Starch ether thiab cellulose ether yog ob hom ether derivatives siv ntau yam lag luam, tshwj xeeb hauv kev tsim kho thiab txheej txheem. Thaum lawv qhia qee qhov sib xws hauv cov dej-soluble polymers nrog cov khoom siv thickening thiab ruaj khov, muaj cov qauv sib txawv ntawm lawv, feem ntau hauv lawv cov qauv tshuaj lom neeg.
Starch Etht:
1. Source:
- Lub hauv paus chiv keeb: hmoov txhuv nplej siab ether yog los ntawm cov hmoov txhuv nplej siab, uas yog cov carbohydrate pom hauv cov nroj tsuag. Cov hmoov txhuv nplej siab yog feem ntau rho tawm los ntawm cov qoob loo zoo li pob kws, qos yaj ywm, lossis Cassaginga.
2. Cov qauv tshuaj:
- Cov duabsiab polymer: Cov hmoov txhuv nplej siab yog polysaccharide muaj cov khoom muaj txiaj ntsig sib txuas los ntawm Glycosidic Bonds. Cov hmoov txhuv nplej siab tau hloov kho cov hmoov txhuv nplej siab ntawm cov hmoov txhuv nplej siab, uas hydroxyl pawg ntawm cov hmoov txhuv nplej siab los hloov nrog cov pab pawg ether.
3. Daim Ntawv Thov:
- Kev lag luam tsim kev tsim kho: Cov neeg muaj kev ua kom muaj nyob hauv kev tsim kho kev tsim kho raws li cov khoom siv ntxiv rau cov khoom lag luam gypsum, cov khoom lag luam, thiab cov khoom siv Maas. Lawv pab txhawb kom txhim kho kev ua haujlwm, kom dej tuav, thiab cov nplaum.
4. Hom Hom:
- Hydroxyyl Starch (HES): Ib hom hmoov txhuv nplej siab ether yog hydroxyethyl pawg yog qhia los hloov cov hmoov txhuv nplej siab.
Cellulose ether:
1. Source:
- Lub keeb kwm ntuj: Cellulose ether yog muab los ntawm cellulose, lub ntuj polymer pom nyob rau hauv lub xovtooj ntawm cov nroj tsuag. Nws yog ib qho tseem ceeb tivthaiv ntawm cov nroj tsuag ntawm tes thiab raug rho tawm los ntawm cov chaw xws li cov ntoo pulp lossis paj rwb.
2. Cov qauv tshuaj:
- Polymer muaj pes tsawg leeg: Cellulose yog txoj cai polymer muaj cov dej qab zib txuas nrog los ntawm β-1,4-glycosidic bonds. Cellulose Cov neeg muaj kev hais ua los ntawm cellulose, qhov twg cov pawg hydroxyl ntawm cellulose molecule tau hloov kho nrog cov pab pawg ether.
3. Daim Ntawv Thov:
- Kev tsim kho: Cellulose muaj cov neeg muaj kev pab hais tias muaj kev tsim kho thoob plaws hauv kev tsim kho, zoo ib yam li cov hmoov txhuv nplej siab. Lawv tau siv hauv cov khoom tso cai ua ke, cov nplaum sib xyaw ua ke, thiab cov khoom lag luam ua kom zoo nkauj los txhim kho cov dej cia, ua haujlwm, thiab adhesion.
4. Hom Hom:
- Hydroxyethyl cellulose (HEC): ib hom cellulose ether yog hydroxyethyl pawg yog qhia los hloov cov qauv cellulose.
- Methyl cellulose (MC): Lwm hom yog methyl cellulose, qhov chaw methyl pawg tau qhia.
Qhov sib txawv tseem ceeb:
1. Source:
- Cov hmoov txhuv nplej siab ether yog los ntawm cov hmoov txhuv nplej siab, carbohydrate pom hauv cov nroj tsuag.
- Cov cellulose ether yog muab los ntawm cellulose, ib qho tseem ceeb tivthaiv ntawm cov nroj tsuag ntawm tes.
2. Cov qauv tshuaj:
- Lub hauv paus polymer rau cov hmoov txhuv nplej ether yog cov hmoov txhuv nplej siab, ib polysaccharide muaj cov dej qab zib.
- Lub hauv paus polymer rau cellulose ether yog cellulose, ib txoj kab polymer muaj cov roj haruc.
3. Daim Ntawv Thov:
- Ob hom kev ua kom siv tau hauv kev tsim kho kev tsim kho, tab sis cov ntawv thov tshwj xeeb thiab cov qauv yuav txawv.
4. Hom Hom:
- Hydroxyyl Starch (HES) thiab hydroxyethyl cellulose (HEC) yog cov piv txwv ntawm cov derivatives no ether.
Thaum cov hmoov txhuv nplej siab ether thiab cellulose ether yog ob lub solomle polymers siv los ua cov tshuaj ntxiv hauv ntau cov ntawv thov, thiab cov qauv tshuaj sib txawv tshwj xeeb. Cov kev sib txawv no tuaj yeem cuam tshuam lawv cov kev ua tau zoo hauv cov kev ua yeeb yam thiab cov ntawv thov.
Lub Sijhawm Post: Jan-06-2024