Txheej txheem ib txwm ua
Cov khoom siv raw ua ntej:
Ntoo → CHIPPING → Chav Thauj Khoom Noj (2.5MPA, 200 degree)
Paj Rwb Linter ← Alkali Boiling (18% NUAH, 120 Qib)
Purification theem:
Sulfite txoj kev: so₂ + ca (hso₃) ₂ kho kom tshem tawm lignin
Kraft method: NaOH+Na₂S cooking, white liquor recovery rate>95%
Cov txheej txheem tshuaj dawb:
ECF (Theem Chlorine-Free Rleching-Free Tshuaj Dawb): Clo₂ Peb-theem tshuaj dawb, whiteness ntau dua los yog sib npaug rau 88% ISO
TCF (tag nrho cov chlorine-dawb tshuaj dawb): o₃ + h₂oo sib txuas ua ke
Tshuab Tsim Kho Tshuab
Ionic liquid method: using [BMIM]Cl solvent, dissolution efficiency> 90%
Enzymatic Hydrolysis: Synergistic tsis pom zoo ntawm cellulase (piv txwv / clh / BGL), hloov dua siab tshiab 85%
Nanocellulose:
Qauv oxidation: Ua cov CNF (cellulose nanofibers) nrog lub cheeb ntawm 3-5} nm
Acid Hydrolysis Txuj Ci: Ua Rau Cnc (Cellulose Nanocrystals) Nrog Ib Txoj Kab Ntawm 10-20 nm
Lub ntsiab derivative Pawg
Peb tab tom nrhiav kev sib koom tes sib koom tes kom nthuav peb txoj kev lag luam.
Cellulose acetat (ca):
Siv rau ntawm coveyglass thav ntawv thiab cov yeeb yaj kiab thaum cov degree hloov chaw yog 2. 4-2. 9
Qhov kev ua yeeb yaj kiab zoo tshaj plaws-ua yog thaum lub ntsiab lus acetyl yog {1}}%.
Cellulose nitrate (CN):
Cov ntsiab lus nitrogen ntawm 10. 7-12. 3% yog siv rau txheej txheej
Cov ntsiab lus nitrogen ntawm 12. 4-13. 5% yog qib gunpowder
Carboxymethyl cellulose (CMC):
Ds =0. {7-1. 2, Viscosity {3}} mpa mpa mpa mpa mpa mpa mpa
Khoom noj khoom haus qib tub ceev xwm ntau dua los yog sib npaug rau 99.5%
HydroxyPropyyl methylcellulose (HPMC):
Methoxy cov ntsiab lus 19-24%, Hydroxyprropyl 4-12%
Gel kub 60-90 degree kho tau
Catedic cellulose: Kev Kho Mob Qoob Loos rau kev kho kom muaj pov tseg
Thermosensitive cellulose: grafted nrog n-isopropylacrylamide, LCST≈32 Qib
Chaw thov
Kev hnav ris tsho:
Bacterial cellulose wound dressing: air permeability>500g/m²/24h
Hemostatic paj rwb: absidbs ntshav mus txog rau 15 zaug nws tus kheej hnyav
01
Cov cab kuj:
Cellulose Jearchpheres (taub 50-200 μm) thauj khoom nrog dxorubicin
Hnyuv-phiaj paj cov kaus mom (pH-rhiab)
02
Kev noj haus fiber ntau ntxiv:
Microcrystalline Cellulose (MCC): Dej Tuav Lub Peev 6-8 g / g
Anti-Cakake Tus Neeg Sawv Cev: Siv cov zaub mov hmoov (ntau tshaj ntxiv tus nqi 1.5%)
03
Cov Khoom Luam Ntawv 3D:
Bio-Ink: 2% nanocellulose + sodium alginate
Tshuab Luam Ntawv: Cellulose-txhawb nqa Geopolymer Geopolymer
04
Saj zawg zog cov khoom hluav taws xob:
Cellulose nanopaper substrate: dielectric tas li 2. 5-3. 2
Transparent electrode: carbon nanotube/cellulose composite, light transmittance >85%
05
Cim npe nrov: Cov Khoom Siv Khoom Zoo, Tuam Tshoj Cov Khoom Zoo Cellulose Chaw Tsim Tshuaj, Chaw muag khoom, Hoobkas