Cov txheej txheem:
Video: Dab tsi yog cationic dyes?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cationic dyes yog dyes uas tuaj yeem raug rho tawm mus rau hauv qhov muaj txiaj ntsig zoo ions hauv cov tshuaj aqueous. Cationic xim yog tus mob siab rau xim rau kev tuag cov acrylic fiber. Tsis tas li ntawd, nws tseem tuaj yeem siv los hloov kho cov dyeing thiab luam ntawv ntawm polyester thiab nylon. Nws yog tsuas yog siv rau dyeing cov polyacrylonitrile fibers.
Ib yam li ntawd, anionic thiab cationic dyes yog dab tsi?
Muaj ob hom dyes : cationic (basic) thiab anionic (acidic). Cationic dyes muaj qhov zoo tshaj plaws chromophore thiab affinity siab rau cov khoom tsis zoo ntawm cov cellular. Txij li cov kab mob nqa tus nqi tsis zoo ntawm pH 7, xws li dyes tuaj yeem siv los stain cov hlwb ncaj qha.
Tom qab, lo lus nug yog, dab tsi yog cationic ntaub? Cationic paj rwb yog paj rwb uas tau hloov kho kom muaj kev ruaj khov cationic , los yog zoo, them. Paj rwb tuaj yeem kho nrog cov cationic txheej txheem nyob rau hauv fiber, xov, los yog ntaub daim ntawv.
Tsis tas li ntawd, cov xim sib txawv yog dab tsi?
Ntau chav kawm thiab hom dyes tau teev tseg hauv qab no:
- Acid Dyes.
- Ntuj Dyes.
- Basic (Cationic) Dyes.
- Synthetic Dyes.
- Direct (substantive) Dyes.
- Disperse Dyes.
- Sulfur Dyes.
- Pigment Dyes.
Dye yog dab tsi?
Feem ntau ntawm ntuj dyes Nws yog muab los ntawm cov nroj tsuag: keeb kwm, berries, bark, nplooj, ntoo, fungi thiab lichens. Feem ntau dyes yog hluavtaws, i.e., yog txiv neej- ua los ntawm petrochemicals.
Pom zoo:
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Dab tsi 2 dyes siv los ua cov khoom xyaw hauv EMB Agar?
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Cov xim dyes ua li cas?
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