Za a iya haɗa HPMC da CMC
Methyl cellulosefari ne ko fari kamar foda mai kama da na fibrous ko granular; Ba shi da wari, ba shi da ɗanɗano. Wannan samfurin a cikin ruwa yana kumbura zuwa wani bayani mai haske ko ɗan tururi na colloidal; Ba ya narkewa a cikin cikakken ethanol, chloroform ko diethyl ether. Yana warwatse da sauri kuma yana kumbura a cikin ruwan zafi a 80-90 ℃, kuma yana narkewa da sauri bayan sanyaya. Maganin ruwa yana da ƙarfi sosai a zafin ɗaki, kuma ana iya yin gel a babban zafin jiki, kuma gel ɗin zai iya canzawa tare da maganin tare da zafin jiki.
Yana da matuƙar juriya ga ruwa, warwatsewa, mannewa, kauri, emulsification, riƙe ruwa da samuwar fim, da kuma hana shigar mai. Fim ɗin yana da matuƙar tauri, sassauci da kuma bayyanawa. Saboda ba shi da ionic, yana iya dacewa da sauran emulsifiers, amma yana da sauƙin cire gishiri, kuma maganin yana da karko a cikin kewayon PH2 - 12. Sodium carboxymethyl cellulose Wannan samfurin shine gishirin sodium na cellulose carboxymethyl ether, yana cikin anionic cellulose ether, fari ne ko fari mai kama da madara, mai yawa 0.5-0.7 g/cubic centimeter, kusan babu ƙamshi, babu ɗanɗano, yana da hygroscopic. Yana da sauƙin warwatsewa a cikin ruwa zuwa ruwan gelatin mai haske, ba ya narkewa a cikin ethanol da sauran sinadarai masu narkewa na halitta.
Idan pH na ruwan maganin ya kai 6.5 - 8.5, dankowar slurry yana raguwa sosai lokacin da pH ya kai >10 ko <5, kuma aikin shine mafi kyau lokacin da pH ya kai 7. Don kwanciyar hankali na zafi, danko yana tashi da sauri ƙasa da 20℃, yana canzawa a hankali a 45℃, kuma denaturation na colloid da danko da halayensa suna raguwa sosai lokacin da aka dumama shi na dogon lokaci sama da 80℃. Yana narkewa cikin sauƙi a cikin ruwa, maganin bayyane; Yana da ƙarfi sosai a cikin maganin alkaline, kuma yana da sauƙin hydrolyze idan akwai acid. Lokacin da ƙimar pH ta kai 2-3, ruwan sama zai faru, kuma ruwan sama zai faru a yanayin gishirin ƙarfe mai yawa. Hydroxypropyl methyl cellulose, wanda aka fi sani da hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether, shine zaɓin cellulose auduga mai tsabta sosai azaman kayan aiki, a ƙarƙashin yanayin alkaline ta hanyar etherification da shiri na musamman.
Yana narkewa a cikin ruwa da kuma mafi yawan polar C kuma ya dace da kashi ethanol/ruwa, propanol/ruwa, dichloroethane, da sauransu, ba ya narkewa a cikin diethyl ether, acetone, cikakken ethanol, kumburi a cikin ruwan sanyi zuwa wani bayani mai haske ko ɗan turbidized colloidal. Maganin ruwa yana da aikin saman, babban bayyananne da aiki mai dorewa.HPMCyana da siffa ta gel mai zafi. Bayan dumamawa, ruwan da samfurin ke samarwa yana samar da ruwan gel, sannan ya narke bayan sanyaya. Zafin gel na takamaiman bayanai daban-daban ya bambanta.
Lokacin Saƙo: Afrilu-25-2024