso ba emulsion
Ho ja CMC ho ka etsa emulsify le ho tsitsisa lino tse nang le mafura le protheine.Sena ke hobane CMC e fetoha colloid e tsitsitseng e hlakileng ka mor'a hore e qhibilihe ka metsing, 'me likaroloana tsa protheine li fetoha likaroloana tse nang le tefiso e tšoanang tlas'a tšireletso ea lera la colloidal, le ka etsang hore likaroloana tsa protheine li be boemong bo tsitsitseng.E na le phello e itseng ea emulsifying, kahoo e ka fokotsa tsitsipano ea holim'a metsi pakeng tsa mafura le metsi ka nako e le 'ngoe, e le hore mafura a ka kenngoa ka ho feletseng.
CMC e ka ntlafatsa botsitso ba sehlahisoa, hobane ha boleng ba pH ba sehlahisoa bo kheloha ho tloha sebakeng sa isoelectric sa protheine, sodium carboxymethyl cellulose e ka etsa sebopeho sa motsoako ka protheine, e ka ntlafatsang botsitso ba sehlahisoa.
※Eketsa bongata
Tšebeliso ea CMC ka ice cream e ka eketsa tekanyo ea ho atolosa ice cream, ho ntlafatsa lebelo la ho qhibiliha, ho fana ka sebōpeho se setle le tatso, le ho laola boholo le kholo ea likristale tsa leqhoa nakong ea lipalangoang le polokelo.Chelete e sebelisitsoeng ke 0.5% ea kakaretso ea Proportioned supplement.
Sena ke hobane CMC e na le polokelo e ntle ea metsi le dispersibility, 'me organically kopanya likaroloana tsa protheine, globules mafura, le limolek'hule tsa metsi ka colloid ho theha junifomo le tsamaiso e tsitsitseng.
※Hydrophilicity le Rehydration
Thepa ena e sebetsang ea CMC e sebelisoa ka kakaretso tlhahiso ea bohobe, e ka etsang junifomo ea mahe a linotši, e eketsa molumo, e fokotsa litšepe, hape e na le phello ea ho boloka mocheso le bocha;li-noodle tse kentsoeng ka CMC li na le bokhoni bo botle ba ho boloka metsi, li hana ho pheha, le tatso e ntle.
Sena se khethoa ke sebopeho sa limolek'hule tsa CMC, e leng sehlahisoa sa cellulose 'me se na le lihlopha tse ngata tsa hydrophilic ka har'a ketane ea molek'hule: -OH sehlopha, -COONa sehlopha, kahoo CMC e na le hydrophilicity e molemo ho feta cellulose le matla a ho tšoara metsi.
※ Gelation
Thixotropic CMC e bolela hore liketane tsa macromolecular li na le mekhoa e itseng ea ho sebelisana 'me li atisa ho theha sebopeho sa likarolo tse tharo.Ka mor'a hore ho thehoe sebopeho sa likarolo tse tharo, viscosity ea tharollo e eketseha, 'me ka mor'a hore sebopeho sa mahlakore a mararo se robehe, viscosity e fokotseha.Ketsahalo ea thixotropy ke hore phetoho e bonahalang ea viscosity e itšetlehile ka nako.
Thixotropic CMC e phetha karolo ea bohlokoa tsamaisong ea gelling mme e ka sebelisoa ho etsa jelly, jeme le lijo tse ling.
E ka sebelisoa e le clarifier, foam stabilizer, eketsa molomo
CMC e ka sebediswa tlhahisong ya veine ho etsa hore tatso e be bonolo le ho nonoha ka tatso e telele;e ka sebelisoa e le foam stabilizer tlhahisong ea biri ho etsa foam e ruileng le e tšoarellang nako e telele le ho ntlafatsa tatso.
CMC ke mofuta oa polyelectrolyte, e ka amehang liketsong tse fapaneng tsa veine ho boloka botsitso ba 'mele oa veine.Ka nako e ts'oanang, e boetse e kopanya le likristale tse entsoeng, ho fetola sebopeho sa likristale, ho fetola maemo a ho ba teng ha likristale ka veine, le ho baka pula.Ho kopanya lintho.
Nako ea poso: Dec-03-2022