Carboxymethylcellulose (CMC) thiab hmoov txhuv nplej siab yog ob qho tib si polysaccharides, tab sis lawv muaj cov qauv sib txawv, cov khoom siv thiab kev siv.
Molecular muaj pes tsawg leeg:
1. Carboxymethylcellulose (CMC):
Carboxymethylcellulose yog ib tug derivative ntawm cellulose, ib tug linear polymer tsim los ntawm qabzib units txuas nrog β-1,4-glycosidic bonds.Kev hloov pauv ntawm cellulose suav nrog kev qhia txog carboxymethyl pawg los ntawm etherification, ua carboxymethylcellulose.Cov pab pawg carboxymethyl ua rau CMC dej-soluble thiab muab cov khoom polymer tshwj xeeb.
2. Cov hmoov nplej:
Cov hmoov txhuv nplej siab yog cov carbohydrate uas muaj cov piam thaj sib txuas los ntawm α-1,4-glycosidic bonds.Nws yog ib tug natural polymer pom nyob rau hauv cov nroj tsuag uas yog siv los ua ib lub zog cia compound.Cov hmoov txhuv nplej siab feem ntau yog tsim los ntawm ob hom piam thaj polymers: amylose (ncaj chains) thiab amylopectin (cov saw saw saw).
Lub cev muaj zog:
1. Carboxymethylcellulose (CMC):
Solubility: CMC yog dej-soluble vim muaj cov carboxymethyl pawg.
Viscosity: Nws nthuav tawm cov viscosity siab hauv cov tshuaj, ua rau nws muaj txiaj ntsig hauv ntau yam kev siv xws li kev ua zaub mov thiab tshuaj.
Transparency: CMC cov kev daws teeb meem feem ntau yog pob tshab.
2. Cov hmoov nplej:
Solubility: Cov hmoov txhuv nplej siab yog insoluble hauv dej.Nws yuav tsum tau gelatinization ( cua sov hauv dej) thiaj li yaj.
Viscosity: Starch paste muaj viscosity, tab sis nws feem ntau qis dua CMC.
Transparency: Starch pastes yuav opaque, thiab cov degree ntawm opacity yuav txawv nyob ntawm seb hom hmoov txhuv nplej siab.
qhov chaw:
1. Carboxymethylcellulose (CMC):
CMC feem ntau yog tsim los ntawm cellulose los ntawm cov nroj tsuag xws li ntoo pulp lossis paj rwb.
2. Cov hmoov nplej:
Cov nroj tsuag xws li pob kws, nplej, qos yaj ywm thiab mov yog nplua nuj nyob rau hauv cov hmoov txhuv nplej siab.Nws yog cov khoom tseem ceeb hauv ntau cov khoom noj staple.
Txheej txheem ntau lawm:
1. Carboxymethylcellulose (CMC):
Kev tsim khoom ntawm CMC suav nrog cov tshuaj tiv thaiv etherification ntawm cellulose nrog chloroacetic acid hauv qhov nruab nrab alkaline.Cov tshuaj tiv thaiv no ua rau hloov cov pawg hydroxyl hauv cellulose nrog pawg carboxymethyl.
2. Cov hmoov nplej:
Starch extraction yuav rhuav tshem cov nroj tsuag thiab cais cov hmoov txhuv nplej siab granules.Cov hmoov txhuv nplej siab tuaj yeem ua tiav ntau yam txheej txheem, suav nrog kev hloov kho thiab gelatinization, kom tau txais cov khoom xav tau.
Hom phiaj thiab kev siv:
1. Carboxymethylcellulose (CMC):
Kev lag luam khoom noj khoom haus: CMC yog siv los ua cov thickener, stabilizer thiab emulsifier hauv ntau yam khoom noj.
Pharmaceuticals: Vim nws txoj kev khi thiab kev sib cais, nws pom siv hauv cov tshuaj formulations.
Roj Drilling: CMC yog siv rau hauv cov roj drilling kua los tswj rheology.
2. Cov hmoov nplej:
Kev lag luam khoom noj khoom haus: Cov hmoov txhuv nplej siab yog cov khoom tseem ceeb ntawm ntau cov khoom noj thiab yog siv los ua tus neeg sawv cev thickening, gelling agent thiab stabilizer.
Kev lag luam textile: Cov hmoov txhuv nplej siab yog siv rau hauv kev lag luam textile los muab kev nruj rau cov ntaub.
Kev lag luam ntawv: Cov hmoov txhuv nplej siab yog siv hauv papermaking kom cov ntawv muaj zog thiab txhim kho cov khoom nto.
Txawm hais tias CMC thiab hmoov txhuv nplej siab yog ob qho tib si polysaccharides, lawv muaj qhov sib txawv ntawm cov molecular muaj pes tsawg leeg, cov khoom siv lub cev, qhov chaw, cov txheej txheem tsim khoom thiab kev siv.CMC yog dej-soluble thiab viscous heev thiab feem ntau nyiam nyob rau hauv daim ntawv thov uas yuav tsum tau cov khoom no, thaum starch yog ib tug ntau yam polysaccharide lug siv nyob rau hauv cov zaub mov, textile thiab ntawv industries.Kev nkag siab txog qhov sib txawv no yog qhov tseem ceeb rau kev xaiv cov polymer uas tsim nyog rau kev lag luam thiab kev lag luam.
Post lub sij hawm: Jan-12-2024