Methyl cellulose (MC) ua los ntawm cov khoom ntuj tsim

Methyl cellulose (MC) yog ib qho derivative ntawm cellulose, uas yog ib qho polymer ntuj pom nyob rau hauv cov phab ntsa cell ntawm cov nroj tsuag. Cellulose yog ib qho ntawm cov organic compounds muaj ntau tshaj plaws hauv ntiaj teb, feem ntau yog los ntawm cov ntoo pulp thiab paj rwb fibers. MC yog synthesized los ntawm cellulose los ntawm ntau yam tshuaj reactions uas cuam tshuam nrog kev hloov pauv ntawm hydroxyl pawg (-OH) hauv cellulose molecule nrog methyl pawg (-CH3).

Txawm hais tias MC nws tus kheej yog ib qho tshuaj sib xyaw uas tau hloov kho los ntawm tshuaj lom neeg, nws cov khoom siv raw, cellulose, yog los ntawm cov khoom ntuj. Cellulose tuaj yeem rho tawm los ntawm ntau yam khoom siv cog, suav nrog ntoo, paj rwb, hemp, thiab lwm yam nroj tsuag fibrous. Cov cellulose raug ua kom tshem tawm cov khoom tsis huv thiab hloov nws mus rau hauv daim ntawv siv tau rau kev tsim MC.

Thaum tau txais cov cellulose, nws dhau los ntawm etherification los qhia cov pab pawg methyl rau ntawm cov cellulose backbone, ua rau muaj methyl cellulose. Cov txheej txheem no suav nrog kev kho cellulose nrog cov khoom sib xyaw ntawm sodium hydroxide thiab methyl chloride nyob rau hauv cov xwm txheej tswj hwm.

Cov methyl cellulose uas tshwm sim yog cov hmoov dawb mus rau dawb tawm, tsis muaj ntxhiab, thiab tsis muaj saj uas yaj tau hauv dej txias thiab ua cov kua nplaum. Nws siv dav hauv ntau yam lag luam, suav nrog zaub mov, tshuaj, kev saib xyuas tus kheej, thiab kev tsim kho, rau nws cov khoom ua kom tuab, ruaj khov, thiab ua zaj duab xis.

Txawm hais tias MC yog ib qho tshuaj uas tau hloov kho los ntawm cov tshuaj lom neeg, nws yog los ntawm cov cellulose ntuj, ua rau nws yog ib qho kev xaiv biodegradable thiab tus phooj ywg ib puag ncig rau ntau daim ntawv thov.