Sodium Carboxymethyl Cellulose | 9000-11-7

Carboxy methyl cellulose (CMC) kana cellulose chingamu inobuda muselulosi ine carboxymethyl mapoka (-CH2-COOH) inosungirirwa kune mamwe emapoka ehydroxyl eglucopyranose monomers anoumba cellulose musana. Inowanzoshandiswa semunyu wayo sodium, sodium carboxymethyl cellulose.

Iyo inogadzirwa neiyo alkali-catalyzed reaction ye cellulose ine chloroacetic acid. Iyo polar (organic acid) carboxyl mapoka anopa iyo cellulose kunyungudika uye kuita kemikari. Iyo inoshanda zvimiro zveCMC zvinoenderana nehuwandu hwekutsiviwa kweiyo cellulose chimiro (kureva, mangani emapoka ehydroxyl atora chikamu mukutsiva maitiro), pamwe nekureba kweketani ye cellulose backbone chimiro uye dhigirii rekubatanidza iyo carboxymethyl inotsiva.

UsesCMC inoshandiswa musainzi yechikafu sechinakisiko chekuchinja kana kukora, uye kudzikamisa emulsions muzvigadzirwa zvakasiyana zvinosanganisira ice cream. Sekuwedzera kwechikafu, ine nhamba E466. Iyo zvakare inhengo yezvakawanda zvisiri zvekudya zvigadzirwa, seKY Jelly, mushonga wemazino, laxatives, mapiritsi ekudya, pendi-yakavakirwa mvura, zvekugezesa, machira saizi uye akasiyana zvigadzirwa zvemapepa. Inoshandiswa zvakanyanya nekuti ine yakakwira viscosity, haina chepfu, uye hypoallergenic. Mumigero yekugezesa inoshandiswa sepolymer yevhu inomisa padonje uye mamwe machira e cellulosic achigadzira chinovharira chakashata kune ivhu mumhinduro yekuwachisa. CMC inoshandiswa semafuta ekudonha mumaziso asingatenderere (misodzi yekugadzira). Dzimwe nguva ndeye methyl cellulose (MC) inoshandiswa, asi ayo asiri-polar methyl mapoka (-CH3) haawedzere chero solubility kana kemikari reactivity kune base cellulose.

Zvichitevera kuita kwekutanga musanganiswa unobuda unoburitsa inenge 60% CMC pamwe ne40% munyu (sodium chloride uye sodium glycolate). Ichi chigadzirwa ndicho chinonzi Technical CMC chinoshandiswa mukuchenesa. Imwezve nzira yekuchenesa inoshandiswa kubvisa iyi munyu kugadzira CMC yakachena iyo inoshandiswa pakudya, mishonga uye dentifrice (toothpaste) application. Yepakati "semi-yakacheneswa" giredhi inogadzirwawo, inowanzo shandiswa mumapepa ekushandisa.

CMC inoshandiswawo mumishonga semushonga wekukora. CMC inoshandiswawo muindasitiri yekuchera oiri sechinhu chekuchera madhaka, uko inoshanda senge viscosity modifier uye mvura inochengetedza mumiririri. Poly-anionic cellulose kana PAC inotorwa kubva ku cellulose uye inoshandiswawo mukuita kwemafuta. CMC ndeyechokwadi Carboxylic Acid, uko PAC iri Ether. CMC nePAC, nyangwe zvichigadzirwa kubva kuzvinhu zvakangofanana (selulosi, huwandu uye rudzi rwezvinhu zvinoshandiswa zvinotungamira zvigadzirwa zvekupedzisira zvakasiyana. Musiyano wekutanga uye unotungamira pakati peCMC nePAC uripo padanho rekuita radicalization. CarboxyMethyl Cellulose (CMC) ndeyemakemikari uye akasiyana mumuviri kubva kuPolyanionic Cellulose.

Insoluble microgranular carboxymethyl cellulose inoshandiswa se cation-exchange resin muion-exchange chromatography yekucheneswa kweProteins.Zvichida chiyero chekubvisa chakaderera zvikuru kuitira kuti solubility properties ye microgranular cellulose inochengetedzwa apo ichiwedzera zvakakwana zvakashata zvinopomerwa zvecarboxylate mapoka kuti asunge zvakanaka. mapuroteni akachajwa.

CMC inoshandiswawo mumazaya echando kugadzira musanganiswa we eutectic unokonzeresa kuti pave nechando chakaderera uye nekudaro kutonhora kwakawanda kupfuura ice.

Aqueous mhinduro CMC yakashandiswawo kuparadzira kabhoni nanotubes. Inofungidzirwa kuti mamorekuru eCMC akareba anoputira nanotubes, achiabvumira kuti aparadzirwe mumvura.

EnzymologyCMC yakashandiswawo zvakanyanya kuratidza chiitiko che enzyme kubva endoglucanases (chikamu che cellulase complex). CMC inzvimbo yakasarudzika ye endo-acting cellulases sezvo chimiro chayo chakagadzirwa kuti chisvibise cellulose uye kugadzira amorphous nzvimbo dzakanakira endglucanase chiito. CMC inodiwa nekuti iyo catalysis chigadzirwa (glucose) inoyerwa zviri nyore uchishandisa inoderedza shuga assay senge 3,5-Dinitrosalicylic acid. Kushandisa CMC mukuyedza maenzayimu kwakakosha zvakanyanya maererano nekuongororwa kwema cellulase enzymes anodiwa kuti awedzere kunyatsoita cellulosic ethanol shanduko. Nekudaro, CMC yakashandiswawo zvisizvo mukutanga kushanda nema cellulase enzymes sezvo vazhinji vaive vabatanidza yakazara cellulase chiitiko neCMC hydrolysis. Sezvo nzira ye cellulose depolymerization yave kunzwisiswa zvakanyanya, zvinofanirwa kucherechedzwa kuti exo-serosi ndiyo inonyanya kushatisa yecrystalline (eg Avicel) uye isinganyungudika (eg CMC) cellulose.