Sodium carboxymethylcellulose(SCMC) ndi madzi osungunuka a cellulose omwe amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, monga chakudya, mankhwala, ndi zodzoladzola, monga thickener, stabilizer, ndi emulsifier. Kupanga kwa SCMC kumaphatikizapo njira zingapo, kuphatikiza alkalization, etherification, kuyeretsa, ndi kuyanika.

1. Alkalization

Gawo loyamba popanga SCMC ndi alkalization ya cellulose. Ma cellulose amachokera ku matabwa kapena ulusi wa thonje, womwe umaphwanyidwa kukhala tinthu tating'onoting'ono kudzera m'njira zosiyanasiyana zamakina ndi mankhwala. Ma cellulose omwe amatsatira amathandizidwa ndi alkali, monga sodium hydroxide (NaOH) kapena potaziyamu hydroxide (KOH), kuti awonjezere kuyambiranso kwake komanso kusungunuka.

Dongosolo la alkalization limaphatikizapo kusakaniza cellulose ndi yankho lokhazikika la NaOH kapena KOH pamatenthedwe okwera ndi zovuta. Zomwe zimachitika pakati pa cellulose ndi alkali zimapangitsa kuti pakhale sodium kapena potaziyamu cellulose, yomwe imakhala yotakasuka ndipo imatha kusinthidwa mosavuta.

2. Etherification

Gawo lotsatira popanga SCMC ndi etherification ya sodium kapena potaziyamu cellulose. Izi zimaphatikizapo kuyambitsa magulu a carboxymethyl (-CH2-COOH) pamsana wa cellulose pogwiritsa ntchito chloroacetic acid (ClCH2COOH) kapena mchere wake wa sodium kapena potaziyamu.

The etherification anachita ambiri ikuchitika mu madzi-ethanol osakaniza pa okwera kutentha ndi mavuto, ndi Kuwonjezera chothandizira, monga sodium hydroxide kapena sodium methylate. Zimene ndi kwambiri exothermic ndipo amafuna kusamala kulamulira anachita zinthu kupewa kutenthedwa ndi mankhwala kuwonongeka.

Mlingo wa etherification, kapena kuchuluka kwa magulu a carboxymethyl pa molekyulu ya cellulose, amatha kuwongoleredwa posintha momwe amachitira, monga kuchuluka kwa chloroacetic acid ndi nthawi yochitira. Madigiri apamwamba a etherification amabweretsa kusungunuka kwamadzi kwapamwamba komanso kukhuthala kwamphamvu kwa SCMC.

3. Kuyeretsedwa

Pambuyo pakuchita kwa etherification, SCMC yomwe imabwera nthawi zambiri imakhala ndi zonyansa, monga cellulose, alkali, ndi chloroacetic acid. Njira yoyeretsera ikuphatikizapo kuchotsa zonyansazi kuti mupeze chinthu choyera komanso chapamwamba kwambiri cha SCMC.

Njira yoyeretsera nthawi zambiri imaphatikizapo masitepe angapo ochapira ndi kusefera pogwiritsa ntchito madzi kapena njira zamadzi za ethanol kapena methanol. Zotsatira za SCMC zimasinthidwa ndi asidi, monga hydrochloric acid kapena acetic acid, kuchotsa alkali iliyonse yotsalira ndikusintha pH kuti ikhale yoyenera.

4. Kuyanika

Gawo lomaliza popanga SCMC ndikuyanika kwa chinthu choyeretsedwa. SCMC yowuma imakhala ngati ufa woyera kapena granule ndipo imatha kukonzedwanso m'njira zosiyanasiyana, monga mayankho, ma gels, kapena mafilimu.

Njira yowumitsa imatha kuchitidwa pogwiritsa ntchito njira zosiyanasiyana, monga kuyanika kutsitsi, kuyanika ng'oma, kapena kuyanika vacuum, kutengera zomwe mukufuna komanso kukula kwake. Njira yowumitsa iyenera kuyang'aniridwa mosamala kuti isatenthedwe kwambiri, zomwe zingayambitse kuwonongeka kwa mankhwala kapena kusinthika.

Kugwiritsa ntchito sodium Carboxymethylcellulose

Sodium carboxymethylcellulose (SCMC) imagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, monga chakudya, mankhwala, zodzoladzola, ndi chisamaliro chamunthu, chifukwa cha kusungunuka kwake kwamadzi, kukhuthala, kukhazikika, komanso kutulutsa zinthu.

Makampani a Chakudya

M'makampani azakudya, SCMC imagwiritsidwa ntchito ngati chowonjezera, chokhazikika, komanso emulsifier muzakudya zosiyanasiyana, monga zowotcha, mkaka, sosi, zovala, ndi zakumwa. SCMC imagwiritsidwanso ntchito ngati cholowa m'malo mwamafuta muzakudya zotsika kwambiri komanso zochepetsetsa.