Carboxymethyl cellulose (CMC) uye sodium carboxymethyl cellulose (CMC-Na) zvakajairika makomisheni muindasitiri yemakemikari uye indasitiri yechikafu. Vane mimwe misiyano nekubatanidza muchimiro, kuita uye kushandiswa. Ichi chinyorwa chinozoongorora zvakadzama zvivakwa, nzira dzekugadzirira, mashandisirwo uye kukosha kwezviviri izvi mundima dzakasiyana.
(1) Carboxymethyl cellulose (CMC)
1. Zvinhu zvinokosha
Carboxymethyl cellulose (CMC) inotorwa necarboxymethylated ye cellulose uye ndeye anionic linear polysaccharide. Chimiro chayo chakakosha ndechekuti mamwe mapoka e-hydroxyl (-OH) mu cellulose molecule anotsiviwa nemapoka e-carboxymethyl (-CH₂-COOH), nekudaro achichinja kunyungudika uye kushanda kwezvinhu zveselulosi. CMC inowanzo chena kusvika kuhupfu yeyero zvishoma, isinganhuhwi uye isinganakidze, isinganyunguriki muorganic solvents, asi inogona kutora mvura kuita gel.
2. Kugadzirira nzira
Kugadzirira kweCMC kazhinji kunosanganisira matanho anotevera:
Alkalinization reaction: Sanganisa cellulose ne sodium hydroxide (NaOH) kushandura mapoka ehydroxyl mu cellulose kuita alkaline munyu.
Etherification reaction: Alkaized cellulose inopindirana ne chloroacetic acid (ClCH₂COOH) kugadzira carboxymethyl cellulose uye sodium chloride (NaCl).
Izvi zvinowanzoitwa mumvura kana ethanol mhinduro, uye tembiricha yekuita inodzorwa pakati pe60 ℃-80 ℃. Mushure mekuita kwapera, yekupedzisira CMC chigadzirwa chinowanikwa kuburikidza nekugeza, kusefa, kuomesa uye mamwe matanho.
3. Minda yekushandisa
CMC inonyanya kushandiswa muindasitiri yechikafu, mushonga, machira, kugadzira mapepa uye mamwe minda. Iine mabasa akawanda akadai sekukora, kudzikamisa, kuchengetedza mvura uye kugadzira firimu. Semuenzaniso, muindasitiri yezvekudya, CMC inogona kushandiswa seyakakora, stabilizer uye emulsifier ye ice cream, jamu, yogati uye zvimwe zvigadzirwa; mumunda wemishonga, CMC inoshandiswa sebinder, thickener uye stabilizer yemishonga; mumaindasitiri emachira uye ekugadzira mapepa, CMC inoshandiswa senge slurry yekuwedzera uye pamusoro saizi mumiriri kuvandudza kunaka uye kugadzikana kwechigadzirwa.
(2) Sodium carboxymethyl cellulose (CMC-Na)
1. Zvinhu zvinokosha
Sodium carboxymethyl cellulose (CMC-Na) ndiyo sodium munyu fomu ye carboxymethyl cellulose. Kuenzaniswa neCMC, CMC-Na ine zvirinani kunyungudika kwemvura. Chimiro chayo chakakosha ndechekuti mapoka ecarboxylmethyl muCMC anoshandurwa zvishoma kana kuti akazara kuita munyu wesodium, kureva kuti, maatomu ehydrogen pamapoka ecarboxylmethyl anotsiviwa nesodium ions (Na⁺). CMC-Na inowanzo chena kana kuti zvishoma yero poda kana granules, inonyungudika zviri nyore mumvura, uye inoumba viscous transparent solution.
2. Kugadzirira nzira
Nzira yekugadzirira yeCMC-Na yakafanana neiyo yeCMC, uye matanho makuru anosanganisira:
Alkalinization reaction: cellulose inogadziriswa uchishandisa sodium hydroxide (NaOH).
Etherification reaction: Alkaized cellulose inobatwa ne chloroacetic acid (ClCH₂COOH) kugadzira CMC.
Sodiumization reaction: CMC inoshandurwa kuita yayo sodium munyu fomu ne neutralization reaction mune aqueous mhinduro.
Mukuita uku, zvinofanirwa kutarisisa kudzora maitiro ekuita, senge pH uye tembiricha, kuti uwane zvigadzirwa zveCMC-Na zvine mashandiro akakwana.
3. Minda yekushandisa
Nzvimbo dzekushandisa dzeCMC-Na dzakakura kwazvo, dzinofukidza maindasitiri mazhinji akadai sechikafu, mushonga, makemikari ezuva nezuva, uye peturu. Muindasitiri yezvekudya, CMC-Na yakakosha mukobvu, stabilizer uye emulsifier, uye inoshandiswa zvakanyanya muzvigadzirwa zvemukaka, muto, condiments, nezvimwe. Mumunda wemishonga, CMC-Na inoshandiswa seanonamira, gel uye lubricant yemapiritsi. . Muindasitiri yemakemikari yemazuva ese, CMC-Na inoshandiswa mune zvigadzirwa senge mushonga wemazino, shampoo, uye conditioner, uye ine yakanaka kukora uye kudzikamisa mhedzisiro. Uye zvakare, mukuchera oiri, CMC-Na inoshandiswa seyakakora uye rheology regulator yekuchera madhaka, iyo inogona kuvandudza fluidity uye kugadzikana kwedhaka.
(3) Musiyano uye kubatana pakati peCMC neCMC-Na
1. Mamiriro uye zvinhu
Musiyano mukuru uripo pakati peCMC neCMC-Na muchimiro chemolecular ndechekuti iyo carboxylmethyl boka reCMC-Na iripo zvishoma kana zvizere muchimiro chesodium munyu. Uyu mutsauko wekuumbwa unoita kuti CMC-Na iratidze kunyungudika kwakanyanya uye kugadzikana kuri nani mumvura. CMC inowanzoita zvishoma kana kuti yakazara carboxymethylated cellulose, nepo CMC-Na iri iyo sodium munyu fomu yeiyi carboxymethyl cellulose.
2. Solubility uye Mashandisirwo
CMC ine kumwe kunyungudika mumvura, asi CMC-Na ine kunyungudika kuri nani uye inogona kugadzira yakagadzika viscous mhinduro mumvura. Nekuda kwekunyungudika kwayo kwemvura uye maitiro eionization, CMC-Na inoratidza kuita kurinani pane CMC mumashandisirwo mazhinji. Semuenzaniso, muindasitiri yezvekudya, CMC-Na inoshandiswa zvakanyanya seyakakora uye inodzikamisa nekuda kwekunaka kwayo kunyungudika kwemvura uye yakakwira viscosity, nepo CMC ichinyanya kushandiswa mumashandisirwo asingade yakanyanya kunyungudika kwemvura.
3. Kugadzirira nzira
Kunyangwe maitiro ekugadzirira ezviviri izvi zvakada kufanana, chigadzirwa chekupedzisira cheCMC kugadzirwa carboxymethyl cellulose, nepo CMC-Na ichiwedzera kushandura carboxymethyl cellulose kuita yayo sodium munyu fomu kuburikidza ne neutralization reaction panguva yekugadzira. Shanduko iyi inopa CMC-Na kuita zvirinani mune mamwe maapplication akakosha, senge kuita zvirinani mumashandisirwo anoda kunyungudika kwemvura uye kugadzikana kwe electrolyte.
Carboxymethyl cellulose (CMC) uye sodium carboxymethyl cellulose (CMC-Na) zvinhu zviviri zveselulosi zvine kukosha kweindasitiri. Kunyangwe iwo akafanana muchimiro, CMC-Na inoratidza kunyungudika kwepamusoro kwemvura uye kugadzikana nekuda kwekushandurwa kwemamwe kana ese emapoka ecarboxyl muCMC-Na kuita munyu wesodium. Musiyano uyu unoita kuti CMC neCMC-Na dzive neyadzo yakasarudzika mabhenefiti uye mabasa mune akasiyana maindasitiri ekushandisa. Kunzwisisa uye kushandisa nemazvo zvinhu zviviri izvi zvinogona kubatsira kukwenenzvera kuita kwechigadzirwa uye kuvandudza mashandiro ekugadzira munzvimbo dzakawanda dzakadai sechikafu, mushonga, uye indasitiri yemakemikari.
Nguva yekutumira: Jun-17-2024