Hydroxypropyl methylcellulose (HPMC) bụ polima nwere ọtụtụ ihe dị iche iche, nke nwere ihe ndị na-egosi hydrophobic na hydrophilic, nke na-eme ka ọ pụrụ iche n'ọtụtụ ọrụ dị iche iche n'ụlọ ọrụ dị iche iche. Iji ghọta hydrophobic na hydrophilicity nke HPMC, anyị kwesịrị ịmụ banyere nhazi ya, ihe ndị dị na ya na ojiji ya nke ọma.
Nhazi nke hydroxypropyl methylcellulose:
HPMC bụ ihe sitere na cellulose, polima eke a na-ahụ na mgbidi sel osisi. Mgbanwe nke cellulose gụnyere iwebata hydroxypropyl na otu methyl n'ime azụ cellulose. Mgbanwe a na-agbanwe njirimara nke polima ahụ, na-enye ihe onwunwe pụrụ iche nke bara uru maka ọtụtụ ojiji.
Mmiri nke HPMC:
Mmiri:
HPMC nwere otu hydroxypropyl ma ọ bụ hydrophilic. Otu hydroxyl ndị a nwere njikọ dị elu maka molekul mmiri n'ihi njikọ hydrogen.
Otu Hydroxypropyl nwere ike ịmepụta njikọ hydrogen na molekul mmiri, na-eme ka HPMC na-agbaze n'ime mmiri ruo n'ókè ụfọdụ.
methyl:
Ọ bụ ezie na otu methyl na-eme ka molekul ahụ ghara ịdị ọcha, ọ naghị alụso hydrophilicity nke otu hydroxypropyl ọgụ.
Otu methyl anaghị enwe polar, mana ọnụnọ nke otu hydroxypropyl na-ekpebi njirimara hydrophilic.
Mmiri nke HPMC:
methyl:
Òtù methyl dị na HPMC na-ekpebi ruo n'ókè ụfọdụ na ọ bụ hydrophobious.
Ọ bụ ezie na ọ bụghị dị ka hydrophobic dịka ụfọdụ polymers sịntetik zuru oke, ọnụnọ nke otu methyl na-ebelata hydrophilicity zuru oke nke HPMC.
Njirimara nke imepụta ihe nkiri:
A maara HPMC maka ihe ndị na-emepụta fim ya, a na-ejikwa ya eme ihe n'ọgwụ na ịchọ mma. Mmiri na-eme ka ihe nkiri nchebe dị mma.
Mmekọrịta ya na ihe ndị na-abụghị polar:
N'ụfọdụ ngwa, HPMC nwere ike imekọrịta ihe na ihe ndị na-abụghị polar n'ihi na ọ na-enwe mmetụta hydrophobic. Ihe onwunwe a dị oke mkpa maka sistemụ nnyefe ọgwụ na ụlọ ọrụ ọgwụ.
Ngwa nke HPMC:
ọgwụ:
A na-ejikarị HPMC eme ihe n'ọgwụ dịka ihe na-ejikọ ihe, ihe nkiri, na ihe na-agbanwe viscosity. Ike ya na-eme ka mwepụta ọgwụ dị mfe.
A na-eji ya n'ụdị ọgwụ siri ike dịka mbadamba na kapsụl.
Ụlọ ọrụ ihe owuwu:
N'ọrụ owuwu ụlọ, a na-eji HPMC eme ihe na ngwaahịa ndị e ji simenti mee iji melite ọrụ, idobe mmiri na njikọta.
Mmiri mmiri na-enyere aka idobe mmiri, ebe mmiri mmiri na-enyere aka ime ka njikọ dị n'etiti mmiri na-adị mma.
ụlọ ọrụ nri:
A na-eji HPMC eme ihe dị ka ihe na-eme ka ihe sie ike ma na-eme ka ihe na-amị amị n'ụlọ ọrụ nri. Ọdịdị ya na-eme ka mmiri dị ọcha na-enyere aka ịmepụta gel kwụsiri ike ma na-achịkwa viscosity nke ngwaahịa nri.
ịchọ mma:
N'ihe gbasara ihe ịchọ mma, a na-eji HPMC eme ihe n'ihe dịka ude na ude n'ihi na ọ na-emepụta ihe nkiri ma na-eme ka ọ sie ike.
Mmiri mmiri na-eme ka akpụkpọ ahụ dị mma.
na ngwụcha:
HPMC bụ polima nke nwere hydrophilic na hydrophobic. Nhazi dị n'etiti otu hydroxypropyl na methyl n'ime nhazi ya na-enye ya ọtụtụ ihe pụrụ iche, na-enye ya ohere inwe ọtụtụ ojiji. Ịghọta ihe ndị a dị oke mkpa iji hazie HPMC ka ọ dabara na ojiji ụfọdụ n'ime ụlọ ọrụ dị iche iche, ebe a na-eji ikike HPMC iji mekọrịta ihe na mmiri na ihe ndị na-abụghị polar maka ọtụtụ ebumnuche.
Oge ozi: Disemba-15-2023