Banyere gel okpomọkụ nke hydroxypropyl methyl celluloseHPMC, ọtụtụ ndị ọrụ anaghị ege ntị na gel okpomọkụ nke hydroxypropyl methyl cellulose. Ugbu a hydroxypropyl methyl cellulose bụ ndị a na-ahụkarị dị ka viscosity ya si dị, mana maka ụfọdụ gburugburu pụrụ iche na ụlọ ọrụ pụrụ iche, ezughị ezu iji gosipụta viscosity nke ngwaahịa ahụ. Ihe na-esonụ na-ewebata obere oge jel okpomọkụ nke hydroxypropyl methylcellulose.
Ọdịnaya nke methoxy otu na-emetụta kpọmkwem ogo dialysis nke cellulose, na ọdịnaya nke methoxy otu nwere ike gbanwee site na ịchịkwa usoro, mmeghachi omume okpomọkụ na oge mmeghachi omume. N'otu oge ahụ, ogo nke carboxylation na-emetụta ogo nke nnọchi nke hydroxyethyl ma ọ bụ hydroxypropyl. Ya mere, njigide mmiri nke cellulose ethers na elu gel okpomọkụ na-adịkarị ntakịrị njọ. Ọ dị mkpa ka a nyochaa usoro mmepụta a, n'ihi ya, ọ bụghị na ọdịnaya nke methoxy Group dị ala, ọnụ ahịa mmepụta nke cellulose ether dị ala, n'ụzọ megidere nke ahụ, ọnụahịa ya ga-adị elu.
A na-ekpebi ọnọdụ okpomọkụ gel site na otu methoxy, na njide mmiri na-ekpebi otu hydroxypropoxy. Enwere naanị otu atọ nwere ike dochie anya na cellulose. Chọta ọnọdụ okpomọkụ gị kwesịrị ekwesị, njide mmiri kwesịrị ekwesị, wee chọpụta ihe nlereanya nke cellulose a.
The jel okpomọkụ bụ ihe dị oké egwu n'ihi na ngwa nkecellulose ether. Mgbe ọnọdụ okpomọkụ dị elu karịa gel okpomọkụ, cellulose ether ga-ekewapụ na mmiri ma tụfuo njide mmiri. The gel okpomọkụ nke cellulose ether na ahịa nwere ike ihu ọma gboo mkpa nke gburugburu ebe obibi nke ngwa agha na-eji (ma e wezụga maka pụrụ iche gburugburu). Ndị nrụpụta ga-echebara nke a echiche.
Oge nzipu: Eprel-26-2024