Iji tụnyere CMC (carboxymethylcellulose) na HPMC (hydroxypropylmethylcellulose), anyị kwesịrị ịghọta ihe onwunwe ha, ojiji ha, uru ha, ọghọm ha, na ihe ndị nwere ike iji ha. A na-eji ihe abụọ a na-emepụta cellulose eme ihe n'ọtụtụ ụlọ ọrụ dị iche iche, gụnyere ọgwụ, nri, ihe ịchọ mma na ihe owuwu. Nke ọ bụla nwere ihe pụrụ iche nke na-eme ka ha dabara adaba maka ebumnuche dị iche iche. Ka anyị mee ntụnyere zuru oke iji hụ nke ka mma n'ọnọdụ dị iche iche.
1. Nkọwa na nhazi:
CMC (carboxymethylcellulose): CMC bụ ihe sitere na cellulose na-agbaze mmiri nke sitere na mmeghachi omume nke cellulose na chloroacetic acid. O nwere otu carboxymethyl (-CH2-COOH) nke ejikọtara na ụfọdụ otu hydroxyl nke monomers glucopyranose nke mejupụtara azụ cellulose.
HPMC (hydroxypropyl methylcellulose): HPMC bụkwa ihe sitere na cellulose na-agbaze mmiri nke a na-emepụta site na iji propylene oxide na methyl chloride gwọọ cellulose. O nwere hydroxypropyl na otu methoxy nke ejikọtara na azụ cellulose.
2. Mmiri na-agbaze:
CMC: Ọ na-agbaze nke ukwuu n'ime mmiri, na-emepụta mmiri doro anya ma na-agbaze agbaze. Ọ na-egosipụta omume mmiri pseudoplastic, nke pụtara na viscosity ya na-ebelata mgbe nrụgide shear gasịrị.
HPMC: A na-agbazekwa ya na mmiri, na-emepụta mmiri ara ehi dị ntakịrị karịa CMC. Ọ na-egosipụtakwa omume pseudoplastic.
3. Njirimara rheological:
CMC: Na-egosi àgwà ịchacha ákwà, nke pụtara na ọ na-ebelata ka ọnụego ịchacha ákwà na-abawanye. Ihe a na-eme ka ọ dị mma maka iji ya ebe achọrọ ịchacha ákwà mana ngwọta ahụ kwesịrị ịdị mfe ịgbasa n'okpuru ịchacha ákwà, dịka agba, ihe nhicha na ọgwụ.
HPMC: na-egosipụta àgwà rheological yiri nke CMC, mana viscosity ya na-adịkarị elu na obere njupụta. Ọ nwere àgwà ka mma nke imepụta ihe nkiri, na-eme ka ọ dabara adaba maka ojiji dịka mkpuchi, ihe nrapado na usoro ọgwụ a na-achịkwa.
4. Ịkwụsi ike:
CMC: Ọ na-adịgide n'ọtụtụ pH na okpomọkụ dị iche iche. Ọ nwere ike ịnagide ọkwa elektrọl dị ala.
HPMC: Ọ na-adị mma karịa CMC n'ọnọdụ acidic, mana ọ nwere ike ịgafe mmiri n'okpuru ọnọdụ alkaline. Ọ na-enwekwa mmetụta na cations divalent, nke nwere ike ibute gelation ma ọ bụ mmiri ozuzo.
5. Ngwa:
CMC: a na-ejikarị ya eme ihe dị ka ihe na-eme ka ihe sie ike, ihe na-eme ka mmiri sie ike, na ihe na-ejide mmiri n'ime nri (dịka ice cream, ofe), ọgwụ (dịka mbadamba, ihe nkwusioru) na ihe ịchọ mma (dịka ude, ude mmiri).
HPMC: A na-ejikarị ya eme ihe owuwu (dịka ọmụmaatụ, ihe mmado taịlị simenti, plasta, ngwa agha), ọgwụ (dịka ọmụmaatụ, mbadamba ihe eji achịkwa, ihe eji eme anya), na ihe ịchọ mma (dịka ọmụmaatụ, mmiri anya, ngwaahịa nlekọta akpụkpọ ahụ).
6. Nsí na nchekwa:
CMC: Ndị ọrụ iwu na-ahụkarị na ọ dị ka ihe nchekwa (GRAS) mgbe ejiri ya n'ime oke akọwapụtara n'ihe gbasara nri na ọgwụ. Ọ na-ere ere ma na-anaghị egbu egbu.
HPMC: A na-ewerekwa ya dị ka ihe dị mma maka oriri n'ime oke akwadoro. Ọ dabara nke ọma ma ejiri ya mee ihe n'ọtụtụ ebe n'ọgwụ dịka ihe na-enye mwepụta na ihe na-ejikọ mbadamba.
7. Ọnụ ego na nnweta:
CMC: Ọ na-adịkarị ọnụ ala karịa HPMC. Ọ dị mfe ịnweta ya site n'aka ndị na-ebubata ya n'ụwa niile.
HPMC: Ọ dị ntakịrị ọnụ karịa n'ihi usoro mmepụta ya na mgbe ụfọdụ obere nnyefe sitere n'aka ụfọdụ ndị na-ebubata ya.
8. Mmetụta gburugburu ebe obibi:
CMC: A na-ere ere, nke sitere na ihe ndị a na-emegharị emegharị (cellulose). A na-ewere ya dị ka ihe na-adịghị emebi gburugburu ebe obibi.
HPMC: A na-erekwa ya nke ọma ma si na cellulose nweta ya, ọ na-emekwa ka ọ dị mma maka gburugburu ebe obibi.
Ma CMC na HPMC nwere ihe pụrụ iche nke na-eme ka ha bụrụ ihe mgbakwunye bara uru n'ọtụtụ ụlọ ọrụ. Nhọrọ dị n'etiti ha dabere na ihe achọrọ maka ngwa dịka ịgbaze, viscosity, nkwụsi ike na ịtụle ọnụ ahịa. N'ozuzu, enwere ike ịhọrọ CMC n'ihi ọnụ ahịa ya dị ala, nkwụsi ike pH sara mbara, na ịdị mma maka ngwa nri na ịchọ mma. N'aka nke ọzọ, HPMC nwere ike ịbụ ihe a na-ahọrọ maka viscosity dị elu ya, ihe ndị na-emepụta fim ka mma, na ngwa na ọgwụ na ihe owuwu. N'ikpeazụ, nhọrọ kwesịrị ịdabere na ntụle zuru oke nke ihe ndị a na ndakọrịta na ojiji ezubere.
Oge ozi: Febụwarị-21-2024