Sodium Carboxymethyl Cellulose | 9000-11-7

Carboxy methyl cellulose (CMC) ko cellulose danko ne wani cellulose samu tare da carboxymethyl kungiyoyin (-CH2-COOH) daure zuwa wasu daga cikin hydroxyl kungiyoyin na glucopyranose monomers wanda ya hada da cellulose kashin baya. Ana amfani da shi azaman gishirin sodium, sodium carboxymethyl cellulose.

An haɗa shi ta hanyar alkali-catalyzed dauki na cellulose tare da chloroacetic acid. Ƙungiyar polar (Organic acid) ƙungiyoyin carboxyl suna sa cellulose mai narkewa da amsawa ta hanyar sinadarai. Abubuwan da ke aiki na CMC sun dogara ne akan matakin maye gurbin tsarin cellulose (watau nawa ne ƙungiyoyin hydroxyl suka shiga cikin maye gurbin), da kuma tsawon sarkar tsarin kashin bayan cellulose da matakin tari. Carboxymethyl maye gurbin.

Ana amfani da UsesCMC a kimiyyar abinci azaman mai gyara danko ko kauri, da kuma daidaita emulsions a cikin samfura daban-daban ciki har da ice cream. A matsayin ƙari na abinci, yana da lambar E466. Har ila yau, ya ƙunshi yawancin kayayyakin abinci da ba na abinci ba, irin su KY Jelly, man goge baki, maganin laxative, magungunan rage cin abinci, fenti na ruwa, kayan wanke-wanke, girman yadudduka da samfuran takarda daban-daban. Ana amfani da shi da farko saboda yana da babban danko, ba mai guba ba, kuma yana da hypoallergenic. A cikin kayan wanki ana amfani da shi azaman polymer dakatarwar ƙasa wanda aka ƙera don sakawa akan auduga da sauran yadudduka na cellulosic suna haifar da mummunan cajin shinge ga ƙasa a cikin maganin wanki. Ana amfani da CMC azaman mai mai a cikin ɗigon ido marasa ƙarfi ( hawaye na wucin gadi). Wani lokaci shi ne methyl cellulose (MC) da ake amfani da, amma da wadanda ba iyakacin duniya methyl kungiyoyin (-CH3) ba su ƙara wani solubility ko sinadaran reactivity zuwa tushe cellulose.

Bayan amsawar farko, cakudawar yana samar da kusan 60% CMC da gishiri 40% (sodium chloride da sodium glycolate). Wannan samfurin shine abin da ake kira Technical CMC wanda ake amfani dashi a cikin wanki. Ana amfani da ƙarin tsarin tsarkakewa don cire waɗannan gishiri don samar da CMC mai tsabta wanda ake amfani da shi don abinci, magunguna da kayan aikin haƙori (tothpaste). Ana kuma samar da matsakaicin "tsaftace-tsaftace" mai matsakaici, yawanci ana amfani da shi a aikace-aikacen takarda.

Hakanan ana amfani da CMC a cikin magunguna azaman wakili mai kauri. Hakanan ana amfani da CMC a masana'antar hako mai a matsayin sinadari na hako laka, inda yake aiki azaman mai gyara danko da mai riƙe ruwa. Poly-anionic cellulose ko PAC an samo shi daga cellulose kuma ana amfani dashi a aikin filin mai. CMC tabbas shine Carboxylic Acid, inda PAC shine Ether. CMC da PAC, ko da yake an kerarre su daga albarkatun ƙasa guda ɗaya (cellulose, adadin da nau'in kayan da aka yi amfani da su suna haifar da samfuran ƙarshe daban-daban. Na farko da babban bambanci tsakanin CMC da PAC sun kasance a matakin radicalization. a zahiri bambanta daga Polyanionic Cellulose.

Insoluble microgranular carboxymethyl cellulose da ake amfani da matsayin cation-musanya guduro a ion-musanya chromatography ga tsarkakewa na Sunadaran. Mai yiwuwa matakin derivatization ne da yawa m sabõda haka, solubility Properties na microgranular cellulose suna riƙe yayin da ƙara isasshen korau caje carboxylate kungiyoyin to daure gaskiya. sunadarai masu caji.

Hakanan ana amfani da CMC a cikin fakitin kankara don samar da cakuda eutectic wanda ke haifar da ƙaramin daskarewa don haka mafi ƙarfin sanyaya fiye da kankara.

Hakanan an yi amfani da mafita mai ruwa CMC don tarwatsa carbon nanotubes. Ana tunanin cewa dogayen kwayoyin CMC sun nannade a kusa da nanotubes, suna ba da damar tarwatsa su cikin ruwa.

An kuma yi amfani da EnzymologyCMC da yawa don siffanta ayyukan enzyme daga endoglucanases (ɓangare na hadaddun cellulase). CMC ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙwayar ƙwayar cuta ce ta endo-aiki kamar yadda aka ƙera tsarinsa don lalata cellulose da ƙirƙirar rukunin amorphous waɗanda ke da kyau don aikin endglucanase. CMC yana da kyawawa saboda samfurin catalysis (glucose) ana auna sauƙin ta amfani da ƙididdigar rage sukari kamar 3,5-Dinitrosalicylic acid. Yin amfani da CMC a cikin gwaje-gwajen enzyme yana da mahimmanci musamman game da nunawa don enzymes cellulase waɗanda ake buƙata don ingantaccen canjin ethanol na cellulosic. Duk da haka, an kuma yi amfani da CMC a cikin aikin farko tare da enzymes cellulase kamar yadda mutane da yawa sun haɗu da dukan aikin cellulase tare da CMC hydrolysis. Kamar yadda tsarin depolymerization na cellulose ya zama mafi fahimta, ya kamata a lura cewa exo-cellulases suna da rinjaye a cikin lalacewar crystalline (misali Avicel) kuma ba mai narkewa (misali CMC) cellulose.