Muaj ntau hom cellulose, thiab dab tsi yog qhov txawv ntawm lawv cov kev siv?

Cellulose yog ntau yam thiab ntau yam ntuj tsim polymer pom nyob rau hauv lub cell phab ntsa ntawm cov nroj tsuag, muab kev txhawb nqa thiab rigidity. Nws yog tsim los ntawm cov piam thaj uas txuas ua ke los ntawm β-1,4-glycosidic bonds. Thaum cellulose nws tus kheej yog ib homogeneous khoom, txoj kev nws yog npaj thiab ua tiav nyob rau hauv ntau hom nrog ntau yam khoom thiab kev siv.

1. Microcrystalline Cellulose (MCC):

MCCyog tsim los ntawm kev kho cellulose fibers nrog mineral acids, ua rau me me, crystalline hais.
Kev Siv: Nws yog dav siv los ua tus neeg sawv cev bulking, binder, thiab disintegrant hauv cov tshuaj formulations xws li ntsiav tshuaj thiab tshuaj ntsiav. Vim nws qhov xwm txheej tsis zoo thiab compressibility zoo heev, MCC ua kom cov tshuaj sib txawv thiab pab txhawb kev tso tshuaj.

2.Cellulose Acetate:

Cellulose acetate yog tau los ntawm acetylate cellulose nrog acetic anhydride los yog acetic acid.
Kev Siv: Hom cellulose no feem ntau siv los tsim cov fibers rau textiles, xws li khaub ncaws thiab upholstery. Nws kuj yog ua hauj lwm nyob rau hauv kev tsim cov luam yeeb lim, yees duab zaj duab xis, thiab ntau hom membranes vim nws semi-permeable xwm.

3. Ethylcellulose:

Ethylcellulose yog muab los ntawm cellulose los ntawm reacting nws nrog ethyl chloride los yog ethylene oxide.
Kev Siv: Nws cov yeeb yaj kiab zoo tshaj plaws thiab ua haujlwm rau cov kuab tshuaj organic ua ethylcellulose haum rau txheej tshuaj ntsiav tshuaj, muab cov tshuaj tso tawm. Tsis tas li ntawd, nws yog ua hauj lwm nyob rau hauv zus tau tej cov inks, adhesives, thiab tshwj xeeb coatings.

4.Hydroxypropyl Methylcellulose (HPMC):

HPMCyog tsim los ntawm kev hloov hydroxyl pawg ntawm cellulose nrog methyl thiab hydroxypropyl pawg.
Kev Siv: HPMC ua haujlwm ua cov thickener, stabilizer, thiab emulsifier hauv ntau yam lag luam, suav nrog zaub mov, tshuaj pleev ib ce, thiab tshuaj. Nws feem ntau pom muaj nyob rau hauv cov khoom tu tus kheej xws li tshuaj pleev, tshuaj pleev, thiab tshuaj pleev, nrog rau hauv cov ntawv thov zaub mov xws li kua ntses, hnav khaub ncaws, thiab dej khov.

5.Sodium Carboxymethyl Cellulose (CMC):

CMC yog tsim los ntawm kev kho cellulose nrog chloroacetic acid thiab alkali.
Siv: Vim nws cov dej solubility siab thiab thickening zog,CMCNws feem ntau yog siv los ua tus stabilizer thiab viscosity modifier hauv cov khoom noj khoom haus, tshuaj, thiab kev siv hauv kev lag luam. Nws feem ntau pom muaj nyob rau hauv cov khoom ci, khoom noj siv mis, tshuaj txhuam hniav, thiab tshuaj ntxuav tes.

6. Nitrocellulose:

Nitrocellulose yog tsim los ntawm nitrating cellulose nrog kev sib xyaw ntawm nitric acid thiab sulfuric acid.
Kev Siv: Nws yog feem ntau ua haujlwm hauv kev tsim cov khoom tawg, lacquers, thiab celluloid plastics. Nitrocellulose-raws li lacquers yog nrov nyob rau hauv wood finishing thiab automotive txheej vim lawv ceev kom qhuav thiab siab gloss zog.

7. Kab mob Cellulose:

Cov kab mob cellulose yog synthesized los ntawm qee hom kab mob los ntawm fermentation.
Kev Siv: Nws cov khoom tshwj xeeb, suav nrog kev ua siab dawb huv, lub zog tensile, thiab biocompatibility, ua rau cov kab mob cellulose muaj txiaj ntsig hauv kev siv tshuaj biomedical xws li cov ntaub qhwv lub qhov txhab, cov ntaub so ntswg engineering scaffolds, thiab kev xa tshuaj.

Ntau hom cellulose muaj ntau hom kev siv thoob plaws ntau yam kev lag luam, suav nrog tshuaj, textiles, zaub mov, tshuaj pleev ib ce, thiab kev tsim khoom. Txhua hom muaj cov khoom tshwj xeeb uas ua rau nws tsim nyog rau kev siv tshwj xeeb, xws li los ntawm kev muab cov qauv kev txhawb nqa hauv cov tshuaj ntsiav tshuaj txhawm rau txhim kho kev ntxhib los mos ntawm cov khoom noj khoom haus los yog ua lwm txoj hauv kev zoo hauv biotechnology. Kev nkag siab txog qhov sib txawv no ua rau muaj kev xaiv xaiv ntawm cov cellulose kom tau raws li cov kev xav tau ntawm kev ua tau zoo hauv ntau daim ntawv thov.