Ọdịiche dị n'etiti CMC na HPMC

Carboxymethyl cellulose (CMC) na hydroxypropyl methylcellulose (HPMC) bụ ụdị abụọ nke cellulose mmepụta nke a na-ejikarị na nri, ọgwụ na ụlọ ọrụ nlekọta onwe onye. Ọ bụ ezie na a na-eji ha abụọ eme ihe dị ka thickeners, stabilizers, na emulsifiers, e nwere ụfọdụ ọdịiche dị mkpa n'etiti CMC na HPMC na-eme ka ha dị mma maka ngwa dị iche iche. N'isiokwu a, anyị ga-atụle ndịiche dị n'etiti CMC na HPMC n'ihe gbasara usoro kemịkalụ, ihe onwunwe, ojiji, na nchekwa ha.

1. Ọdịdị Chemical

CMC bụ polymer soluble mmiri nke sitere na cellulose, nke bụ polymer eke dị na mgbidi cell osisi. Usoro kemịkalụ nke CMC bụ ndị otu carboxymethyl (-CH2-COOH) na-ejikọta na ọkpụkpụ azụ cellulose. Ogo nke nnọchi (DS) nke CMC na-ezo aka na ọnụọgụ nke otu carboxymethyl dị ugbu a kwa otu anhydroglucose (AGU) nke ọkpụkpụ azụ cellulose. DS nke CMC nwere ike si na 0.2 ruo 1.5, yana ụkpụrụ DS dị elu na-egosi ogo ngbanwe dị elu.

HPMC bụkwa polymer soluble mmiri nke sitere na cellulose. Agbanyeghị, n'adịghị ka CMC, HPMC na-eji hydroxypropyl na otu methyl gbanwetụrụ. A na-ejikọta ìgwè hydroxypropyl (-OCH2CHOHCH3) na ìgwè hydroxyl na azụ azụ cellulose, ebe ndị methyl (-CH3) na-ejikọta na ìgwè hydroxypropyl. Ogo nke nnọchi nke HPMC na-ezo aka na ọnụọgụ hydroxypropyl na methyl dị ugbu a kwa AGU nke ọkpụkpụ azụ cellulose. DS nke HPMC nwere ike si na 0.1 ruo 3.0, yana ụkpụrụ DS dị elu na-egosi ogo ngbanwe dị elu.

2. Njirimara

CMC na HPMC nwere ihe dị iche iche na-eme ka ha dị mma maka ngwa dị iche iche. Ụfọdụ n'ime ihe ndị bụ isi nke CMC na HPMC ka edepụtara n'okpuru:

a. Solubility: CMC bụ nke ukwuu soluble na mmiri na-emepụta doro anya, viscous ngwọta. HPMC bụkwa nke ukwuu soluble na mmiri, ma ngwọta nwere ike ịbụ turbid dabere n'ókè nke nnọchi.

b. Rheology: CMC bụ ihe pseudoplastic, nke pụtara na ọ na-egosipụta àgwà mkparị. Nke a pụtara na viscosity nke CMC na-ebelata ka ọnụ ọgụgụ shear na-abawanye. N'aka nke ọzọ, HPMC bụ ihe Newtonian, nke pụtara na viscosity ya na-anọgide na-adịgide adịgide n'agbanyeghị ọnụ ọgụgụ shear.

c. Ihe na-emepụta ihe nkiri: CMC nwere ezigbo ihe na-emepụta ihe nkiri, nke na-eme ka ọ dị mma maka iji mkpuchi na ihe nkiri. HPMC nwekwara ihe ndị na-emepụta ihe nkiri, mana ihe nkiri ahụ nwere ike na-agbakasị ma na-enwekarị mgbawa.

d. Nkwụsi ike: CMC kwụsiri ike n'ọtụtụ pH na ọnọdụ okpomọkụ. HPMC kwụsiri ike karịa oke pH, mana oke okpomọkụ nwere ike imetụta nkwụsi ike ya.

3. Na-eji

A na-eji CMC na HPMC n'ọtụtụ ngwa na nri, ọgwụ na ụlọ ọrụ nlekọta onwe onye. Ụfọdụ n'ime isi ojiji nke CMC na HPMC ka edepụtara n'okpuru:

a. Ụlọ ọrụ nri: A na-ejikarị CMC eme ihe dị ka ihe na-agbapụta, stabilizer, na emulsifier na ngwaahịa nri dị ka ice cream, uwe salad, na ngwa nri. A na-ejikwa HPMC dị ka thickener na stabilizer na ngwaahịa nri, mana a na-ejikarị ya dị ka ihe mkpuchi maka ngwaahịa confectionery dị ka candies gummy na chocolates.

b. Ụlọ ọrụ na-emepụta ọgwụ: A na-eji CMC mee ihe dị ka ihe nkedo, nkwụsịtụ, na onye na-ekpuchi mbadamba nkume na usoro ọgwụ. A na-ejikwa HPMC dị ka ihe nkedo, disintegrant, na mbadamba ihe mkpuchi n'ụdị ọgwụ.