Sodium Carboxymethyl Cellulose Viscosity

Dankowar sodium carboxymethyl cellulose kuma an raba shi zuwa maki da yawa bisa ga amfani daban-daban. A danko na wanka irin ne 10 ~ 70 (a kasa 100), babba iyaka na danko ne daga 200 ~ 1200 don gina ado da sauran masana'antu, da danko na abinci sa ya fi girma. Dukkansu sun fi 1000, kuma dankowar masana'antu daban-daban ba iri ɗaya ba ne.

Saboda yawan amfaninsa.
Danko na sodium carboxymethyl cellulose yana shafar danginsa na kwayoyin halitta, maida hankali, zafin jiki da darajar pH, kuma an haɗe shi da ethyl ko carboxypropyl cellulose, gelatin, xanthan danko, carrageenan, danko fari, guar danko, agar, sodium alginate. pectin, danko larabci da sitaci da abubuwan da suka samo asalinsa suna da dacewa mai kyau (watau tasirin daidaitawa).

Lokacin da darajar pH ta kasance 7, danko na sodium carboxymethyl cellulose bayani shine mafi girma, kuma lokacin da darajar pH ta kasance 4 ~ 11, yana da kwanciyar hankali. Carboxymethylcellulose a cikin nau'i na alkali karfe da ammonium salts ne mai narkewa a cikin ruwa. Divalent karfe ions Ca2+, Mg2+, Fe2+ na iya shafar danko. Karafa masu nauyi kamar su azurfa, barium, chromium ko Fe3+ na iya sa shi yin hazo daga mafita. Idan an sarrafa maida hankali na ions, kamar ƙari na wakili na chelating citric acid, za a iya samar da mafi kyawun bayani, wanda zai haifar da danko mai laushi ko mai wuya.

Sodium carboxymethyl cellulose wani nau'i ne na cellulose na halitta, wanda gabaɗaya an yi shi da linter na auduga ko ɓangaren litattafan almara na itace azaman albarkatun ƙasa kuma an sanya shi da amsawar etherification tare da monochloroacetic acid a ƙarƙashin yanayin alkaline.

Dangane da ƙayyadaddun kayan albarkatun ƙasa da maye gurbin hydroxyl hydrogen a cikin rukunin D-glucose cellulose ta ƙungiyar carboxymethyl, ana samun mahaɗan polymer mai narkewar ruwa tare da digiri daban-daban na maye gurbin da rarraba nauyin kwayoyin daban-daban.

Saboda sodium carboxymethyl cellulose yana da yawa musamman da kuma kyau kwarai halaye, shi ne yadu amfani a yau da kullum sunadarai masana'antu, abinci da magani da sauran masana'antu samar.

Ɗaya daga cikin mahimman alamun sodium carboxymethyl cellulose shine danko na sodium carboxymethyl cellulose. Darajar danko yana da alaƙa da abubuwa daban-daban kamar maida hankali, zazzabi da ƙimar ƙarfi. Duk da haka, abubuwa irin su maida hankali, zafin jiki da kuma raguwa sune abubuwan waje waɗanda ke shafar danko na sodium carboxymethyl cellulose.

Nauyinsa na kwayoyin halitta da rarraba kwayoyin halitta sune abubuwan ciki wadanda ke shafar danko na sodium carboxymethyl cellulose bayani. Don sarrafa sarrafawa da haɓaka aikin samfur na sodium carboxymethyl cellulose, bincika nauyin kwayoyin sa da rarraba nauyin kwayoyin halitta yana da mahimmancin mahimmancin mahimmanci, yayin da danko The ma'auni zai iya taka wani matsayi kawai.

Dokokin Newton a cikin rheology, da fatan za a karanta abubuwan da suka dace na “rheology” a cikin ilimin halittar jiki, yana da wuya a bayyana a cikin jumla ɗaya ko biyu. Idan dole ne ku faɗi haka: don maganin dilute na cmc kusa da ruwan Newton, damuwa mai ƙarfi yana daidai da ƙimar yankan, kuma madaidaicin ƙima tsakanin su ana kiransa da ɗanko coefficient ko kinematic danko.

Danko ya samo asali ne daga dakarun da ke tsakanin sassan kwayoyin halitta na cellulose, ciki har da sojojin watsawa da haɗin gwiwar hydrogen. Musamman ma, polymerization na abubuwan da suka samo asali na cellulose ba tsarin layi ba ne amma tsarin rassa da yawa. A cikin maganin, yawancin cellulose masu yawa da yawa suna haɗuwa don samar da tsarin cibiyar sadarwa na sararin samaniya. Matsakaicin tsarin, mafi girman ƙarfin da ke tsakanin sarƙoƙi na ƙwayoyin cuta a cikin sakamakon sakamakon.

Don samar da kwararar ruwa a cikin wani bayani mai tsauri na abubuwan da suka samo asali na cellulose, dole ne a shawo kan karfi tsakanin sassan kwayoyin halitta, don haka bayani tare da babban matsayi na polymerization yana buƙatar karfi mai girma don samar da kwarara. Don auna danko, ƙarfin da ke kan maganin CMC shine nauyi. A ƙarƙashin yanayin daɗaɗɗen nauyi na yau da kullun, tsarin sarkar na maganin CMC tare da babban digiri na polymerization yana da babban ƙarfi, kuma kwarara yana jinkirin. Jinkirin kwarara yana nuna danko.

Dankin sodium carboxymethyl cellulose yana da alaƙa da nauyin kwayoyin halitta, kuma ba shi da alaƙa da matakin maye gurbin. Mafi girman digiri na maye gurbin, mafi girman nauyin kwayoyin halitta, saboda nauyin kwayoyin halitta na ƙungiyar carboxymethyl da aka maye gurbin ya fi girma fiye da ƙungiyar hydroxyl da ta gabata.

Gishirin sodium na cellulose carboxymethyl ether, anionic cellulose ether, fari ne ko madara fari fibrous foda ko granule, tare da yawa na 0.5-0.7 g / cm3, kusan maras wari, m, da hygroscopic. Yana da sauƙin watsawa a cikin ruwa don samar da maganin colloidal na gaskiya, kuma ba shi da narkewa a cikin kaushi na kwayoyin halitta kamar ethanol. Matsakaicin pH na 1% mai ruwa shine 6.5 zuwa 8.5. Lokacin pH> 10 ko <5, danko na sodium carboxymethylcellulose yana raguwa sosai, kuma aikin shine mafi kyawun lokacin pH = 7.

Yana da karko mai zafi. Danko yana tashi 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 da sauƙin narkewa a cikin ruwa, kuma maganin yana da kyau; yana da matukar kwanciyar hankali a cikin bayani na alkaline, kuma yana da sauƙin yin amfani da ruwa a gaban acid. Lokacin da darajar pH ta kasance 2-3, zai yi hazo.