Carboxymethyl cellulose (CMC) bụ polymer soluble mmiri nke sitere na cellulose, nke bụ polymer organic kasị ukwuu n'ụwa. A na-emepụta CMC site na mgbanwe kemịkalụ nke cellulose, nke sitere na pulp osisi ma ọ bụ akwa owu. A na-eji ya eme ihe n'ọtụtụ dịgasị iche iche n'ihi ihe ndị pụrụ iche ya, gụnyere ike ịmepụta ngwọta viscous na gels, ikike ijikọta mmiri, na biodegradaability ya.
Ọdịdị Chemical na Mmepụta
Usoro kemịkalụ nke CMC nwere ọkpụkpụ cellulose nwere otu carboxymethyl (-CH2-COOH) jikọtara na ụfọdụ hydroxyl otu (-OH) na glucose monomers. Usoro ngbanwe a na-agụnye ịgwọ cellulose na chloroacetic acid na ọkara alkaline, na-eduga na nhazi sodium carboxymethyl cellulose. Ogo nke nnọchi (DS) na-ezo aka na nkezi ọnụọgụ hydroxyl otu otu glucose nke ndị otu carboxymethyl dochie anya, yana DS nke 0.4 ruo 1.4 bụ ihe a na-ahụkarị maka ọtụtụ ngwa.
Usoro mmepụta nke CMC gụnyere ọtụtụ usoro:
Alkalization: A na-emeso cellulose na ntọala siri ike, nke na-abụkarị sodium hydroxide, iji mepụta cellulose alkali.
Etherification: A na-eji chloroacetic acid meghachi omume alkali cellulose, na-eme ka ndị otu carboxymethyl dochie otu hydroxyl.
Nchacha: A na-asachapụ ma sachaa CMC crude ka ọ wepụ ngwaahịa na ngafe reagents.
ihicha na igwe igwe: CMC ahụ emechara ka akpọnwụọ wee gwerie ya iji nweta nha urughuru achọrọ.
Njirimara
A maara CMC maka akụrụngwa ya pụrụ iche, nke na-eme ka ọ baa uru na ụlọ ọrụ dị iche iche:
Mmiri Solubility: CMC na-agbaze ngwa ngwa n'ime mmiri, na-emepụta ngwọta doro anya, viscous.
Viscosity Modulation: Enwere ike idozi viscosity nke ngwọta CMC site n'ịgbanwe ịta ahụhụ na ịdị arọ molecular, na-eme ka ọ baa uru maka ịgbatị na ịkwado.
Nhazi ihe nkiri: Ọ nwere ike ịmepụta ihe nkiri siri ike ma na-agbanwe agbanwe mgbe akpọnwụwo na ngwọta.
Ngwongwo ihe eji eme ihe: CMC na-egosipụta àgwà nrapado dị mma, nke bara uru na ngwa dị ka ihe mkpuchi na mkpuchi.
Biodegradability: N'ịbụ nke sitere na cellulose eke, CMC na-eme ka ọ bụrụ enyi na gburugburu ebe obibi.
Ụlọ ọrụ nri
A na-eji CMC eme ihe n'ọtụtụ ebe dị ka ihe mgbakwunye nri (E466) n'ihi ike ya gbanwee viscosity na ịkwado emulsions na ngwaahịa nri dị iche iche. Ọ na-arụ ọrụ dị ka onye na-agba, stabilizer, na emulsifier na ngwaahịa ndị dị ka ice cream, ngwaahịa mmiri ara ehi, ihe ebe a na-eme achịcha, na akwa salad. Dịka ọmụmaatụ, na ice cream, CMC na-enyere aka igbochi nhazi nke kristal ice, na-eme ka ọ dị nro.
Ọgwụ na ịchọ mma
Na ụlọ ọrụ na-emepụta ọgwụ, a na-eji CMC eme ihe dị ka onye na-ekekọta na mbadamba nkume, ihe na-ekpochapụ, na ihe na-eme ka viscosity dịkwuo mma na nkwụsịtụ na emulsions. Ọ na-arụkwa ọrụ dị ka ihe nkwụsi ike na lotions, creams, na gels na ụlọ ọrụ ịchọ mma. Ọdịdị ya na-adịghị egbu egbu na nke na-adịghị mma na-eme ka ọ dị mma maka iji ngwaahịa ndị a.
Akwụkwọ na Textiles
A na-eji CMC n'ọrụ na ụlọ ọrụ akwụkwọ dị ka onye na-emepụta ihe iji meziwanye ike na mbipụta akwụkwọ. Na textiles, a na-eji ya dị ka ihe na-eme ka ihe na-esi ísì ụtọ na-eme ka ihe na-esi ísì ụtọ na-eme ka ọ bụrụ ihe na-eme ka ọ bụrụ ihe na-emepụta akwa akwa akwa, na-eme ka ịdị n'otu na ịdị mma nke mbipụta.
Ihe nchacha na ihe nhicha
N'ime ihe nchacha, CMC na-eje ozi dị ka onye na-egbochi ala, na-egbochi unyi ka ọ ghara ịkwanye akwa n'oge ịsacha. Ọ na-emekwa ka arụ ọrụ nke ihe nchacha mmiri dị mma site n'ịkwalite viscosity na nkwụsi ike ha.
Ịkụpụta mmanụ na Ngwuputa
A na-eji CMC na mmiri mmiri na-egwupụta mmanụ iji chịkwaa viscosity na dị ka rheology modifier iji nọgide na-enwe nkwụsi ike nke apịtị a na-egwupụta ihe, na-egbochi ịdaba nke olulu mmiri ma na-enyere aka iwepụ ihe ọkụkụ. Na Ngwuputa Ngwuputa, a na-eji ya dị ka onye na-ahụ maka flotation na flocculant.
Ihe owuwu na seramiki
N'ime ụlọ ọrụ ihe owuwu, a na-eji CMC mee ihe na ciment na ngwa ngwa iji meziwanye njide mmiri na ịrụ ọrụ. Na ceramics, ọ na-eme dị ka ihe nkedo na plasticizer na seramiiki pastes, na-eme ka ha ịkpụzi na ihicha Njirimara.
Ihe gbasara gburugburu na nchekwa
A na-ewerekarị CMC dị ka nchekwa (GRAS) site n'aka ndị ọrụ nchịkwa dịka FDA. Ọ naghị egbu egbu, anaghị egbu egbu, na ihe na-emebi emebi, na-eme ka ọ bụrụ enyi na gburugburu ebe obibi. Otú ọ dị, usoro mmepụta ihe na-agụnye kemịkalụ nke a ghaghị iji nlezianya mee ya iji gbochie mmetọ gburugburu ebe obibi. Ntufu na ọgwụgwọ nke ihe mkpofu dị mkpa iji belata mmetụta gburugburu ebe obibi.
Ihe ọhụrụ na ntụzịaka ga-eme n'ọdịnihu
Ọganiihu n'oge na-adịbeghị anya na ngalaba CMC gụnyere mmepe nke CMC gbanwetụrụ yana akụrụngwa emelitere maka ngwa akọwapụtara. Dịka ọmụmaatụ, CMC nwere ịdị arọ molekụla ahaziri na ogo nke nnọchi nwere ike ịnye arụmọrụ ka mma na sistemụ nnyefe ọgwụ ma ọ bụ dị ka ihe nkwakọ ngwaahịa dabere na bio. Na mgbakwunye, nyocha na-aga n'ihu na-enyocha iji CMC na mpaghara ọhụrụ dị ka injinia anụ ahụ na bioprinting, ebe ikike ya na imepụta gel nwere ike ịba uru nke ukwuu.
Carboxymethyl cellulose bụ ihe bara uru ma baa uru nke nwere ọtụtụ ngwa n'ofe ụlọ ọrụ dị iche iche. Njirimara ya pụrụ iche, gụnyere mmiri solubility, viscosity modulation, na biodegradability, na-eme ka ọ bụrụ ihe dị mkpa n'ọtụtụ ngwaahịa. Site na ọganihu na-aga n'ihu na mmepụta na mgbanwe ya, CMC dị njikere ịrụ ọrụ dị mkpa na-arịwanye elu na mpaghara ọdịnala na nke na-apụta, na-enye aka na ọganihu nkà na ụzụ na mgbalị nkwado.
Oge nzipu: Jun-06-2024