Tsarin masana'anta na sodium carboxymethylcellulose

Tsarin masana'anta na sodium carboxymethylcellulose (CMC) ya ƙunshi matakai da yawa, gami da shirye-shiryen cellulose, etherification, tsarkakewa, da bushewa. Anan ga bayyani na tsarin masana'antu na yau da kullun:

1. Shiri na Cellulose: Tsarin yana farawa tare da shirye-shiryen cellulose, wanda yawanci ana samo shi daga ɓangaren itace ko linters auduga. An fara tsaftace cellulose kuma ana tacewa don cire datti kamar lignin, hemicellulose, da sauran gurɓataccen abu. Wannan tsarkakewar cellulose yana aiki azaman kayan farawa don samar da CMC.
2. Alkalization: Sa'an nan kuma ana kula da cellulose da aka tsarkake tare da maganin alkaline, yawanci sodium hydroxide (NaOH), don ƙara yawan aiki da kuma sauƙaƙe halayen etherification na gaba. Alkalization kuma yana taimakawa wajen kumbura da bude filayen cellulose, yana sa su fi samun sauki wajen gyara sinadarai.
3. Ra'ayin Etherification: An amsa cellulose alkalized tare da monochloroacetic acid (MCA) ko gishiri na sodium, sodium monochloroacetate (SMCA), a gaban mai kara kuzari a ƙarƙashin yanayin sarrafawa. Wannan halayen etherification ya ƙunshi maye gurbin ƙungiyoyin hydroxyl akan sarƙoƙin cellulose tare da ƙungiyoyin carboxymethyl (-CH2COONa). Matsakaicin maye (DS), wanda ke wakiltar matsakaicin adadin ƙungiyoyin carboxymethyl a kowace naúrar glucose na sarkar cellulose, ana iya sarrafa shi ta hanyar daidaita sigogin amsawa kamar zafin jiki, lokacin amsawa, da maida hankali.
4. Neutralization: Bayan da etherification dauki, sakamakon samfurin ne neutralized don canza duk sauran acidic kungiyoyin zuwa su sodium gishiri form (carboxymethylcellulose sodium). Ana samun wannan yawanci ta hanyar ƙara bayani na alkaline, kamar sodium hydroxide (NaOH), zuwa gaurayawan dauki. Neutralization kuma yana taimakawa wajen daidaita pH na maganin da kuma daidaita samfurin CMC.
5. Tsarkakewa: Danyen sodium carboxymethylcellulose ana tsarkake shi don cire ƙazanta, abubuwan da ba a yi amfani da su ba, da samfuran da aka samu daga cakudawar amsawa. Hanyoyin tsarkakewa na iya haɗawa da wankewa, tacewa, centrifugation, da bushewa. Ana wanke CMC da aka tsarkake da ruwa don cire ragowar alkali da gishiri, sannan tacewa ko centrifugation don raba ingantaccen samfurin CMC daga yanayin ruwa.
6. Bushewa: Tsabtataccen sodium carboxymethylcellulose an bushe a ƙarshe don cire danshi mai yawa da samun abun cikin da ake so don ajiya da ƙarin aiki. Hanyoyin bushewa na iya haɗawa da bushewar iska, bushewar feshi, ko bushewar ganga, dangane da halayen samfurin da ake so da sikelin masana'anta.

Sakamakon sodium carboxymethylcellulose samfurin shine farin zuwa kashe-fari foda ko kayan granular tare da kyakkyawan solubility na ruwa da kaddarorin rheological. Ana amfani dashi ko'ina azaman wakili mai kauri, stabilizer, ɗaure, da rheology modifier a cikin masana'antu daban-daban, gami da abinci, magunguna, kayan kwalliya, yadi, da aikace-aikacen masana'antu.