CMC ikoresha munganda zidasanzwe

Carboxymethyl selulose (izwi kandi nka CMC na sodium carboxymethyl selulose) ishobora gusobanurwa nka anionic water-soluble polymer, ikomoka muri selile naturel binyuze muri etherification, igasimbuza hydroxyl hamwe nitsinda rya carboxymethyl kuri selile ya Chain carboxymethyl selulose ikoreshwa nka binder, kubyimbye, guhagarika agent no kuzuza mubisabwa bitandukanye.

Ihame ry'imyitwarire

Imiti nyamukuru ya CMC ni reaction ya alkalisation ya selile na alkali kugirango ikore alkali selulose na etherification reaction ya alkali selile na aside monochloroacetic.

Intambwe ya 1: Alkalisation: [C6H7O2 (OH) 3] n + nNaOH→[C6H7O2 (OH) 2ONa] n + nH2O

Intambwe ya 2: Kwiyongera: [C6H7O2 (OH) 2ONa] n + nClCH2COONa→[C6H7O2 (OH) 2OCH2COONa] n + nNaCl

Imiterere yimiti

Inkomoko ya selile hamwe na carboxymethyl insimburangingo itegurwa no kuvura selile hamwe na hydroxide ya sodium kugirango ikore alkali selile, hanyuma ikore na aside monochloroacetic. Igice cya glucose kigizwe na selile gifite amatsinda 3 ya hydroxyl ashobora gusimburwa, bityo ibicuruzwa bifite impamyabumenyi zitandukanye zo kubisimbuza birashobora kuboneka. Ugereranije, 1mmol ya carboxymethyl itangirwa kuri 1g yuburemere bwumye. Ntishobora gushonga mumazi na acide acide, ariko irashobora kubyimba no gukoreshwa muburyo bwa chromatografiya. PKa ya carboxymethyl ni nka 4 mumazi meza na 3.5 muri 0.5mol / L NaCl. Nibihinduranya acide acide kandi mubisanzwe bikoreshwa mugutandukanya poroteyine zidafite aho zibogamiye na pH 4 cyangwa zirenga. Abafite ibice birenga 40% byamatsinda ya hydroxyl yasimbuwe na carboxymethyl barashobora gushonga mumazi kugirango bibe igisubizo gihamye-cyinshi cya colloidal.

Ibiranga ibicuruzwa byaibikoresho icyiciro cya CMC

Nyuma yo kongerwaho kumashanyarazi, guhuzagurika ni hejuru, gukorera mu mucyo, kandi ntibisubira kunanuka;

Irashobora kubyimba neza no gutuza ibice byamazi;

Ongeramo ifu yo kumesa hamwe nogukoresha amazi birashobora gukumira umwanda wogejwe kongera gutura kumyenda. Ongeraho 0.5-2% kumashanyarazi ikoreshwa bishobora kugera kubisubizo bishimishije;

CMC ikoresha munganda zidasanzwe, Ahaninikwibanda kuri emulisation hamwe nuburinzi bwa colloid ya CMC. Anion yakozwe mugihe cyo gukaraba irashobora icyarimwe gukora ubuso bwo gukaraba hamwe nuduce twumwanda twashizwemo nabi, kuburyo ibice byumwanda bigira itandukanyirizo ryicyiciro cyamazi kandi bigira ingaruka zimwe hejuru yo gukaraba gukomeye. Kwiyanga, birinda umwanda kongera gushira kumesa, birashobora kugumana umweru wimyenda yera, namabara meza yimyenda yamabara.

Imikorere ya CMC muriibikoresho

1. Kubyimba, gutatanya no kwigana, birashobora gukurura amavuta yamavuta azengurutse ibibara kugirango bipfundikire amavuta, kugirango irangi ryamavuta rihagarare kandi ritatanye mumazi, hanyuma bigire firime hydrophilique hejuru yibintu byogejwe, bityo bikumire. amavuta yamavuta yo guhuza ibintu byogejwe.
2. Urwego rwo hejuru rwo gusimbuza no guhuza, gukorera mu mucyo;
3. Gukwirakwiza neza mumazi no kurwanya resorption nziza;
4. Ubwiza buhebuje kandi butajegajega.