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

Cellulose yog ib qho ntau yam thiab ntau nplua mias polymer pom nyob rau hauv cov phab ntsa cell ntawm cov nroj tsuag ntawm cov nroj tsuag, muab kev txhawb nqa cov txheej txheem thiab rigidity. Nws yog tsim cov chav dej qab zib txuas nrog ua ke los ntawm β-1,4-glycosidic bonds. Thaum lub cellulose nws tus kheej yog cov homogeneous tshuaj, txoj kev uas nws tau teeb tsa thiab ua tiav hauv ntau yam nrog cov khoom sib txawv thiab cov ntawv thov.

1.Microcrystalline cellulose (MCC):

MCCyog tsim los ntawm kev kho cellulose fibulose nrog cov acids ntxhia, ua rau muaj cov nqaij me me, crystalline.
Siv: Nws yog dav siv raws li cov neeg sawv cev ntawm cov neeg sawv cev, thiab ua tsis tau zoo hauv cov tshuaj thiab cov ntsiav tshuaj. Vim tias nws cov khoom ua piv txwv thiab kev muab hluav taws xob zoo, MCC ua kom cov tshuaj faib khoom thiab tswj cov tshuaj tso tawm.

2.Cellulose acetate:

Cellulose acetate yog tau los ntawm acetylating cellulose nrog acetic anhydride lossis acetic acid.
Siv: Hom ntawm cellulose feem ntau siv nyob rau hauv kev tsim cov fibiles rau textiles, suav nrog khaub ncaws thiab upholstery. Nws tseem ua haujlwm hauv kev tsim cov ntxaij lim dej, duab zaj duab xis, thiab ntau hom kev ua yeeb yam vim nws qhov kev ua kom zoo nkauj.

3.ethylcellulose:

Ethylcellulose tau muab los ntawm cellulose los ntawm kev rov ua nws nrog ethyl chloride lossis ethylene oxide.
Siv: nws cov yeeb yaj kiab zoo tshaj plaws thiab kev tawm tsam rau cov ntsiav tshuaj tawm tsam rau cov ntsiav tshuaj ua kom zoo rau cov ntsiav tshuaj, muab tshuaj tso tawm cov tshuaj tso tawm. Ib qho ntxiv, nws tau ua haujlwm hauv kev tsim cov inks, cov nplaum, thiab txheej tshwj xeeb.

4.hydraulic methylropylulose (HPMC):

HPMCyog synthesized los ntawm hloov cov pab pawg hydroxyl ntawm cellulose nrog methyl thiab hydroxypropropsyl pawg.
Siv: HPMC pabcuam ua cov tuab, stabilizer, thiab emulsifier hauv ntau yam kev lag luam, suav nrog cov khoom noj, tshuaj pleev ib ce, thiab kws tshuaj pleev ib ce. Nws yog feem ntau pom nyob rau hauv cov khoom lag luam saib xyuas ntawm tus kheej xws li lotions, cream, thiab tshuaj pleev, nrog rau cov kua zaub mov zoo li cov kua ntses, hnav khaub ncaws, thiab mis nyuj khov.

5.shodium carboxymethyl cellulose (CMC):

CMC yog tsim los ntawm kev kho cellulose nrog chloroacetic acid thiab alkali.
Siv: Vim nws cov dej ua haujlwm siab thiab thickening cov khoom,Cmcyog cov khoom siv tsis huv uas yog lub stabilizer thiab viscosity hloov hauv cov khoom noj, cov chaw muag tshuaj, thiab cov ntawv thov. Nws yog feem ntau pom nyob rau hauv cov khoom ci, cov khoom noj siv mis nyuj, tshuaj txhuam hniav, thiab xab npum.

6.Nnitrotocellulose:

Nitrocellulose tsim tawm los ntawm nitrating cellulose nrog kev sib xyaw ntawm nitric acid thiab sulfuric acid.
Siv: Nws yog cov haujlwm feem ntau hauv kev tsim khoom ntawm cov khoom tawg, lacquers, thiab celluloid plastics. Nitrocellulose-based lacquers yog nrov nyob rau hauv cov ntoo ua tiav thiab lub cim txheej txheem tsheb vim lawv cov khoom kom ceev thiab muaj kev kub siab.

7.Cacterial cellulose:

Cov kab mob cellulis muaj hluav taws xob yog ua ke los ntawm cov kab mob ntawm cov fermentation.
Siv: nws cov yam ntxwv muaj zog, suav nrog cov ntawv thov cellulose muaj txiaj ntsig zoo li cov kab mob hnav khaub ncaws xws li cov pa luam yeeb, thiab siv tshuaj.

Ntau hom cellulose muaj ntau cov kev thov hla ntau yam lag luam, suav nrog cov tshuaj, cov ntawv nyeem, tshuaj pleev zaub mov, thiab tsim. Txhua yam muaj cov khoom muaj txiaj ntsig uas ua rau nws tsim nyog rau kev pab cov qauv khoom noj kom zoo rau cov khoom noj khoom haus lossis kev pabcuam kom muaj lwm txoj hauv kev ua kom ruaj khov hauv biotechnology. Nkag siab cov kev sib txawv no ua rau xaiv cov qauv cellulose kom tau raws li cov kev xav tau tshwj xeeb hauv cov ntawv thov sib txawv.