Haka kuma, ana raba danko na sodium carboxymethyl cellulose zuwa matakai daban-daban bisa ga amfani daban-daban. Danko na nau'in wanke-wanke shine 10-70 (ƙasa da 100), iyakar danko na sama shine daga 200-1200 don kayan ado na gini da sauran masana'antu, kuma danko na matakin abinci ya fi girma. Duk sun wuce 1000, kuma danko na masana'antu daban-daban ba iri ɗaya bane.
Saboda yawan amfaninsa.
Danko na sodium carboxymethyl cellulose yana shafar nauyin kwayoyin halitta, yawansa, zafin jiki da ƙimar pH, kuma an haɗa shi da ethyl ko carboxypropyl cellulose, gelatin, xanthan gum, carrageenan, locust bean gum, guar gum, agar, sodium alginate, pectin, gum arabic da sitaci kuma abubuwan da suka samo asali suna da kyakkyawan jituwa (watau tasirin haɗin gwiwa).
Idan ƙimar pH ta kai 7, tozartawar sinadarin sodium carboxymethyl cellulose shine mafi girma, kuma idan ƙimar pH ta kai 4~11, tana da ƙarfi sosai. Carboxymethylcellulose a cikin nau'in ƙarfe alkali da gishirin ammonium yana narkewa a cikin ruwa. ions na ƙarfe masu yawa Ca2+, Mg2+, Fe2+ na iya shafar dankonsa. Karafa masu nauyi kamar azurfa, barium, chromium ko Fe3+ na iya sa ya zube daga ruwan. Idan aka sarrafa yawan ions, kamar ƙara sinadarin citric acid mai narkewa, za a iya samun mafita mai ƙarfi, wanda zai haifar da ɗanko mai laushi ko mai tauri.
Sodium carboxymethyl cellulose wani nau'in cellulose ne na halitta, wanda galibi ana yin sa ne da auduga ko ɓangaren litattafan itace a matsayin kayan masarufi kuma ana iya haifar da amsawar etherification tare da monochloroacetic acid a ƙarƙashin yanayin alkaline.
Dangane da ƙayyadaddun kayan aiki da kuma maye gurbin hydrogen hydroxyl a cikin selulose D-glucose ta hanyar ƙungiyar carboxymethyl, ana samun mahaɗan polymer masu narkewa cikin ruwa tare da matakan maye gurbin daban-daban da rarraba nauyin kwayoyin halitta daban-daban.
Saboda sinadarin sodium carboxymethyl cellulose yana da halaye na musamman da kyau, ana amfani da shi sosai a masana'antar sinadarai ta yau da kullun, abinci da magunguna da sauran masana'antu.
Ɗaya daga cikin muhimman alamomin da ke nuna sinadarin sodium carboxymethyl cellulose shine dankowar sinadarin sodium carboxymethyl cellulose. Darajar dankowar yana da alaƙa da abubuwa daban-daban kamar yawan abu, zafin jiki da kuma yawan yankewa. Duk da haka, abubuwa kamar yawan abu, zafin jiki da kuma yawan yankewa sune abubuwan waje da ke shafar dankowar sinadarin sodium carboxymethyl cellulose.
Nauyin kwayoyin halittarsa da kuma rarraba kwayoyin halittarsa sune abubuwan da ke shafar dankowar sinadarin sodium carboxymethyl cellulose. Don sarrafa samarwa da haɓaka aikin samfura na sodium carboxymethyl cellulose, binciken nauyin kwayoyin halittarsa da rarraba nauyin kwayoyin halittarsa yana da matuƙar mahimmanci, yayin da dankowar da aka auna za ta iya taka rawa kawai.
Dokokin Newton a fannin ilimin halittar jiki, don Allah a karanta abubuwan da suka dace na "rheology" a fannin ilmin sunadarai na jiki, yana da wuya a bayyana shi a cikin jimla ɗaya ko biyu. Idan dole ne a faɗi haka: don maganin cmc mai narkewa kusa da ruwan Newtonian, matsin lamba na yankewa yana daidai da ƙimar gefen da aka yanke, kuma ana kiran ma'aunin daidaito tsakanin su da ma'aunin viscosity ko kinematic viscosity.
Danko yana samuwa ne daga ƙarfin da ke tsakanin sarƙoƙin ƙwayoyin cellulose, gami da ƙarfin wargajewa da haɗin hydrogen. Musamman ma, polymerization na abubuwan da suka samo asali daga cellulose ba tsari ne na layi ba amma tsari ne mai rassa da yawa. A cikin maganin, yawancin cellulose masu rassa da yawa suna haɗuwa don samar da tsarin hanyar sadarwa ta sarari. Yayin da tsarin ya taurare, haka nan ƙarfin da ke tsakanin sarƙoƙin ƙwayoyin halitta a cikin maganin da ya haifar.
Domin samar da kwarara a cikin ruwan da aka tace daga cikin abubuwan da suka samo asali daga cellulose, dole ne a shawo kan karfin da ke tsakanin sarkokin kwayoyin halitta, don haka mafita mai babban matakin polymerization tana buƙatar ƙarin ƙarfi don samar da kwarara. Don auna danko, ƙarfin da ke kan maganin CMC shine nauyi. A ƙarƙashin yanayin nauyi mai ɗorewa, tsarin sarkar maganin CMC tare da babban matakin polymerization yana da babban ƙarfi, kuma kwararar tana da jinkiri. Gudun da ke jinkirin yana nuna danko.
Danko na sodium carboxymethyl cellulose yana da alaƙa da nauyin kwayoyin halitta, kuma ba shi da alaƙa da matakin maye gurbin. Mafi girman matakin maye gurbin, mafi girman nauyin kwayoyin halitta, saboda nauyin kwayoyin halitta na rukunin carboxymethyl da aka maye gurbin ya fi girma fiye da rukunin hydroxyl na baya.
Gishirin sodium na cellulose carboxymethyl ether, wani anionic cellulose ether, fari ne ko fari mai kama da madara, foda ne mai kama da madara, mai yawan 0.5-0.7 g/cm3, kusan babu ƙamshi, babu ɗanɗano, kuma yana da hygroscopic. Yana da sauƙin warwatsewa a cikin ruwa don samar da maganin colloidal mai haske, kuma ba ya narkewa a cikin sinadarai masu narkewa kamar ethanol. pH na maganin ruwa na 1% shine 6.5 zuwa 8.5. Idan pH ya wuce 10 ko <5, danko na sodium carboxymethylcellulose yana raguwa sosai, kuma aikin shine mafi kyau lokacin da pH = 7.
Yana da daidaito a yanayin zafi. Danko yana ƙaruwa da sauri ƙasa da 20℃, kuma yana canzawa a hankali a 45℃. Dumama na dogon lokaci sama da 80℃ na iya lalata colloid kuma rage danko da aiki sosai. Yana narkewa cikin sauƙi a cikin ruwa, kuma maganin yana da haske; yana da ƙarfi sosai a cikin maganin alkaline, kuma yana da sauƙin hydrolyze idan akwai acid. Lokacin da ƙimar pH ta kasance 2-3, zai fashe.
Lokacin Saƙo: Nuwamba-07-2022