Methylcellulose (MC) na Hydroxypropyl Methylcellulose (HPMC) bụ ndị a na-ejikarị eme ihe na-emepụta cellulose na-edozi mmiri, nke a na-ejikarị eme ihe na nri, ọgwụ, ihe owuwu na nlekọta onwe onye.
1. Ọdịdị dị iche iche
Methylcellulose (MC):
Methylcellulose bụ cellulose ewepụtara site na iji methyl (-OCH3) dochie akụkụ nke hydroxyl otu cellulose.
Usoro kemịkalụ ya dịtụ mfe, ọkachasị nke skeleton cellulose na ihe mgbakwunye methyl mejupụtara.
Hydroxypropyl Methylcellulose (HPMC):
A na-etolite HPMC site na iwebata ihe mgbakwunye hydroxypropyl (-C3H7O) na ndabere nke methylcellulose.
Mgbanwe nhazi a na-eme ka ọ dịkwuo mma n'ihe gbasara solubility na njirimara viscosity na mmiri.
2. Solubility
Methylcellulose na-agbaze ngwa ngwa na mmiri oyi, mana ọ naghị adị mfe mgbaze na mmiri ọkụ, ma na-egosipụtakarị ọdịdị colloidal. Nke a na-eme ka akụrụngwa MC nwere ike gbanwee mgbe okpomọkụ na-ebili.
Hydroxypropyl Methylcellulose nwere ike ịgbaze nke ọma na ma mmiri oyi na mmiri ọkụ, na solubility ya dị mma karịa nke methylcellulose. HPMC ka nwere ike idowe mmiri solubility ya na oke okpomọkụ ma dabara maka ngwa ndị chọrọ ọgwụgwọ okpomọkụ.
3. Njirimara viscosity
Methylcellulose nwere viscosity dị ntakịrị ma dabara adaba maka nhazi nke anaghị achọ nnukwu viscosity.
Hydroxypropyl methylcellulose nwere viscosity dị elu ma enwere ike ịhazi ya site n'ịgbanwe ịdị arọ molekụla ya na ogo nke nnọchi ya. Nke a na-eme ka HPMC dịkwuo mfe n'ụdị ngwa dị iche iche, karịsịa na ụlọ ọrụ mmepụta ihe na ọgwụ.
4. Mpaghara ngwa
A na-ejikarị Methylcellulose eme ihe na ụlọ ọrụ nri dị ka onye na-agba ume, emulsifier na stabilizer, a na-ejikwa ya na ụfọdụ ngwaahịa ọgwụ dịka ihe mkpuchi maka ọgwụ.
Hydroxypropyl methylcellulose nwere ngwa sara mbara. Na mgbakwunye na nri na ọgwụ, a na-ejikwa ya n'ọtụtụ ebe n'ihe eji ewu ụlọ (dị ka ngwa ngwa akọrọ) na ngwaahịa nlekọta onwe onye (dị ka ude akpụkpọ anụ na shampoos) n'ihi ọdịdị dị mma na-emepụta ihe nkiri na njide.
5. Njirimara arụmọrụ
Methylcellulose nwere ezigbo njide mmiri na ihe na-emepụta ihe nkiri na a na-ejikarị ya eme ihe na ngwaahịa ndị kwesịrị ijigide mmiri.
Hydroxypropyl methylcellulose nwere ezigbo nguzogide okpomọkụ na ihe ndị na-emepụta ihe nkiri dị mma na mgbakwunye na njide mmiri, ya mere ọ na-arụ ọrụ nke ọma na ngwa na ọgwụgwọ okpomọkụ dị elu.
6. Nchekwa na nkwụsi ike
Ha abụọ bụ ihe mgbakwunye nri anaghị egbu egbu ma a na-ewerekarị na ọ dị mma. Agbanyeghị, HPMC nwere ike ịka mma na ụfọdụ ngwa n'ihi nkwụsi ike ya na ndakọrịta ya ka mma.
Methylcellulose na hydroxypropyl methylcellulose dị iche iche na nhazi kemịkalụ, solubility, njirimara viscosity na mpaghara ngwa. Nhọrọ nke ihe kwesịrị ekwesị na-adaberekarị na mkpa nke ngwa ngwa. MC dabara adaba maka ngwa ngwa ngwa ngwa ngwa na nkwụsi ike, ebe HPMC dabara adaba maka ngwa ụlọ ọrụ dị mgbagwoju anya na ngwa azụmaahịa n'ihi ike ngbanwe ya dị elu na viscosity.
Oge nzipu: Ọktoba 21-2024