Sodium Carboxymethyl Cellulose |9000-11-7

Carboxy methyl cellulose (CMC) ama xanjo cellulose waa soosaar cellulose leh kooxaha carboxymethyl (-CH2-COOH) oo ku xidhan qaar ka mid ah kooxaha hydroxyl ee monomers glucopyranose ee ka kooban laf dhabarta cellulose.Waxaa inta badan loo isticmaalaa sida cusbada ay sodium, sodium carboxymethyl cellulose.

Waxaa lagu farsameeyaa falcelinta alkali-catalyzed ee cellulose leh chloroacetic acid.Polar (Organic acid) kooxaha karboksylku waxay keenaan cellulose mid milmaya oo kiimiko ahaan falceliya.Sifooyinka shaqeynaya ee CMC waxay ku xiran yihiin heerka beddelka qaab dhismeedka cellulose (ie, intee in le'eg oo ka mid ah kooxaha hydroxyl ayaa ka qayb qaatay falcelinta beddelka), iyo sidoo kale dhererka silsiladda qaab dhismeedka laf dhabarta cellulose iyo heerka ururinta beddelka karboxymethyl.

UsesCMC waxa loo isticmaalaa cilmiga cuntada sida wax ka beddelka viscosity ama dhumuc, iyo in lagu dejiyo emulsions alaabooyin kala duwan oo ay ku jiraan jalaatada.Sida cuntada lagu daro, waxay leedahay lambarka E466.Sidoo kale waa qayb ka mid ah badeecooyin badan oo aan cunto ahayn, sida KY Jelly, daawada cadayga, caloosha jilcisa, kaniiniyada cuntada, rinjiga biyaha ku salaysan, saabuunta, cabbirka dunta iyo alaabada waraaqaha kala duwan.Waxaa loo isticmaalaa ugu horreyn sababtoo ah waxay leedahay viscosity sare, ma aha sun, iyo waa hypoallergenic.Saabuunta dharka lagu dhaqo waxaa loo isticmaalaa sidii polymer-ka-joojinta ciidda loogu talagalay in lagu shubo suufka iyo maryaha kale ee cellulosic-ka oo abuuraya xannibaad taban oo ku wajahan carrada xalka dhaqidda.CMC waxa loo isticmaalaa saliid ahaan dhibcaha indhaha ee aan kacsanayn (ilmo macmal ah).Mararka qaarkood waa methyl cellulose (MC) kaas oo la isticmaalo, laakiin kooxaha methyl non-polar (-CH3) kuma darin wax milmayn ama falcelis kiimikaad ee cellulose salka.

Ka dib falcelinta bilawga ah isku darka natiijadu waxay soo saartaa qiyaastii 60% CMC iyo 40% cusbo (sodium chloride iyo sodium glycolate).Alaabtani waa waxa loogu yeero Farsamada CMC oo loo isticmaalo saabuunta.Nidaam nadiifin dheeraad ah ayaa loo isticmaalaa si meesha looga saaro milixdan si loo soo saaro CMC saafi ah oo loo isticmaalo codsiyada cuntada, dawooyinka iyo ilkaha (dawada ilkaha).Waxa kale oo la soo saaray darajada dhexdhexaadka ah ee "semi-la nadiifiyey", oo sida caadiga ah loo isticmaalo codsiyada waraaqaha.

CMC waxa kale oo loo isticmaalaa dawooyinka sida wakiilka dhumuc.CMC waxa kale oo loo isticmaalaa warshadaha qodista saliidda sida qayb ka mid ah dhoobada qodista, halkaas oo ay u shaqeyso sidii wax ka beddelka viscosity iyo wakiilka biyaha-haynta.Poly-anionic cellulose ama PAC waxaa laga soo qaatay cellulose waxaana sidoo kale loo isticmaalaa dhaqanka saliidda.CMC xaqiiqdii waa Acid Carboxylic, halka PAC ay tahay Ether.CMC iyo PAC, in kasta oo laga soo saaray isla walxo cayriin ah (cellulose, qadarka iyo nooca agabka la isticmaalay ayaa keenaya alaabooyin kala duwan oo kama dambeys ah. Farqiga ugu horreeya iyo farqiga u dhexeeya CMC iyo PAC waxay ku jiraan tallaabada xagjirnimada. CarboxyMethyl Cellulose (CMC) waa labadaba kiimiko iyo jir ahaan laga soocay Polyanionic Cellulose.

Carboxymethyl cellulose microgranular aan la milmi karin waxaa loo isticmaalaa sida resin cation-exchange in chromatography ion-exchange ee nadiifinta ee Proteins.Malaha heerka derivatization waa mid aad u hooseeya si sifooyinka milanka ee cellulose microgranular waxaa lagu hayaa halka isagoo intaa ku daray ku filan kooxo carboxylate taban eedeeyay si togan loo xidho. borotiinno la dallacay.

CMC waxaa sidoo kale loo isticmaalaa xirmooyinka barafka si loo sameeyo isku dhafka eutectic taasoo keeneysa bar qaboojin hoose oo sidaas darteed awood badan oo qaboojin ah marka loo eego barafka.

Xalalka aqueous CMC ayaa sidoo kale loo isticmaalay in lagu kala firdhiyo nanotubeska kaarboon.Waxaa loo maleynayaa in molecules-ka dheer ee CMC ay ku duubaan nanotubes, iyaga oo u oggolaanaya in lagu kala firdhiyo biyaha.

EnzymologyCMC ayaa sidoo kale si weyn loo isticmaalay si loo garto dhaqdhaqaaqa ensaymka ee endoglucanases (qayb ka mid ah isku-dhafka cellulase).CMC waa substrate aad u gaar ah oo loogu talagalay endo-acting cellulases maadaama qaab-dhismeedkeeda loo habeeyay si loo kala saaro cellulose loona abuuro goobo aan caadi ahayn oo ku habboon ficilka endglucanase.CMC waa mid la jecel yahay sababtoo ah badeecada catalysis (glucose) si fudud ayaa loo cabbiraa iyadoo la isticmaalayo qiyaasta sonkorta dhimista sida 3,5-Dinitrosalicylic acid.Isticmaalka CMC ee qiyaasaha enzymes ayaa si gaar ah muhiim u ah baaritaanka enzymes cellulase ee looga baahan yahay beddelka ethanol ee cellulosic oo waxtar leh.Si kastaba ha ahaatee, CMC ayaa sidoo kale si xun loogu isticmaalay shaqadii hore ee ensaymes-ka cellulase maadaama qaar badan ay la xiriireen dhaqdhaqaaqa unugyadu oo dhan iyo CMC hydrolysis.Sida habka cellulose depolymerization uu noqday mid aad loo fahmay, waa in la ogaadaa in exo-cellulases ay ku badan yihiin xaalufka crystalline (tusaale Avicel) oo aan milmin (tusaale CMC) cellulose.