HPMC (hydroxypropyl methylcellulose) bụ ihe na-eme ka ihe sie ike ma na-eme ka ihe sie ike nke a na-ejikarị eme ihe n'ihe owuwu ụlọ, ihe mkpuchi, ọgwụ na nri. HPMC 15 cps pụtara na viscosity ya bụ 15 centipoise, nke bụ ọkwa viscosity dị ala.
1. Mee ka njupụta HPMC dịkwuo elu
Ụzọ kachasị kpọmkwem ma dị irè iji mee ka viscosity nke HPMC dịkwuo elu bụ ịbawanye ntinye ya na ngwọta ahụ. Mgbe oke nke HPMC na-abawanye, viscosity nke ngwọta ahụ ga-abawanyekwa. Isi ihe dị na usoro a bụ na HPMC na-eme ka viscosity nke ngwọta ahụ dịkwuo elu site n'ịmepụta nhazi netwọk atọ. Ka ọnụọgụgụ nke molekul HPMC dị na ngwọta ahụ na-abawanye, njupụta na ike nke nhazi netwọk ahụ ga-abawanyekwa, si otú a na-eme ka viscosity nke ngwọta ahụ dịkwuo elu. Agbanyeghị, enwere oke maka ịbawanye ntinye ahụ. Oke oke ntinye nke HPMC ga-eme ka mmiri nke ngwọta ahụ belata, ma nwee ike imetụta arụmọrụ ya na ngwa ụfọdụ, dị ka owuwu na ọrụ.
2. Na-achịkwa okpomọkụ nke ihe ngwọta ahụ
Okpomọkụ nwere nnukwu mmetụta na ike ịgbaze na ike ịgbaze nke HPMC. N'okpomọkụ dị ala, ike ịgbaze nke ngwọta HPMC dị elu; ebe n'okpomọkụ dị elu, ike ịgbaze nke ngwọta HPMC ga-ebelata. Ya mere, ibelata okpomọkụ nke ngwọta ahụ nke ọma n'oge ojiji nwere ike ime ka ike ịgbaze nke HPMC dịkwuo elu. A ghaghị ịmara na ike ịgbaze nke HPMC na ngwọta ahụ dị iche na okpomọkụ dị iche iche. Ọ na-adịkarị mfe ịgbasa na mmiri oyi, mana ọ na-ewe oge ụfọdụ iji gbazee kpamkpam. Ọ na-agbaze ngwa ngwa na mmiri ọkụ, mana ike ịgbaze dị ala.
3. Gbanwee uru pH nke ihe mgbaze ahụ
Ọbara ọbara nke HPMC na-emetụtakwa uru pH nke ngwọta ahụ. N'okpuru ọnọdụ na-anọpụ iche ma ọ bụ nke na-adịghị anọpụ iche, ọbara ọbara nke ngwọta HPMC kachasị elu. Ọ bụrụ na uru pH nke ngwọta ahụ ewepụghị na nke na-anọpụ iche, ọbara ọbara nwere ike ibelata. Ya mere, enwere ike ịbawanye ọbara ọbara nke ngwọta HPMC site na ịgbanwe uru pH nke ngwọta ahụ nke ọma (dịka ọmụmaatụ, site na ịgbakwunye ihe nchekwa ma ọ bụ ihe na-achịkwa acid-base). Agbanyeghị, n'ọrụ n'ezie, mgbanwe nke uru pH kwesịrị ịkpachara anya nke ukwuu, n'ihi na nnukwu mgbanwe nwere ike ibute mmebi HPMC ma ọ bụ mmebi arụmọrụ.
4. Họrọ ihe mgbaze kwesịrị ekwesị
Mmiri na viscosity nke HPMC na sistemụ mmiri dị iche iche dị iche. Ọ bụ ezie na a na-ejikarị HPMC eme ihe na mmiri mmiri, mgbakwunye nke ụfọdụ ihe mgbaze organic (dịka ethanol, isopropanol, wdg) ma ọ bụ nnu dị iche iche nwere ike ịgbanwe nhazi nke molekul HPMC, si otú a na-emetụta viscosity. Dịka ọmụmaatụ, obere ihe mgbaze organic nwere ike ibelata nnyonye anya nke molekul mmiri na HPMC, si otú a na-eme ka viscosity nke ngwọta ahụ dịkwuo elu. N'ọrụ ụfọdụ, ọ dị mkpa ịhọrọ ihe mgbaze organic kwesịrị ekwesị dịka ojiji ahụ si dị.
5. Jiri ihe enyemaka maka ime ka ihe sie ike
N'ọnọdụ ụfọdụ, enwere ike itinye ihe ndị ọzọ na-eme ka ọkpụrụkpụ sie ike na HPMC iji nweta mmetụta nke mmụba viscosity. Ihe ndị a na-ejikarị eme ka ọkpụrụkpụ sie ike gụnyere xanthan gum, guar gum, carbomer, wdg. Ihe mgbakwunye ndị a na-emekọ ihe na molekul HPMC iji mepụta gel ma ọ bụ nhazi netwọk siri ike, na-eme ka viscosity nke ngwọta ahụ dịkwuo elu. Dịka ọmụmaatụ, xanthan gum bụ polysaccharide eke nwere mmetụta siri ike nke stimulation. Mgbe ejiri ya na HPMC, ha abụọ nwere ike ịmepụta mmetụta synergistic ma mee ka viscosity nke sistemụ ahụ dịkwuo elu nke ukwuu.
6. Gbanwee ogo nke nnọchi nke HPMC
Ọdịiche dị n'etiti HPMC na ọ̀tụ̀tụ̀ mgbanwe nke otu methoxy na hydroxypropoxy ya. Ọdịiche nke mgbanwe na-emetụta ike ya na ọ̀tụ̀tụ̀ nnweta nke ngwọta ahụ. Site n'ịhọrọ HPMC nwere ọkwa mgbanwe dị iche iche, enwere ike ịgbanwe ọ̀tụ̀tụ̀ nnweta nke ngwọta ahụ. Ọ bụrụ na achọrọ ọ̀tụ̀tụ̀ nnweta nke HPMC dị elu, enwere ike ịhọrọ ngwaahịa nwere ọ̀tụ̀tụ̀ nnweta nke methoxy dị elu, n'ihi na ka ọdịnaya methoxy dị elu, otú ahụ ka ọ̀tụ̀tụ̀ nnweta nke HPMC si esi ike, ọ̀tụ̀tụ̀ nnweta nke methoxy na-esikwu ike, ọ̀tụ̀tụ̀ nnweta nke methoxy mgbe a gbasasịrị ya dịkwa elu.
7. Gbatịa oge mgbasa ahụ
Oge HPMC ga-agbaze ga-emetụtakwa viscosity ya. Ọ bụrụ na HPMC agbazeghị kpamkpam, viscosity nke ngwọta ahụ agaghị eru ọnọdụ kwesịrị ekwesị. Ya mere, ịgbatị oge ịgbaze nke HPMC n'ime mmiri nke ọma iji hụ na HPMC nwere mmiri zuru oke nwere ike ime ka viscosity nke ngwọta ya dịkwuo mma. Karịsịa mgbe ọ na-agbaze na obere okpomọkụ, usoro ịgbaze nke HPMC nwere ike ịdị nwayọ, ịgbatị oge ahụ dịkwa oke mkpa.
8. Gbanwee ọnọdụ ịkpụcha
Ọdịiche dị n'etiti HPMC na ike ịkpụcha ya mgbe ejiri ya. N'ọnọdụ nkụcha dị elu, nkụcha nke ngwọta HPMC ga-ebelata nwa oge, mana mgbe nkụcha ahụ kwụsịrị, nkụcha ahụ ga-agbake. Maka usoro ndị chọrọ mmụba nkọcha, enwere ike ibelata ike nkụcha nke a na-etinye na ngwọta ahụ, ma ọ bụ enwere ike ịrụ ọrụ ya n'okpuru ọnọdụ nkụcha dị ala iji nọgide na-enwe nkọcha dị elu.
9. Họrọ ibu molekul kwesịrị ekwesị
Ibu molekul nke HPMC na-emetụta kpọmkwem viscosity ya. HPMC nwere ibu molekul buru ibu na-emepụta nhazi netwọk buru ibu na ngwọta ahụ, na-ebute viscosity dị elu. Ọ bụrụ na ịchọrọ ịbawanye viscosity nke HPMC, ị nwere ike ịhọrọ ngwaahịa HPMC nwere ibu molekul dị elu. Ọ bụ ezie na HPMC 15 cps bụ ngwaahịa viscosity dị ala, enwere ike ịbawanye viscosity site na ịhọrọ ụdị dị elu nke molekul nke otu ngwaahịa ahụ.
10. Tụlee ihe ndị metụtara gburugburu ebe obibi
Ihe ndị dị na gburugburu ebe obibi dịka iru mmiri na nrụgide nwekwara ike inwe mmetụta ụfọdụ na viscosity nke ngwọta HPMC. N'ebe oke iru mmiri dị, HPMC nwere ike ịmịkọrọ mmiri site na ikuku, na-eme ka viscosity ya belata. Iji zere nke a, enwere ike ijikwa ọnọdụ gburugburu ebe obibi nke ebe mmepụta ma ọ bụ ojiji nke ọma iji mee ka gburugburu ebe obibi kpọọ nkụ ma nwee nrụgide kwesịrị ekwesị iji nọgide na-enwe viscosity nke ngwọta HPMC.
E nwere ọtụtụ ụzọ isi mee ka mmiri HPMC 15 cps dịkwuo mma, gụnyere ịbawanye njupụta, ijikwa okpomọkụ, ịgbanwe pH, iji ihe enyemaka ịkpụ, ịhọrọ oke nnọchi kwesịrị ekwesị na ibu molekul, wdg. Usoro a kapịrị ọnụ a ga-ahọrọ dabere na ọnọdụ ngwa na ihe achọrọ maka usoro. N'ọrụ n'ezie, ọ dị mkpa ịtụle ọtụtụ ihe nke ọma ma mee mgbanwe na njikarịcha ezi uche dị na ya iji hụ na ngwọta HPMC kacha mma na ngwa ndị akọwapụtara.
Oge ozi: Ọktoba-16-2024