Carboxymethyl cellulose na sodium carboxymethyl cellulose bụ otu?

Carboxymethyl cellulose (CMC) na sodium carboxymethyl cellulose (CMC-Na) bụ ogige nkịtị na ụlọ ọrụ kemịkalụ na ụlọ ọrụ nri. Ha nwere ụfọdụ ọdịiche na njikọ na nhazi, arụmọrụ na ojiji. Isiokwu a ga-enyocha n'ụzọ zuru ezu Njirimara, ụzọ nkwadebe, ngwa na mkpa nke abụọ dị iche iche ubi.

(1) Carboxymethyl cellulose (CMC)

1. Ihe ndị bụ isi
Carboxymethyl cellulose (CMC) bụ carboxymethylated sitere na cellulose na bụ anionic linear polysaccharide. Ọdịdị ya bụ isi bụ na ụfọdụ hydroxyl (-OH) dị na cellulose molecule na-anọchi anya otu carboxymethyl (-CH₂-COOH), si otú ahụ na-agbanwe solubility na arụ ọrụ nke cellulose. CMC n'ozuzu na-acha ọcha ruo ntakịrị ntụ ntụ edo edo, enweghị isi na enweghị ụtọ, enweghị ike ime ya na ihe mgbaze organic, mana ọ nwere ike ịmịnye mmiri ka ọ bụrụ gel.

2. Usoro nkwadebe
Nkwadebe nke CMC na-agụnyekarị usoro ndị a:
Mmeghachi omume Alkalinization: Gwakọta cellulose na sodium hydroxide (NaOH) iji mee ka otu hydroxyl dị na cellulose ghọọ nnu alkaline.
Mmeghachi omume etherification: Alkalized cellulose na-emeghachi omume na chloroacetic acid (ClCH₂COOH) iji mepụta carboxymethyl cellulose na sodium chloride (NaCl).
Usoro a na-emekarị na mmiri ma ọ bụ ethanol ngwọta, na mmeghachi omume okpomọkụ na-achịkwa n'etiti 60 ℃-80 ℃. Mgbe emechara mmeghachi omume ahụ, a na-enweta ngwaahịa CMC ikpeazụ site na ịsacha, nzacha, ihicha na usoro ndị ọzọ.

3. Ngwa ngwa
A na-ejikarị CMC eme ihe na ụlọ ọrụ nri, ọgwụ, textiles, ide akwụkwọ na ihe ndị ọzọ. Ọ nwere ọtụtụ ọrụ dị ka ndina, nkwụsi ike, njigide mmiri na nhazi ihe nkiri. Dịka ọmụmaatụ, na ụlọ ọrụ nri, a pụrụ iji CMC mee ihe dị ka onye na-agba ume, stabilizer na emulsifier maka ice cream, jam, yogọt na ngwaahịa ndị ọzọ; n'ọhịa ọgwụ, a na-eji CMC eme ihe dị ka onye na-ekekọta, thickener na stabilizer maka ọgwụ; N'ime ụlọ ọrụ textile na ndị na-emepụta akwụkwọ, a na-eji CMC mee ihe dị ka ihe mgbakwunye slurry na onye na-emepụta ihe na-eme ka ọ dịkwuo mma na nkwụsi ike nke ngwaahịa ahụ.

(2) sodium carboxymethyl cellulose (CMC-Na)

1. Ihe ndị bụ isi
Sodium carboxymethyl cellulose (CMC-Na) bụ nnu sodium ụdị nke carboxymethyl cellulose. Tụnyere CMC, CMC-Na nwere mma mmiri solubility. Nhazi ya bụ na ndị otu carboxylmethyl dị na CMC na-agbanwe akụkụ ma ọ bụ kpam kpam na nnu sodium ha, ya bụ, atom hydrogen na otu carboxylmethyl na-eji sodium ion (Na⁺) dochie ya. CMC-Na na-abụkarị ọcha ma ọ bụ ubé odo ntụ ntụ ma ọ bụ granules, na-adị mfe soluble na mmiri, na-etolite a viscous uzo ngwọta.

2. Usoro nkwadebe
Usoro nkwadebe nke CMC-Na yiri nke CMC, usoro ndị bụ isi gụnyere:
Mmeghachi omume Alkalinization: cellulose bụ alkalized site na iji sodium hydroxide (NaOH).
Mmeghachi omume etherification: Alkalized cellulose na-emeghachi omume na chloroacetic acid (ClCH₂COOH) iji mepụta CMC.
Mmeghachi omume Sodiumization: A na-atụgharị CMC n'ụdị nnu sodium ya site na mmeghachi omume neutralization na ngwọta mmiri.
N'ime usoro a, ọ dị mkpa ịṅa ntị na ịchịkwa ọnọdụ mmeghachi omume, dị ka pH na okpomọkụ, iji nweta ngwaahịa CMC-Na na arụmọrụ kachasị mma.

3. Ngwa ngwa
Mpaghara ngwa nke CMC-Na sara mbara, na-ekpuchi ọtụtụ ụlọ ọrụ dịka nri, ọgwụ, kemịkalụ kwa ụbọchị, na mmanụ ala. Na nri ụlọ ọrụ, CMC-Na bụ ihe dị mkpa thickener, stabilizer na emulsifier, na ọtụtụ-eji na mmiri ara ehi ngwaahịa, juices, condiments, wdg N'ime ọgwụ ubi, CMC-Na na-eji dị ka ihe nrapado, gel na mmanu maka mbadamba nkume. . N'ime ụlọ ọrụ kemịkalụ kwa ụbọchị, a na-eji CMC-Na na ngwaahịa ndị dị ka ntacha eze, ncha ntutu, na ntụ oyi, ma nwee mmetụta dị nro na nkwụsi ike. Tụkwasị na nke ahụ, n'ịgba mmanụ, a na-eji CMC-Na eme ihe dị ka onye na-ahụ maka ihe na-emepụta ihe na rheology regulator maka ịkụ ala apịtị, nke nwere ike imeziwanye mmiri na nkwụsi ike nke apịtị.

(3) Ọdịiche na njikọ dị n'etiti CMC na CMC-Na
1. Ọdịdị na ihe onwunwe
Isi ihe dị iche n'etiti CMC na CMC-Na na usoro ihe omimi bụ na otu carboxylmethyl nke CMC-Na dị n'akụkụ ma ọ bụ kpamkpam n'ụdị nnu sodium. Nke a bughi ihe dị iche na-eme ka CMC-Na egosi elu solubility na mma kwụsie ike na mmiri. CMC na-abụkarị akụkụ ma ọ bụ kpamkpam carboxymethylated cellulose, ebe CMC-Na bụ sodium nnu ụdị nke a carboxymethyl cellulose.

2. Solubility na ojiji
CMC nwere ụfọdụ solubility na mmiri, ma CMC-Na nwere mma solubility na nwere ike na-etolite a kwụsiri ike viscous ngwọta na mmiri. N'ihi mma mmiri solubility ya na njirimara ionization, CMC-Na na-egosipụta arụmọrụ ka mma karịa CMC n'ọtụtụ ngwa. Dịka ọmụmaatụ, na ụlọ ọrụ nri, a na-ejikarị CMC-Na eme ihe dị ka onye na-agba ume na stabilizer n'ihi mma mmiri ya dị mma na nnukwu viscosity, ebe a na-ejikarị CMC eme ihe na ngwa ndị na-adịghị achọ nnukwu mmiri mmiri.

3. Usoro nkwadebe
Ọ bụ ezie na usoro nkwadebe nke abụọ ahụ bụ ihe yiri ya, ngwaahịa ikpeazụ nke mmepụta CMC bụ carboxymethyl cellulose, ebe CMC-Na na-agbanwekwa carboxymethyl cellulose n'ime nnu nnu sodium ya site na mmeghachi omume neutralization n'oge mmepụta usoro. Ntughari a na-enye CMC-Na arụmọrụ ka mma na ụfọdụ ngwa pụrụ iche, dị ka ịrụ ọrụ ka mma na ngwa chọrọ solubility mmiri na nkwụsi ike electrolyte.

Carboxymethyl cellulose (CMC) na sodium carboxymethyl cellulose (CMC-Na) bụ abụọ cellulose mmepụta nwere mkpa ulo oru uru. Ọ bụ ezie na ha yiri na nhazi, CMC-Na na-egosi elu mmiri solubility na nkwụsi ike n'ihi ntughari nke ụfọdụ ma ọ bụ niile nke carboxyl otu na CMC-Na n'ime sodium nnu. Nke a dị iche na-eme ka CMC na CMC-Na nwere onwe ha pụrụ iche uru na ọrụ dị iche iche ulo oru ngwa. Ịghọta na itinye ihe abụọ a n'ọrụ n'ụzọ ziri ezi nwere ike inye aka kwalite arụmọrụ ngwaahịa yana melite nrụpụta mmepụta n'ọtụtụ mpaghara dịka nri, ọgwụ na ụlọ ọrụ kemịkal.