Amfani da cellulose a matsayin kayan halitta,CMC-NaAn shirya shi ta hanyar matakai biyu. Na farko shine tsarin alkalization na cellulose. Cellulose yana amsawa da sodium hydroxide don samar da alkali cellulose, sannan alkali cellulose yana amsawa da chloroacetic acid don samar da CMC-Na, wanda ake kira etherification.
Dole ne tsarin amsawar ya zama alkaline. Wannan tsari ya shafi hanyar hada sinadarin Williamson ether. Tsarin amsawar shine maye gurbin nucleophilic. Tsarin amsawar yana da alkaline, kuma yana tare da wasu halayen gefe a gaban ruwa, kamar sodium glycolate, glycolic acid da sauran kayayyakin da aka samo. Saboda wanzuwar halayen gefe, yawan amfani da maganin alkali da etherification zai ƙaru, ta haka ne zai rage ingancin etherification; A lokaci guda, ana iya samar da sodium glycolate, glycolic acid da ƙarin ƙazanta na gishiri a cikin amsawar gefe, wanda ke haifar da rashin tsarki da aiki na samfurin. Domin a danne halayen gefe, ba wai kawai a yi amfani da alkali yadda ya kamata ba, har ma a sarrafa adadin tsarin ruwa, yawan alkali da hanyar motsawa don manufar isasshen alkali. A lokaci guda, ya kamata a yi la'akari da buƙatun samfurin akan danko da matakin maye gurbin, kuma ya kamata a yi la'akari da saurin motsawa da zafin jiki sosai. Kulawa da sauran abubuwa, ƙara yawan etherification, da kuma hana faruwar halayen gefe.
A cewar hanyoyin sadarwa daban-daban na etherification, ana iya raba samar da CMC-Na na masana'antu zuwa rukuni biyu: hanyar da aka yi amfani da ruwa da kuma hanyar da aka yi amfani da ruwa. Hanyar da aka yi amfani da ruwa a matsayin hanyar da aka yi amfani da ruwa ana kiranta hanyar da aka yi amfani da ita wajen samar da matsakaicin alkaline da ƙarancin CMC-Na. Hanyar da aka yi amfani da sinadarin Organic a matsayin hanyar da aka yi amfani da shi wajen samar da sinadarin, wanda ya dace da samar da sinadarin CMC-Na matsakaici da babban inganci. Waɗannan halayen guda biyu ana yin su ne a cikin wani injin ƙusa, wanda ke cikin tsarin ƙusa kuma a halin yanzu shine babban hanyar samar da sinadarin CMC-Na.
Hanyar matsakaici ta ruwa:
Hanyar da ake amfani da ita wajen samar da ruwa ita ce hanyar da masana'antu suka fara amfani da ita, wadda ke mayar da martani ga sinadarin alkali cellulose da kuma sinadarin etherification a ƙarƙashin yanayin alkali da ruwa mai 'yanci. A lokacin alkali da kuma etherification, babu wani abu mai gina jiki a cikin tsarin. Bukatun kayan aiki na hanyar watsa ruwa suna da sauƙi, tare da ƙarancin jari da ƙarancin farashi. Rashin amfani da shi shine rashin isasshen ruwa mai yawa, zafin da amsawar ke samarwa yana ƙara zafin jiki, yana hanzarta saurin amsawar gefe, yana haifar da ƙarancin ingancin etherification, da kuma rashin ingancin samfura. Ana amfani da hanyar don shirya samfuran CMC-Na matsakaici da ƙananan, kamar sabulun wanki, masu auna yadi da makamantansu.
Hanyar narkewar abinci:
Ana kuma kiran hanyar narkewar sinadarai ta hanyar sinadaran halitta, kuma babban fasalinta shine cewa ana yin alkali da kuma etherification a ƙarƙashin yanayin wani abu mai narkewar sinadarai ta hanyar sinadaran halitta a matsayin mai narkewar sinadarai (mai narkewar sinadarai). Dangane da adadin mai narkewar sinadarai ta hanyar sinadarai, an raba shi zuwa hanyar hadawa da kuma hanyar hadawa. Hanyar hadawa iri daya ce da tsarin hadawa ta hanyar ruwa, kuma ta kunshi matakai biyu na alkali da etherification, amma hanyar hadawa ta wadannan matakai biyu ta bambanta. Hanyar hadawa tana adana tsarin jika alkali, matsi, nika, tsufa da sauransu da ke cikin hanyar ruwa, kuma alkali da etherification duk ana yin su ne a cikin mai hadawa. Rashin kyawunsu shine cewa ikon sarrafa zafin jiki yana da rauni sosai, kuma bukatar sarari da farashi suna da yawa. Tabbas, don samar da tsare-tsare daban-daban na kayan aiki, ya zama dole a sarrafa zafin tsarin, lokacin ciyarwa, da sauransu sosai, don a iya shirya kayayyakin da ke da inganci da aiki mai kyau.
Lokacin Saƙo: Afrilu-25-2024