Hydroxypropyl methylcellulose (HPMC) bụ ihe dị mkpa nke nwere ọtụtụ ojiji na ụlọ ọrụ ọgwụ yana ụlọ ọrụ ndị ọzọ dịka nri, ihe ịchọ mma na owuwu. Ọchịchọ maka HPMC amụbaala nke ukwuu kemgbe ọtụtụ afọ n'ihi ihe pụrụ iche ya dịka ịka nká, ijikọ ihe, imepụta ihe nkiri na idobe mmiri. N'isiokwu a, anyị ga-atụle ụzọ mmepụta alkaline leaching nke hydroxypropyl methylcellulose (HPMC).
Usoro mmepụta nke hydroxypropyl methylcellulose (HPMC) nke na-eme ka alkali leaching bụ usoro nke cellulose na-emeghachi omume na propylene oxide na methyl chloride n'ihu alkali. Usoro a na-eme n'okpuru ọnọdụ okpomọkụ, nrụgide na oge ejiri mee ihe iji mepụta ngwaahịa HPMC dị elu.
Nzọụkwụ mbụ n'imepụta HPMC site na iji usoro mmepụta alkaline leaching bụ nkwadebe nke ihe ndị dị ndụ nke cellulose. A na-ebu ụzọ sachapụ cellulose site na iwepụ ihe ndị na-adịghị mma wee gbanwee ya ka ọ bụrụ alkali cellulose site na iji alkali dị ka sodium hydroxide gwọọ ya. Nzọụkwụ a dị oke mkpa n'ihi na ọ na-eme ka mmeghachi omume nke cellulose dịkwuo elu site na iji ihe ndị e ji eme ihe na-esote.
A na-eji ngwakọta propylene oxide na methyl chloride agwọ alkaline cellulose n'okpuru okpomọkụ na nrụgide a na-achịkwa. Mmeghachi omume dị n'etiti alkali cellulose na reagent na-eme ka e nwee ngwaahịa, nke bụ ngwakọta nke hydroxypropyl methylcellulose na ngwaahịa ndị ọzọ sitere na ya.
A na-asa ngwakọta ahụ, na-ewepụ ihe ruru unyi dịka ihe ndị na-adịghị arụ ọrụ na ihe ndị na-esi na ya apụta. A na-agbakọkwa mmiri ahụ site na ikpochapu iji nweta ngwaahịa HPMC dị ọcha nke ukwuu.
Usoro mmepụta alkali leaching nke hydroxypropyl methylcellulose (HPMC) nwere ọtụtụ uru ma e jiri ya tụnyere ụzọ mmepụta ndị ọzọ dịka etherification. Otu n'ime uru ya bụ na ọ bụ usoro na-adịghị emerụ gburugburu ebe obibi ahụ. N'adịghị ka usoro ndị ọzọ, usoro mmepụta alkali leaching anaghị eji ihe mgbaze halogenated nke na-emerụ gburugburu ebe obibi na ahụike mmadụ.
Uru ọzọ nke usoro a bụ mmepụta nke ngwaahịa HPMC dị ọcha nke ukwuu. Ọnọdụ mmeghachi omume a na-achịkwa na-eme ka ngwaahịa ikpeazụ dị mma ma dabara adaba maka ọtụtụ ojiji.
Ojiji nke HPMC n'ụlọ ọrụ ọgwụ dị oke mkpa maka mmepụta nke mbadamba, kapsụl na ụdị ọgwụ ndị ọzọ. Enwere ike iji HPMC dị ka ihe na-ejikọ, ihe na-emebi ihe, ihe na-eme ka ihe kpuchie, wdg. Ojiji nke HPMC na ngwa ndị a na-eme ka ụdị ọgwụ ahụ dị mma ma na-emezu ụkpụrụ achọrọ.
A na-ejikwa HPMC eme ihe dị ka ihe na-eme ka ihe sie ike, ihe na-eme ka ihe sie ike, na ihe na-eme ka ihe sie ike n'ụlọ ọrụ nri. Ojiji nke HPMC na ngwaahịa nri na-eme ka udidi, ịdị nro na ịdị mma na-adịgide adịgide.
N'ụlọ ọrụ owuwu ụlọ, a na-eji HPMC eme ihe dị ka ihe mgbakwunye simenti iji melite ike ọrụ, idobe mmiri na njikọ nke simenti. Ojiji nke HPMC na-eme ka ngwaahịa owuwu dị mma ma na-emezu ụkpụrụ achọrọ.
Na nchịkọta, usoro mmepụta alkali leaching nke hydroxypropyl methylcellulose (HPMC) bụ usoro maka imepụta ngwaahịa HPMC dị elu ma a na-ejikarị ya eme ihe n'ọtụtụ ụlọ ọrụ dịka ọgwụ, nri, na owuwu. Ojiji nke HPMC na ngwa ndị a na-eme ka ngwaahịa ahụ dị mma ma na-emezu ụkpụrụ achọrọ. Usoro mmepụta a na-emekwa ka gburugburu ebe obibi dị mma ma na-emepụta ngwaahịa HPMC dị ọcha.
Oge ozi: Sep-15-2023