Methyl cellulose yog ob leeg polysaccharides, txhais tau hais tias lawv yog cov lwg me me ua los ntawm kev rov ua dua ntawm cov qab zib me me lwg me me. Txawm hais tias lawv cov npe zoo sib xws thiab cov lus teb no muaj qhov sib txawv tseem ceeb ntawm lawv cov qauv tshuaj, cov khoom, thiab cov ntawv thov.
1. Cov qauv tshuaj:
Cellulose:
Cellulose yog ib txwm muaj polymer muaj cov chav dej qab zib txuas nrog ua ke los ntawm β-1,4 glycosidic bonds. Cov chav dej zoo no tau npaj nyob rau hauv cov saw ntev ntev, ua kom muaj zog, cov txheej txheem nruj. Cellulose yog ib qho tseem ceeb ntawm cov phab ntsa ntawm tes ntawm cov nroj tsuag thiab algae, muab cov txheej txheem kev txhawb nqa thiab cov qauv sib dhos.
Methyl Cellulose:
Methyl cellulose yog ib qho tseem ceeb ntawm cellulose tau los ntawm kev kho cellulose nrog cov tshuaj alkaline muaj zog thiab methyl chloride. Qhov kev kho mob no ua rau cov pab pawg hydroxyl (-h) hauv cov cellulose molecule nrog cov methyl (-ch3) pawg. Cov qib degree hloov pauv (DS) yog hais txog tus lej nruab nrab ntawm cov pawg hydroxyl hloov ib chav ntawm cov pob zeb hauv lub cev thiab txiav txim siab cov khoom ntawm methyl cellulose. Feem ntau, cov ds ntau dua ua rau nce solubility thiab txo qis gelation kub.
2. Cov Khoom:
Cellulose:
Insoluble hauv dej thiab feem ntau cov emvicolic vim nws cov muaj zog intermolecular hydrogen bonding.
Lub zog siab tensile lub zog thiab txhav txhav, txhawb rau nws lub luag haujlwm hauv kev muab cov txheej txheem kev txhawb nqa cov txheej txheem.
Biodegradable thiab txuas dua tshiab, ua rau nws tus phooj ywg ib puag ncig.
Txwv o nrog muaj peev xwm nyob hauv dej.
Feem ntau, cellulose tsis haum rau kev noj ncaj qha los ntawm tib neeg vim nws qhov xwm txheej tsis txaus ntseeg.
Methyl Cellulose:
Soluble nyob rau hauv dej kom sib txawv degrees nyob ntawm seb tus degree hloov chaw.
Ua pob tshab thiab cov kev daws teeb meem nres hauv dej, ua rau nws muaj txiaj ntsig zoo li cov nplaum, thiab cov neeg sawv cev ua kom tuab hauv cov khoom noj.
Muaj peev xwm los ua cov tshuaj pleev rau ntawm cov chaw kub, uas thim rov qab rau kev daws teeb meem thaum txias. Cov cuab yeej no pom cov ntawv thov hauv cov tshuaj, qhov chaw uas nws tau siv los ua gel matrix rau tswj cov tshuaj tso tawm.
Tsis-toxic thiab feem ntau suav hais tias muaj kev nyab xeeb rau kev noj, feem ntau siv los ua khoom noj ntxiv, emulsifier, lossis thickening tus neeg sawv cev.
3. Daim Ntawv Thov:
Cellulose:
Lub ntsiab tivthaiv thiab daim duab qhia yog vim nws lub zog thiab lub zog.
Siv hauv textiles thiab cov ntaub, xws li paj rwb thiab ntaub pua chaw, rau nws cov ntuj fibers '.
Qhov uas cov khoom siv rau kev tsim cov cellulose derivatives zoo li methyl cellulose, carboxymethyl cellulose (cmc), thiab cellulose acetate.
Pom hauv kev noj zaub mov noj cov tshuaj noj muaj fiber ntau, muab cov nqaij mos rau cov quav thiab zais hauv kev zom.
Methyl Cellulose:
Dav siv nyob rau hauv kev lag luam khoom noj ua ib tus neeg tsis huv, stabilance, thiab emulsifier hauv cov khoom xws li cov kua zaub xws li cov kua zaub, kua zaub, thiab khoom qab zib.
Cov ntawv thov tshuaj suav nrog nws siv los ua cov ntawv sau ua qauv, cov tuab hauv cov kua pleev thiab tshuaj pleev, thiab cov kua txiv ntoo hauv cov kua dej tso tawm.
Siv hauv cov khoom siv tsim kho xws li tshuaj khib thiab Plaster los txhim kho kev ua haujlwm thiab cov nplaum.
Ua haujlwm hauv cov khoom tu tus kheej xws li tshuaj zawv plaub hau thiab muaj cov tshuaj xees rau nws cov khoom siv tuab thiab ruaj khov.
4. Ib puag ncig cuam tshuam:
Cellulose:
Cellulose yog txuas dua tshiab thiab biodegradable, ua rau nws ib puag ncig phooj ywg.
Nws yog cov peev txheej ruaj khov raws li nws tuaj yeem ua tau los ntawm ntau cov khoom siv nroj ntoo, suav nrog cov ntoo lossis cov paj rwb, thiab cov duab paj rwb.
Cov ntaub ntawv ntawm cov cellulose tuaj yeem siv tau lossis ua kom tiav, txo cov kuab paug thiab ib puag ncig.
Methyl Cellulose:
Methyl cellulose yog muab los ntawm cellulose, ua rau nws muaj cov biodegradable thiab ib puag ncig phooj ywg.
Txawm li cas los xij, cov txheej txheem tshuaj siv tshuaj lom neeg yuav tsum tsim cov methyl cellulose cuam tshuam nrog kev siv tshuaj lom xws li alkalis thiab methyl chloride, uas tuaj yeem cuam tshuam ib puag ncig yog tias tsis tswj kom zoo.
Kev tsim nyog pov tseg txoj hauv kev thiab cov kev pab kom zoo yuav tsum muaj kev cuam tshuam ib puag ncig ib puag ncig ib puag ncig uas muaj peev xwm cuam tshuam nrog kev tsim khoom thiab siv cov methyl cellulose.
5. Xaus:
Methyl Cellulose thiab cellulose muaj cov sib txawv nrog cov sib txawv ntawm cov sib txawv hauv lawv cov qauv siv tshuaj lom neeg cov qauv, yam khoom, thiab cov ntawv thov. While cellulose serves as a structural component in plants and finds applications in industries such as papermaking and textiles, methyl cellulose, a derivative of cellulose, is valued for its solubility, gelling properties, and versatility in various industries including food, pharmaceuticals, and construction. Ob qho tib si sib sau muab cov txiaj ntsig tshwj xeeb thiab kev siv, nrog cellulose muaj kev ua haujlwm thiab ntau yam kev ua haujlwm tau zoo thiab kev ua haujlwm hauv cov ntawv thov tshwj xeeb. Nkag siab txog qhov tsis sib xws ntawm methyl cellulose thiab cellulose yog qhov tseem ceeb rau kev siv cov tebchaw no zoo thiab muaj kev lag luam thaum muaj kev cuam tshuam ib puag ncig.
Lub Sijhawm Post: Feb-18-2025