Hydroxypropyl methylcellulose (HPMC) bụ kemịkalụ kemịkalụ multifunctional nke a na-ejikarị n'ọhịa ụlọ ọrụ. Ọ bụ ether cellulose na-abụghị ionic, nke a na-enwetakarị site na mgbanwe kemịkalụ nke cellulose eke. Ihe mejupụtara ya bụ na methoxy na otu hydroxypropyl nọchiri otu hydroxyl dị na mkpụrụ ndụ cellulose. A na-eji HPMC eme ihe n'ọtụtụ ebe dị ka ihe owuwu, mkpuchi, ọgwụ, nri, na ihe ịchọ mma n'ihi njirimara anụ ahụ na kemịkal pụrụ iche.
1. Njirimara anụ ahụ na nke kemịkal
HPMC nwere ezigbo mmiri solubility ma nwee ike igbari ngwa ngwa na mmiri oyi ka ọ bụrụ ngwọta colloidal transperent ma ọ bụ ntakịrị milky. Ngwọta mmiri ya nwere nnukwu viscosity, na viscosity ya metụtara itinye uche, okpomọkụ na ogo nke nnọchi nke ngwọta. HPMC kwụsiri ike n'ọtụtụ pH ma nwee nnabata dị mma na acid na alkalis. Tụkwasị na nke ahụ, ọ nwere ọmarịcha ihe nkiri-akpụkọ, adhesion, njigide mmiri na ihe ndị na-emepụta ihe.
2. Usoro mmepụta
The mmepụta usoro nke HPMC tumadi gụnyere nzọụkwụ ndị dị otú ahụ dị ka alkali ọgwụgwọ, etherification mmeghachi omume na post-ọgwụgwọ. Nke mbụ, a na-edozi cellulose eke n'okpuru ọnọdụ alkaline iji mee ka ọ rụọ ọrụ, mgbe ahụ, etherified na methoxylating agents na hydroxypropylating agents, na n'ikpeazụ a na-enweta ngwaahịa ikpeazụ site na nkwụsịtụ, ịsacha, ihicha na ikpochapụ. N'oge mmepụta usoro, mmeghachi omume ọnọdụ dị ka okpomọkụ, nrụgide, mmeghachi omume oge na ego nke dị iche iche reagents ga-emetụta àgwà na arụmọrụ nke HPMC.
3. Ngwa ngwa
3.1 ụlọ ọrụ ihe owuwu
N'ebe a na-ewu ihe owuwu, a na-ejikarị HPMC eme ihe dị ka ihe na-esi ísì, ihe nkedo na ihe na-ejigide mmiri maka ngwa ngwa ciment. Ọ nwere ike melite arụmọrụ, ịrụ ọrụ ihe owuwu na ike njikọta nke ngwa agha, ebe ọ na-ebelata mbelata na mgbawa nke ngwa agha.
3.2 Ụlọ ọrụ mkpuchi
A na-eji HPMC eme ihe dị ka onye na-agbapụta, dispersant na stabilizer na ụlọ ọrụ mkpuchi. Ọ nwere ike imeziwanye ihe rheological nke mkpuchi ahụ, mee ka ọ dịkwuo mfe ịsa ahịhịa, ma mee ka adhesion na flatness nke mkpuchi.
3.3 ụlọ ọrụ ọgwụ na nri
N'ebe a na-emepụta ọgwụ, a na-eji HPMC mee ihe dị ka ihe na-emepụta ihe nkiri, onye na-ahapụ ya na stabilizer maka mbadamba ọgwụ. Ọ nwere ike ịchịkwa ọnụego ntọhapụ nke ọgwụ ọjọọ ma melite nkwụsi ike nke ọgwụ. N'ime ụlọ ọrụ nri, a na-eji HPMC dị ka ihe mgbakwunye iji gbasie ike, emulsify, kwụsịtụ na kwụsie ike nri.
3.4 Ụlọ ọrụ ịchọ mma
Na ịchọ mma, HPMC na-eji dị ka thickener, ihe nkiri mbụ na stabilizer. Ọ nwere ike welie udidi na ojiji ahụmịhe nke ịchọ mma, ma melite nkwụsi ike na moisturizing Njirimara nke ngwaahịa.
4. Uru na ihe ịma aka
Dị ka a functionally iche iche chemical, HPMC egosila ịrịba ngwa uru dị iche iche ulo oru ubi. Nke mbụ, a na-enweta ya site na cellulose eke ma nwee ezigbo biocompatibility na ihe nchebe gburugburu ebe obibi. Nke abụọ, HPMC nwere nnukwu kemịkalụ nkwụsi ike ma nwee ike ịnọgide na-arụ ọrụ ya n'okpuru ọnọdụ gburugburu ebe obibi dị iche iche. Otú ọ dị, usoro mmepụta nke HPMC dị mgbagwoju anya ma nwee ihe dị elu maka mmepụta ngwá ọrụ na nkà na ụzụ. Na mgbakwunye, ịdị mma na-agbanwe agbanwe na nkwụsi ike arụmọrụ n'etiti batches dị iche iche nke ngwaahịa bụkwa okwu ndị chọrọ nlebara anya.
5. Ọdịnihu mmepe mmepe
Site n'ọganihu nke sayensị na teknụzụ yana mgbanwe n'ọchịchọ ahịa, atụmanya ngwa nke HPMC ga-abawanye. N'ebe a na-ewu ihe owuwu, HPMC ga-arụ ọrụ dị ukwuu na ihe ụlọ ọhụrụ na ụlọ akwụkwọ ndụ akwụkwọ ndụ. N'ihe gbasara ọgwụ na nri, HPMC ga-eji ọtụtụ ebe ka ụkpụrụ ahụike na nchekwa na-akawanye mma. Na mgbakwunye, ka ndị mmadụ na-etinyekwu uche na nchekwa gburugburu ebe obibi na mmepe na-adigide, HPMC, dị ka ihe eji emeghari, ga-egosipụta uru gburugburu ebe obibi ya n'ọtụtụ mpaghara.
Hydroxypropyl methylcellulose (HPMC) aghọwo ihe dị mkpa kemịkalụ mmepụta n'ihi na ya pụrụ iche Njirimara na mbara ngwa ubi. N'ọdịnihu, na-aga n'ihu na nkà na ụzụ na-aga n'ihu na mgbasawanye nke ngwa ngwa, HPMC ga-arụ ọrụ dị mkpa n'ọtụtụ ubi, na-eweta ohere ọhụrụ na ihe ịma aka na mmepe nke ụlọ ọrụ dị iche iche.
Oge nzipu: Jul-31-2024