Mapangidwe a sodium carboxymethyl cellulose

Mawu Oyamba

Carboxymethyl cellulose (CMC) ndi mtundu wa cellulose yochokera ku cellulose ndi carboxymethylation. Ndi ufa woyera, wopanda fungo, wosakoma umene umagwiritsidwa ntchito kwambiri m’zakudya, m’mankhwala, m’zodzola, ndi m’mafakitale ena. CMC ndi polima yosungunuka m'madzi yomwe imakhala ndi ntchito zosiyanasiyana chifukwa cha mawonekedwe ake apadera. Amagwiritsidwa ntchito ngati thickening wothandizira, stabilizer, emulsifier, ndi kuyimitsa wothandizira. CMC imagwiritsidwanso ntchito ngati colloid yoteteza popanga mapepala ndi nsalu.

Kapangidwe

Mapangidwe a carboxymethyl cellulose (CMC) amapangidwa ndi mzere wozungulira wa mamolekyu a shuga omwe amalumikizidwa pamodzi ndi ma glycosidic bond. Mamolekyu a glucose amalumikizidwa wina ndi mnzake ndi atomu imodzi ya okosijeni, kupanga unyolo wozungulira. Unyolo wa mzere umatchedwa carboxymethylated, zomwe zikutanthauza kuti gulu la carboxymethyl (CH2COOH) limamangiriridwa ku gulu la hydroxyl (OH) la molekyulu ya glucose. Njira ya carboxymethylation iyi imabweretsa molekyu yoyipa ya carboxymethyl cellulose.

Mapangidwe a carboxymethyl cellulose amatha kuyimiridwa ndi njira iyi:

(C6H10O5)n-CH2COOH

kumene n ndi digiri ya m'malo (DS) ya gulu la carboxymethyl. Mlingo wolowa m'malo ndi kuchuluka kwa magulu a carboxymethyl pa molekyulu ya glucose. Kukwera kwa digiri ya m'malo, kumapangitsanso kukhuthala kwa yankho la CMC.

Katundu Carboxymethyl cellulose ili ndi zinthu zingapo zapadera zomwe zimapangitsa kuti zikhale zothandiza pamagwiritsidwe osiyanasiyana. Ndi polima yosungunuka m'madzi yomwe imakhala yokhazikika pamayankho amadzi. Imakhalanso yopanda poizoni, yosakwiyitsa, komanso yopanda allergenic. CMC imalimbananso ndi kuwonongeka kwa tizilombo toyambitsa matenda ndipo simakhudzidwa ndi pH kapena kutentha. CMC ndi chokhuthala champhamvu ndipo chitha kugwiritsidwa ntchito kukulitsa zakumwa zosiyanasiyana, kuphatikiza chakudya, mankhwala, ndi zodzola. Amagwiritsidwanso ntchito ngati emulsifier, stabilizer, ndi kuyimitsa wothandizira. CMC imagwiritsidwanso ntchito ngati colloid yoteteza popanga mapepala ndi nsalu. Pomaliza Carboxymethyl cellulose (CMC) ndi mtundu wa cellulose yochokera ku cellulose ndi carboxymethylation. Ndi ufa woyera, wopanda fungo, wosakoma umene umagwiritsidwa ntchito kwambiri m’zakudya, m’mankhwala, m’zodzola, ndi m’mafakitale ena. CMC imapangidwa ndi mzere wozungulira wa mamolekyu a shuga omwe amalumikizidwa pamodzi ndi ma glycosidic bond ndi carboxymethylated. Lili ndi zinthu zingapo zapadera zomwe zimapangitsa kuti zikhale zothandiza pazinthu zosiyanasiyana. CMC ndi wamphamvu thickening wothandizira ndipo angagwiritsidwe ntchito ngati emulsifier, stabilizer, ndi suspending wothandizira. Amagwiritsidwanso ntchito ngati colloid yoteteza popanga mapepala ndi nsalu.