Cellulose yog ib qho chaw nyob txhua qhov chaw uas muaj nyob hauv cov xwm txheej, ua lub luag haujlwm tseem ceeb hauv cov qauv thiab kev ua haujlwm ntawm ntau yam kab mob thiab ecosystems. Nws cov khoom tshwj xeeb thiab kev siv ntau yam tau ua rau muaj ntau yam kev siv thoob plaws hauv kev lag luam, ua rau nws yog ib qho tseem ceeb tshaj plaws biopolymers.
1.Qhov chaw ntawm Cellulose:
Cellulose feem ntau yog muab los ntawm cov phab ntsa ntawm cov nroj tsuag, ua haujlwm raws li cov qauv hauv daim ntawv ntawm microfibrils. Nws muaj nyob rau hauv lub cell phab ntsa ntawm ntau yam nroj tsuag ntaub so ntswg, xws li ntoo, paj rwb, hemp, flax, jute, thiab ntau lwm tus neeg. Cov peev txheej no sib txawv hauv cov ntsiab lus cellulose thiab lub koom haum tsim, cuam tshuam rau lawv qhov tsim nyog rau kev siv sib txawv.
Ntoo: Ntoo yog ib qho ntawm cov khoom siv ntau tshaj plaws ntawm cellulose, nrog cov ntoo xws li ntoo thuv, ntoo qhib, thiab spruce uas muaj qhov tseem ceeb ntawm cov biopolymer. Nws ua haujlwm tseem ceeb hauv cov phab ntsa ntawm tes ntawm cov ntaub so ntswg, muab lub zog thiab rigidity rau cov nroj tsuag.
Paj Rwb: Cov paj rwb fibers yog tsim los ntawm cellulose nkaus xwb, ua rau lawv cov khoom tseem ceeb rau kev tsim textile. Qhov ntev, fibrous strands ntawm cellulose pab txhawb lub zog, absorbency, thiab breathability ntawm paj rwb fabrics, ua rau lawv zoo tagnrho rau cov khaub ncaws thiab tsev textiles.
Hemp thiab Flax: Hemp thiab flax fibers kuj yog nplua nuj ntawm cellulose thiab tau siv keeb kwm rau textile ntau lawm. Cov fibers ntuj no muaj cov kav ntev, noo noo-wicking zog, thiab ib puag ncig sustainability, ua rau lawv nrov nyob rau hauv eco-friendly textiles.
Lwm cov khoom siv cog: Dhau li ntawm qhov tau hais los saum no, cellulose tuaj yeem muab rho tawm los ntawm ntau yam khoom siv cog xws li xyoob, qab zib bagasse, pob kws stover, thiab cov khoom ua liaj ua teb. Cov lwm cov peev txheej no pab txhawb rau kev tsim cov khoom lag luam cellulose kom ruaj khov thaum txo kev cia siab ntawm cov ntoo uas tau los ntawm cellulose.
2.Properties ntawm Cellulose:
Cellulose nthuav tawm ntau yam khoom tshwj xeeb uas ua rau nws cov kev siv dav dav:
Biodegradability: Cellulose yog biodegradable, txhais tau tias nws tuaj yeem tawg los ntawm cov kab mob mus rau hauv cov tebchaw yooj yim xws li carbon dioxide thiab dej. Cov cuab yeej no ua rau cov ntaub ntawv cellulose-raws li ib puag ncig tus phooj ywg, tshwj xeeb tshaj yog hauv cov ntawv thov uas muaj kev txhawj xeeb txog kev pov tseg thiab pov tseg.
Hydrophilicity: Cellulose muaj kev sib raug zoo rau cov dej molecules vim muaj cov hydroxyl pawg hauv nws cov qauv molecular. Qhov xwm txheej hydrophilic no ua rau cov khoom siv cellulose nqus thiab khaws cov dej, ua rau lawv tsim nyog rau kev siv xws li papermaking, hnav khaub ncaws, thiab khoom tu cev.
Mechanical Strength: Cellulose fibers muaj zoo heev mechanical zog, muab durability thiab resilience rau cov ntaub ntawv uas ua los ntawm lawv. Cov cuab yeej no muaj txiaj ntsig tshwj xeeb hauv cov ntawv thov kom muaj kev ncaj ncees, xws li hauv textiles, composites, thiab ntawv cov khoom.
Rov ua dua tshiab thiab Sustainable: Raws li lub ntuj biopolymer muab los ntawm cov nroj tsuag, cellulose yog txuas dua tshiab thiab ruaj khov. Nws qhov kev tsim khoom tsis vam khom rau cov peev txheej fossil roj nplua nuj thiab tuaj yeem ua rau cov pa roj carbon sequestration thaum tau los ntawm kev tswj hwm hav zoov thiab kev ua liaj ua teb.
3.Kev siv ntau yam ntawm Cellulose:
Cellulose pom kev siv dav hauv ntau lub lag luam, vim nws cov khoom tshwj xeeb thiab ntau yam:
Ntawv thiab Ntim: Tej zaum qhov zoo tshaj plaws daim ntawv thov ntawm cellulose yog nyob rau hauv zus tau tej cov ntawv thiab cardboard. Cellulose fibers yog cov khoom siv raw khoom siv hauv papermaking, muab cov qauv txheej txheem thiab cov yam ntxwv saum npoo tsim nyog rau kev sau ntawv, luam ntawv, thiab ntim cov ntawv thov. Tsis tas li ntawd, cellulose-based ntim cov ntaub ntawv muab cov kev hloov hauv eco-phooj ywg rau cov ntim yas, ua rau muaj kev ruaj ntseg.
Textiles thiab Apparel: Cellulose fibers los ntawm paj rwb, hemp, flax, thiab lwm yam nroj tsuag yog spun rau hauv yarns thiab woven los yog knitted rau hauv fabrics rau khaub ncaws, tsev textiles, thiab industrial daim ntaub ntawv. Paj rwb, tshwj xeeb, yog siv dav siv cellulose-raws li fiber ntau hauv kev lag luam textile vim nws softness, breathability, thiab versatility. Kev tsim kho tshiab hauv kev ua cov txheej txheem kuj tau coj mus rau kev tsim cov cellulose-raws li fibers xws li lyocell thiab modal, uas muab cov khoom zoo dua qub thiab cov txiaj ntsig ib puag ncig.
Biomedical Materials: Cellulose-based cov ntaub ntawv muaj cov ntawv thov hauv biomedical field, nrog rau cov ntaub qhwv lub qhov txhab, cov ntaub so ntswg engineering scaffolds, cov tshuab xa tshuaj, thiab kev cog qoob loo. Biocompatibility thiab biodegradability ntawm cellulose ua rau nws haum rau cov kev siv xws li, qhov twg kev sib cuam tshuam nrog cov kab mob lom yog qhov tseem ceeb rau kev ua haujlwm thiab kev nyab xeeb.
Khoom noj khoom haus thiab Pharmaceutical Industries: Cellulose derivatives xws li cellulose ethers (piv txwv li, methylcellulose, carboxymethylcellulose) thiab cellulose esters (xws li, cellulose acetate, cellulose nitrate) pom siv raws li thickeners, stabilizers, emulsifiers, thiab films-forming agents. Cov cellulose-raws li additives no txhim kho kev ntxhib los mos, txee ruaj khov, thiab palatability ntawm cov khoom noj khoom haus thaum ua kom cov tshuaj xa khoom zoo thiab ntau npaum li cas hauv cov tshuaj formulations.
Lub zog tauj dua tshiab thiab Biofuels: Cellulose-nplua nuj biomass ua cov khoom noj rau kev tsim lub zog tauj dua tshiab thiab biofuels los ntawm cov txheej txheem xws li biomass gasification, fermentation, thiab enzymatic hydrolysis. Cellulosic ethanol, muab tau los ntawm cellulose degradation, muaj lwm txoj hauv kev rau cov fossil fuels thiab pab txo qis cov pa hluav taws xob hauv tsev.
Composite Materials: Cellulose fibers tau muab tso rau hauv cov ntaub ntawv sib xyaw los txhim kho cov khoom siv xws li lub zog, tawv, thiab kev cuam tshuam. Cov cellulose-based composites pom cov ntawv thov hauv cov khoom siv tsheb, cov khoom siv, cov rooj tog zaum, thiab cov khoom siv ncaws pob, muab cov khoom sib tw thiab eco-friendly rau cov khoom siv.
Cellulose, raws li ib tug natural biopolymer ntau nyob rau hauv cov nroj tsuag cell phab ntsa, muaj cov yam ntxwv tshwj xeeb thiab ntau yam kev siv nyob rau hauv industries. Los ntawm papermaking thiab textiles mus rau biomedical cov ntaub ntawv thiab lub zog tauj dua tshiab, cellulose pab txhawb kev txhim kho thiab kev tsim kho tshiab hauv ntau yam. Kev tshawb fawb txuas ntxiv thiab kev txhim kho thev naus laus zis hauv kev ua cov cellulose thiab kev siv tau cog lus tias yuav nthuav dav nws cov ntawv thov thiab daws cov teeb meem thoob ntiaj teb ntsig txog kev txuag peev txheej thiab kev ruaj ntseg ib puag ncig. Raws li lub zej zog tseem ceeb tshaj qhov tseem ceeb ntawm kev ruaj khov thiab kev paub txog eco, cov khoom siv cellulose tau npaj los ua lub luag haujlwm tseem ceeb hauv kev txhim kho lub vaj zaub ntsuab thiab muaj txiaj ntsig zoo rau yav tom ntej.
Post lub sij hawm: Mar-06-2024