Kodi carboxymethyl cellulose ndi sodium carboxymethyl cellulose ndizofanana?

Carboxymethyl cellulose (CMC) ndi sodium carboxymethyl cellulose (CMC-Na) ndizomwe zimagwiritsidwa ntchito pamakampani opanga mankhwala komanso mafakitale azakudya. Iwo ali ndi zosiyana zina ndi kugwirizana mu kapangidwe, ntchito ndi ntchito. Nkhaniyi isanthula mwatsatanetsatane katundu, njira zokonzekera, ntchito ndi kufunika kwa awiriwa m'madera osiyanasiyana.

(1) Carboxymethyl cellulose (CMC)

1. Basic katundu
Carboxymethyl cellulose (CMC) ndi chochokera ku carboxymethylated mu cellulose ndipo ndi anionic linear polysaccharide. Mapangidwe ake oyambira ndikuti magulu ena a hydroxyl (-OH) mu molekyulu ya cellulose amasinthidwa ndi magulu a carboxymethyl (-CH₂-COOH), motero amasintha kusungunuka ndi magwiridwe antchito a cellulose. CMC nthawi zambiri imakhala yoyera mpaka yachikasu pang'ono, yopanda fungo komanso yopanda kukoma, yosasungunuka mu zosungunulira za organic, koma imatha kuyamwa madzi kupanga gel osakaniza.

2. Njira yokonzekera
Kukonzekera kwa CMC nthawi zambiri kumaphatikizapo izi:
Alkalinization reaction: Sakanizani cellulose ndi sodium hydroxide (NaOH) kuti musinthe magulu a hydroxyl mu cellulose kukhala mchere wamchere.
Etherification reaction: Ma cellulose amchere amakumana ndi chloroacetic acid (ClCH₂COOH) kupanga carboxymethyl cellulose ndi sodium chloride (NaCl).
Izi nthawi zambiri zimachitika m'madzi kapena njira ya ethanol, ndipo kutentha kumayendetsedwa pakati pa 60 ℃-80 ℃. Zomwezo zikamalizidwa, chomaliza cha CMC chimapezedwa ndikutsuka, kusefa, kuyanika ndi njira zina.

3. Minda yofunsira
CMC imagwiritsidwa ntchito kwambiri m'makampani azakudya, mankhwala, nsalu, kupanga mapepala ndi zina. Lili ndi ntchito zambiri monga kukhuthala, kukhazikika, kusunga madzi ndi kupanga mafilimu. Mwachitsanzo, mu makampani chakudya CMC angagwiritsidwe ntchito monga thickener, stabilizer ndi emulsifier kwa ayisikilimu, kupanikizana, yoghurt ndi zinthu zina; m'munda wamankhwala, CMC imagwiritsidwa ntchito ngati binder, thickener ndi stabilizer mankhwala; m'mafakitale opangira nsalu ndi mapepala, CMC imagwiritsidwa ntchito ngati chowonjezera cha slurry komanso choyezera pamwamba kuti chinthucho chikhale chokhazikika komanso chokhazikika.

(2) Sodium carboxymethyl cellulose (CMC-Na)

1. Basic katundu
Sodium carboxymethyl cellulose (CMC-Na) ndi mtundu wa mchere wa sodium wa carboxymethyl cellulose. Poyerekeza ndi CMC, CMC-Na ili ndi kusungunuka kwamadzi bwino. Mapangidwe ake ndiakuti magulu a carboxylmethyl mu CMC amasinthidwa pang'ono kapena kwathunthu kukhala mchere wawo wa sodium, ndiye kuti, maatomu a haidrojeni pamagulu a carboxylmethyl amasinthidwa ndi ayoni a sodium (Na⁺). CMC-Na nthawi zambiri imakhala yoyera kapena yachikasu pang'ono kapena ma granules, osungunuka mosavuta m'madzi, ndipo imapanga yankho lowoneka bwino.

2. Njira yokonzekera
Njira yokonzekera CMC-Na ndiyofanana ndi ya CMC, ndipo njira zazikuluzikulu zikuphatikiza:
Alkaliization reaction: cellulose ndi alkaliized pogwiritsa ntchito sodium hydroxide (NaOH).
Etherification reaction: Ma cellulose amchere amachitidwa ndi chloroacetic acid (ClCH₂COOH) kupanga CMC.
Sodiumization reaction: CMC imasinthidwa kukhala mawonekedwe ake amchere a sodium ndi neutralization reaction mu njira yamadzi.
Pochita izi, ndikofunikira kuyang'anira kuwongolera momwe zinthu zimachitikira, monga pH ndi kutentha, kuti mupeze zinthu za CMC-Na zogwira ntchito bwino.

3. Minda yofunsira
Magawo ogwiritsira ntchito CMC-Na ndi otakata kwambiri, okhudza mafakitale ambiri monga chakudya, mankhwala, mankhwala a tsiku ndi tsiku, ndi mafuta. M'makampani azakudya, CMC-Na ndi yofunika kwambiri, yokhazikika komanso emulsifier, ndipo imagwiritsidwa ntchito kwambiri muzakudya zamkaka, timadziti, zokometsera, ndi zina zambiri. . Pamakampani opanga mankhwala atsiku ndi tsiku, CMC-Na imagwiritsidwa ntchito pazinthu monga mankhwala otsukira mano, shampu, ndi zoziziritsa kukhosi, ndipo imakhala ndi zotsatira zabwino zokhuthala komanso zokhazikika. Kuphatikiza apo, pobowola mafuta, CMC-Na imagwiritsidwa ntchito ngati chowongolera komanso chowongolera cha rheology pobowola matope, omwe amatha kusintha matope komanso kukhazikika kwamatope.

(3) Kusiyana ndi kulumikizana pakati pa CMC ndi CMC-Na
1. Kapangidwe ndi katundu
Kusiyana kwakukulu pakati pa CMC ndi CMC-Na mu kapangidwe ka maselo ndikuti gulu la carboxylmethyl la CMC-Na limakhalapo pang'ono kapena kwathunthu mu mawonekedwe a mchere wa sodium. Kusiyana kwapangidwe kumeneku kumapangitsa CMC-Na kuwonetsa kusungunuka kwambiri komanso kukhazikika bwino m'madzi. CMC nthawi zambiri imakhala pang'ono kapena kwathunthu carboxymethylated cellulose, pomwe CMC-Na ndi mtundu wa mchere wa sodium wa carboxymethyl cellulose.

2. Kusungunuka ndi Ntchito
CMC imakhala ndi kusungunuka kwina m'madzi, koma CMC-Na imakhala ndi kusungunuka bwino ndipo imatha kupanga njira yokhazikika ya viscous m'madzi. Chifukwa cha kusungunuka kwamadzi bwino komanso mawonekedwe a ionization, CMC-Na imawonetsa magwiridwe antchito bwino kuposa CMC pamapulogalamu ambiri. Mwachitsanzo, m'makampani azakudya, CMC-Na imagwiritsidwa ntchito kwambiri ngati thickener ndi stabilizer chifukwa cha kusungunuka kwamadzi bwino komanso kukhuthala kwakukulu, pomwe CMC imagwiritsidwa ntchito nthawi zambiri pamapulogalamu omwe safuna kusungunuka kwamadzi.

3. Kukonzekera ndondomeko
Ngakhale njira zokonzekera ziwirizi ndizofanana, chomaliza chopangidwa ndi CMC ndi carboxymethyl cellulose, pomwe CMC-Na imatembenuzanso carboxymethyl cellulose kukhala mawonekedwe ake amchere a sodium kudzera pakusalowerera ndale panthawi yopanga. Kutembenukaku kumapatsa CMC-Na kugwira ntchito bwino pamapulogalamu ena apadera, monga kugwira ntchito bwino pamapulogalamu omwe amafunikira kusungunuka kwamadzi ndi kukhazikika kwa electrolyte.

Carboxymethyl cellulose (CMC) ndi sodium carboxymethyl cellulose (CMC-Na) ndi zotuluka ziwiri za cellulose zomwe zili ndi phindu la mafakitale. Ngakhale ndizofanana m'mapangidwe, CMC-Na imawonetsa kusungunuka kwamadzi komanso kukhazikika kwamadzi chifukwa cha kutembenuka kwa ena kapena magulu onse a carboxyl mu CMC-Na kukhala mchere wa sodium. Kusiyanaku kumapangitsa CMC ndi CMC-Na kukhala ndi maubwino ndi ntchito zawo zapadera pamafakitale osiyanasiyana. Kumvetsetsa ndi kugwiritsa ntchito zinthu ziwirizi moyenera kungathandize kukhathamiritsa ntchito yazinthu ndikuwongolera kupanga bwino m'magawo ambiri monga chakudya, mankhwala, ndi mafakitale.