Maka okpomọkụ jel nke hydroxypropyl methyl celluloseHPMC, ọtụtụ ndị na-eji ya anaghị elebara okpomọkụ gel nke hydroxypropyl methyl cellulose anya. Ugbu a, a na-ahụkarị hydroxypropyl methyl cellulose dịka viscosity ya si dị, mana maka ụfọdụ gburugburu pụrụ iche na ụlọ ọrụ pụrụ iche, ọ bụghị naanị igosipụta viscosity nke ngwaahịa ahụ. Ihe na-esonụ na-egosi obere okpomọkụ gel nke hydroxypropyl methylcellulose.
Ọdịnaya nke otu methoxy metụtara kpọmkwem na ogo dialysis nke cellulose, enwere ike ịgbanwe ọdịnaya nke otu methoxy site na ijikwa usoro, okpomọkụ mmeghachi omume na oge mmeghachi omume. N'otu oge ahụ, ogo carboxylation na-emetụta ogo nnọchi nke hydroxyethyl ma ọ bụ hydroxypropyl. Ya mere, njigide mmiri nke cellulose ethers nwere oke okpomọkụ gel na-aka njọ karịa. Usoro mmepụta a kwesịrị ịchọpụta, yabụ ọ bụghị na ọdịnaya nke otu methoxy dị ala, ọnụ ahịa mmepụta nke cellulose ether dị ala, n'ụzọ megidere nke ahụ, ọnụ ahịa ya ga-adị elu.
A na-ekpebi okpomọkụ gel site na otu methoxy, otu hydroxypropoxy na-ekpebikwa njigide mmiri. E nwere naanị otu atọ a na-agbanwe agbanwe na cellulose. Chọta okpomọkụ kwesịrị ekwesị maka ojiji gị, nchekwa mmiri kwesịrị ekwesị, wee chọpụta ụdị cellulose a.
Okpomọkụ gel bụ ihe dị mkpa maka ijicellulose etherMgbe okpomọkụ gburugburu gafere okpomọkụ jel, cellulose ether ga-ekewapụ onwe ya na mmiri ma ghara inwe ike ijide mmiri. Okpomọkụ jel nke cellulose ether dị n'ahịa nwere ike igbo mkpa gburugburu ebe a na-eji moto ahụ (ma e wezụga maka gburugburu pụrụ iche). Ndị nrụpụta ga-eburu nke a n'uche.
Oge ozi: Eprel-26-2024