Iji tụnyere CMC (carboxymethylcellulose) na HPMC (hydroxypropylmethylcellulose), anyị kwesịrị ịghọta ihe onwunwe ha, ngwa, uru, adịghị ike, na ihe nwere ike iji mee ihe. A na-eji ihe ndị sitere na cellulose abụọ eme ihe n'ọtụtụ ụlọ ọrụ dị iche iche, gụnyere ọgwụ, nri, ihe ịchọ mma na ihe owuwu. Onye ọ bụla nwere ihe pụrụ iche na-eme ka ha dị mma 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 mkpụrụ ndụ cellulose na-agbaze mmiri na-emepụta site na mmeghachi omume nke cellulose na chloroacetic acid. O nwere otu carboxymethyl (-CH2-COOH) jikọtara na ụfọdụ hydroxyl otu nke glucopyranose monomers nke mebere ọkpụkpụ azụ cellulose.
HPMC (hydroxypropyl methylcellulose): HPMC bụkwa ihe na-emepụta mmiri na-emepụta cellulose site na ịgwọ cellulose na propylene oxide na methyl chloride. Ọ nwere hydroxypropyl na methoxy dị iche iche jikọtara na ọkpụkpụ azụ cellulose.
2. Solubility:
CMC: Soluble nke ukwuu na mmiri, na-akpụ a transperent, viscous ngwọta. Ọ na-egosipụta omume mgbaba pseudoplastic, nke pụtara na viscosity ya na-ebelata n'okpuru nrụgide siri ike.
HPMC: Nakwa soluble na mmiri, na-akpụ a ubé viscous ngwọta karịa CMC. Ọ na-egosipụtakwa omume pseudoplastic.
3.Rheological Njirimara:
CMC: Na-egosiputa omume mkparị nke shii, nke pụtara na viscosity ya na-ebelata site na ọnụ ọgụgụ shear na-abawanye. Ngwongwo a na-eme ka ọ dị mma maka ngwa ebe achọrọ ịkwa akwa mana ihe ngwọta kwesịrị ịdị mfe n'okpuru shear, dị ka agba, detergents na ọgwụ.
HPMC: na-egosipụta omume rheological yiri nke ahụ na CMC, mana viscosity ya na-adịkarị elu na obere mkpokọta. Ọ nwere ihe ndị na-emepụta ihe nkiri dị mma, na-eme ka ọ dị mma maka ngwa ndị dị ka mkpuchi, adhesives na usoro mmepụta ọgwụ na-achịkwa.
4. Nkwụsi ike:
CMC: kwụsiri ike n'ozuzu oke pH na okpomọkụ. Ọ nwere ike ịnabata ọkwa electrolytes na-agafeghị oke.
HPMC: kwụsiri ike karịa CMC n'okpuru ọnọdụ acidic, mana enwere ike ịnweta hydrolysis n'okpuru ọnọdụ alkaline. Ọ na-enwekwa mmetụta maka cations divalent, nke nwere ike ibute gelation ma ọ bụ mmiri ozuzo.
5. Ngwa:
CMC: a na-ejikarị dị ka thickener, stabilizer na onye na-ejigide mmiri na nri (dị ka ice cream, sauce), ọgwụ (dị ka mbadamba nkume, nkwusioru) na ịchọ mma (dị ka ude, ude mmiri) ụlọ ọrụ.
HPMC: A na-ejikarị eme ihe n'ihe owuwu (dịka ọmụmaatụ, tile tile, plasta, mortar), ọgwụ (dịka ọmụmaatụ, mbadamba ihe a na-achịkwa, nkwadebe anya), na ihe ịchọ mma (dịka ọmụmaatụ, anya mmiri, ngwaahịa nlekọta anụ ahụ).
6. Nsi na nchekwa:
CMC: Ndị ụlọ ọrụ na-ahụ maka njikwa amatara dị ka nchekwa (GRAS) mgbe ejiri ya n'ime oke akọwapụtara na nri na ngwa ọgwụ. Ọ bụ biodegradable na-adịghị egbu egbu.
HPMC: A na-ahụkwa na ọ dị mma maka oriri n'ime oke akwadoro. Ọ bụ ihe dakọtara ma jiri ya mee ihe n'ọhịa ọgwụ dị ka ihe ntọhapụ a na-achịkwa yana ihe nkedo mbadamba.
7. Ọnụ na nnweta:
CMC: Na-adịkarị ọnụ ahịa karịa HPMC. Ọ dị mfe ịnweta site na ndị na-ebubata ngwaahịa dị iche iche gburugburu ụwa.
HPMC: Ọ dị ntakịrị ọnụ karịa n'ihi usoro mmepụta ya yana mgbe ụfọdụ ọnweta dị ntakịrị site na ụfọdụ ndị na-ebubata ya.
8. Mmetụta gburugburu:
CMC: Biodegradable, nke sitere na akụrụngwa emeghari ohuru (cellulose). A na-ewere ya dị ka enyi na gburugburu ebe obibi.
HPMC: Nakwa biodegradable na ewepụtara na cellulose, otú ahụ dịkwa nnọọ na gburugburu ebe obibi enyi na enyi.
Ma CMC na HPMC nwere ihe pụrụ iche na-eme ka ha bụrụ ihe mgbakwunye bara uru n'ọtụtụ ụlọ ọrụ. Nhọrọ n'etiti ha na-adabere na ngwa ngwa chọrọ dị ka solubility, viscosity, nkwụsi ike na echiche ego. N'ozuzu, CMC nwere ike ịhọrọ n'ihi ọnụ ala ya dị ala, nkwụsi ike pH sara mbara, na adabara maka nri na ngwa ịchọ mma. N'aka nke ọzọ, HPMC nwere ike ịkwado maka viscosity ya dị elu, ihe na-emepụta ihe nkiri kachasị mma, yana ngwa na ọgwụ na ihe owuwu. N'ikpeazụ, nhọrọ kwesịrị ịdabere na nleba anya zuru oke nke ihe ndị a yana ndakọrịta na ihe eji eme ihe.
Oge nzipu: Feb-21-2024