Cellulosics xa mus rau ib pawg ntawm cov ntaub ntawv muab los ntawm cellulose, uas yog cov organic polymer ntau tshaj plaws nyob rau hauv lub ntiaj teb thiab ib feem tseem ceeb ntawm cov nroj tsuag cell phab ntsa. Cellulose yog linear polysaccharide tsim los ntawm rov qab qab zib units txuas ua ke los ntawm β (1 → 4) glycosidic bonds.

Cov ntaub ntawv cellulosic tuaj yeem muab faib ua ob pawg: ntuj thiab hluavtaws.

Natural Cellulosics:

1. Ntoo Pulp: Muab los ntawm cov ntoo fibers, ntoo pulp yog lub hauv paus ntawm cellulose siv nyob rau hauv ntau yam lag luam, xws li papermaking, textiles, thiab kev tsim kho.
2. Paj Rwb: Paj rwb fibers, tau los ntawm cov noob cov plaub hau ntawm paj rwb, muaj yuav luag tag nrho ntawm cellulose. Paj rwb yog dav siv nyob rau hauv textile ntau lawm vim nws softness, breathability, thiab absorbency.
3. Hemp: Hemp fibers, muab rho tawm los ntawm stems ntawm cov nroj tsuag hemp, muaj cellulose thiab siv nyob rau hauv textiles, papermaking, thiab composite cov ntaub ntawv.
4. Xyoob: Xyoob fibers, tau los ntawm cov paj ntoo ntawm xyoob ntoo, muaj ntau hauv cellulose thiab ua haujlwm hauv textile manufacturing, nrog rau kev tsim cov ntawv thiab cov khoom siv hauv tsev.

Synthetic Cellulosics:

1. Regenerated Cellulose: Ua los ntawm kev tawg ntawm cellulose nyob rau hauv ib qho hnyav, xws li cuprammonium hydroxide los yog viscose, ua raws li extrusion rau hauv coagulation da dej. Regenerated cellulose cov ntaub ntawv muaj xws li viscose rayon, lyocell (Tencel), thiab cellulose acetate.
2. Cellulose Esters: Tshuaj hloov cellulose derivatives tau los ntawm esterification cov tshuaj tiv thaiv nrog ntau cov kua qaub. Cov cellulose esters muaj xws li cellulose acetate, cellulose nitrate (celluloid), thiab cellulose acetate butyrate. Cov ntaub ntawv no pom cov ntawv thov hauv kev tsim cov yeeb yaj kiab, txheej, thiab cov yas.

Kev siv ntawm Cellulosics:

1. Textiles: Cellulosic fibers, ob qho tib si ntuj (xws li, paj rwb, hemp) thiab regenerated (xws li, viscose rayon, lyocell), yog siv dav hauv textile manufacturing rau khaub ncaws, tsev textiles, thiab industrial fabrics.
2. Ntawv thiab Ntim: Ntoo pulp, muab los ntawm cov khoom siv cellulosic, ua cov khoom siv raw rau papermaking thiab ntim khoom. Cellulosic fibers muab lub zog, absorbency, thiab printability rau cov khoom ntawv.
3. Cov ntaub ntawv siv: Cellulosic cov ntaub ntawv, xws li ntoo thiab xyoob, yog siv nyob rau hauv kev tsim kho rau structural Cheebtsam (xws li, ntoo framing, plywood) thiab zoo nkauj tiav (xws li, hardwood flooring, xyoob panels).
4. Cov Khoom Siv Kho Tus Kheej: Cov khoom siv cellulose yog ua haujlwm hauv cov khoom tu tus kheej, suav nrog cov ntaub so ntswg, cov ntaub so ntswg, thiab cov khoom siv tu cev, vim lawv cov softness, lub zog, thiab biodegradability.
5. Khoom noj khoom haus thiab Pharmaceuticals: Cellulose derivatives, xws li microcrystalline cellulose thiab carboxymethylcellulose, yog siv los ua excipients nyob rau hauv cov zaub mov thiab tshuaj formulations rau lawv thickening, stabilizing, thiab binding zog.

Qhov zoo ntawm Cellulosics:

1. Renewable thiab Biodegradable: Cellulosic cov ntaub ntawv yog muab los ntawm cov nroj tsuag txuas dua tshiab thiab yog biodegradable, ua rau lawv ib puag ncig muaj kev hloov pauv rau hluavtaws polymers.
2. Versatility: Cellulosics nthuav tawm ntau yam khoom thiab kev ua haujlwm, tso cai rau ntau yam kev siv thoob plaws kev lag luam, los ntawm textiles mus rau kws tshuaj.
3. Muaj: Cellulose muaj ntau nyob rau hauv cov xwm txheej, nrog rau qhov chaw xws li ntoo thiab paj rwb mus rau xyoob thiab hemp, ua kom muaj kev sib raug zoo thiab txhim khu kev qha rau kev lag luam.
4. Biocompatibility: Ntau cov ntaub ntawv cellulosic yog biocompatible thiab tsis muaj tshuaj lom, ua rau lawv tsim nyog siv rau hauv cov khoom noj, tshuaj, thiab kev siv kho mob.

Hauv cov ntsiab lus, cellulosics suav nrog ntau yam khoom siv tau los ntawm cellulose, muab ntau yam, kev ruaj khov, thiab biocompatibility thoob plaws ntau yam kev siv hauv kev lag luam xws li textiles, papermaking, kev tsim kho, kev saib xyuas tus kheej, thiab kev kho mob.