Sodium carboxymethyl cellulose (CMC), kuma aka sani da carboxymethyl cellulose. Ether ce mai girma-polymer cellulose da aka shirya ta hanyar sinadari mai gyara cellulose na halitta, kuma tsarinsa ya ƙunshi raka'a D-glucose da ke da alaƙa da β_(14) glycosidic bonds.
CMC fari ne ko madara farar fibrous foda ko granules tare da yawa na 0.5g/cm3, kusan mara daɗi, mara wari da hygroscopic.
Carboxymethyl cellulose yana da sauƙin tarwatsawa, yana samar da maganin colloidal na gaskiya a cikin ruwa, kuma ba shi da narkewa a cikin kaushi na halitta kamar ethanol.
Lokacin pH> 10, ƙimar pH na 1% maganin ruwa shine 6.5≤8.5.
Babban halayen shine kamar haka: cellulose na halitta an fara alkalized tare da NaOH, sannan an ƙara chloroacetic acid, kuma hydrogen akan ƙungiyar hydroxyl akan rukunin glucose yana amsawa tare da ƙungiyar carboxymethyl a cikin chloroacetic acid.
Ana iya gani daga tsarin cewa akwai ƙungiyoyin hydroxyl guda uku akan kowace rukunin glucose, wato C2, C3 da C6 ƙungiyoyin hydroxyl, kuma matakin maye gurbin hydrogen akan rukunin hydroxyl na rukunin glucose yana wakilta ta alamun zahiri da sinadarai.
Idan hydrogens a kan rukunin hydroxyl guda uku akan kowace naúrar an maye gurbinsu da ƙungiyoyin carboxymethyl, to ana bayyana matakin maye gurbin azaman 7-8, tare da matsakaicin digiri na maye gurbin 1.0 (majin abinci kawai zai iya cimma wannan matakin). Matsayin maye gurbin CMC kai tsaye yana shafar solubility, emulsification, thickening, kwanciyar hankali, juriya na acid da juriya na gishiri na CMC.
Lokacin amfani da samfuran CMC, yakamata mu fahimci ainihin ma'aunin ma'auni, kamar kwanciyar hankali, danko, juriyar acid, danko, da sauransu.
Hakika, daban-daban aikace-aikace amfani daban-daban carboxymethyl cellulose, domin akwai da yawa iri danko aiki a kan carboxymethyl cellulose, da kuma jiki da kuma sinadaran Manuniya ma daban-daban. Sanin waɗannan, za ku iya sanin yadda za ku zaɓi samfurin da ya dace.
Lokacin aikawa: Nuwamba-07-2022