Carboxymethylcellulose (CMC) thiab hmoov txhuv nplej siab yog ob qho tib si polysaccharides, tab sis lawv muaj cov qauv sib txawv, cov khoom thiab cov ntawv thov sib txawv.
Cov qauv molecular:
1. Carboxymethylcellulose (CMC):
Carboxymethylcellulose yog ib qho derivative ntawm cellulose, ib tug linear polymer uas muaj cov glucose units txuas nrog los ntawm β-1,4-glycosidic bonds. Kev hloov kho ntawm cellulose cuam tshuam nrog kev qhia txog carboxymethyl pawg los ntawm etherification, tsim carboxymethylcellulose. Carboxymethyl pawg ua rau CMC yaj hauv dej thiab muab cov polymer cov yam ntxwv tshwj xeeb.
2. Hmoov txhuv nplej siab:
Starch yog ib hom carbohydrate uas muaj cov glucose units txuas nrog los ntawm α-1,4-glycosidic bonds. Nws yog ib hom polymer ntuj uas pom muaj nyob rau hauv cov nroj tsuag uas siv ua ib qho chaw khaws cia lub zog. Cov molecules Starch feem ntau muaj ob hom glucose polymers: amylose (cov saw hlau ncaj) thiab amylopectin (cov qauv saw hlau ceg).
Cov khoom siv lub cev:
1. Carboxymethylcellulose (CMC):
Kev yaj: CMC yaj tau hauv dej vim muaj cov pab pawg carboxymethyl.
Viscosity: Nws qhia tau tias muaj viscosity siab hauv cov kua, ua rau nws muaj txiaj ntsig zoo rau ntau yam kev siv xws li kev ua zaub mov thiab tshuaj.
Kev Pom Tseeb: Cov tshuaj CMC feem ntau yog pob tshab.
2. Hmoov txhuv nplej siab:
Kev yaj tau: Cov hmoov txhuv nplej tsis yaj hauv dej. Nws yuav tsum tau ua kom gelatinization (ua kom sov hauv dej) kom yaj tau.
Viscosity: Cov hmoov txhuv nplej siab muaj viscosity, tab sis feem ntau nws qis dua CMC.
Pob tshab: Cov hmoov txhuv nplej siab feem ntau yuav tsis pom tseeb, thiab qhov degree ntawm opacity yuav txawv nyob ntawm hom hmoov txhuv nplej siab.
qhov chaw:
1. Carboxymethylcellulose (CMC):
CMC feem ntau yog ua los ntawm cellulose los ntawm cov nroj tsuag xws li ntoo pulp lossis paj rwb.
2. Hmoov txhuv nplej siab:
Cov nroj tsuag xws li pob kws, nplej, qos yaj ywm thiab mov muaj hmoov txhuv nplej siab heev. Nws yog ib qho khoom xyaw tseem ceeb hauv ntau yam khoom noj tseem ceeb.
Txheej Txheem Tsim Khoom:
1. Carboxymethylcellulose (CMC):
Kev tsim cov CMC cuam tshuam nrog cov tshuaj etherification ntawm cellulose nrog chloroacetic acid hauv alkaline medium. Cov tshuaj tiv thaiv no ua rau cov hydroxyl pawg hauv cellulose hloov nrog carboxymethyl pawg.
2. Hmoov txhuv nplej siab:
Kev rho cov hmoov txhuv nplej siab yog kev rhuav cov hlwb ntawm cov nroj tsuag thiab cais cov hmoov txhuv nplej siab. Cov hmoov txhuv nplej siab uas rho tawm tuaj yeem ua ntau yam txheej txheem, suav nrog kev hloov kho thiab kev ua kom cov gelatinization, kom tau txais cov yam ntxwv xav tau.
Lub Hom Phiaj thiab Daim Ntawv Thov:
1. Carboxymethylcellulose (CMC):
Kev lag luam zaub mov: CMC yog siv los ua cov khoom siv tuab, stabilizer thiab emulsifier hauv ntau yam khoom noj.
Cov Tshuaj: Vim nws cov khoom khi thiab tawg, nws pom siv rau hauv cov tshuaj formulations.
Kev Tshawb Fawb Roj: CMC yog siv rau hauv cov kua roj drilling los tswj rheology.
2. Hmoov txhuv nplej siab:
Kev lag luam zaub mov: Hmoov txhuv nplej siab yog cov khoom tseem ceeb ntawm ntau yam khoom noj thiab siv los ua cov khoom ua kom tuab, cov khoom ua kom gelling thiab cov khoom ruaj khov.
Kev lag luam textile: Cov hmoov txhuv nplej siab yog siv rau hauv kev ntsuas qhov loj ntawm cov ntaub kom muab cov ntaub tawv.
Kev lag luam ntawv: Hmoov txhuv nplej siab yog siv rau hauv kev ua ntawv kom ua rau daim ntawv muaj zog thiab txhim kho cov yam ntxwv ntawm qhov chaw.
Txawm hais tias CMC thiab hmoov txhuv nplej siab yog ob qho tib si polysaccharides, lawv muaj qhov sib txawv hauv cov qauv molecular, cov khoom siv lub cev, cov peev txheej, cov txheej txheem tsim khoom thiab cov ntawv thov. CMC yog dej-soluble thiab viscous heev thiab feem ntau nyiam siv rau hauv cov ntawv thov uas xav tau cov khoom no, thaum hmoov txhuv nplej siab yog ib qho polysaccharide ntau yam siv dav hauv cov khoom noj, textile thiab ntawv lag luam. Kev nkag siab txog cov kev sib txawv no yog qhov tseem ceeb rau kev xaiv cov polymer tsim nyog rau cov ntawv thov kev lag luam thiab kev lag luam tshwj xeeb.
Lub sijhawm tshaj tawm: Lub Ib Hlis-12-2024