Momwe mungapangire ma celluuse ether?

Kupanga kwa cellulose kumafuna kusintha kwa cellulose kokasintha, komwe kumachokera ku zamkati zamkati kapena thonje, kudzera mwa mitundu ingapo yamankhwala. Mitundu yodziwika bwino ya cellulose yophatikiza me cellulose (Mc), hydroxethyl celloull (HPM), Carxymethyl cellose (cmc), ndi ena. Njira yeniyeniyo imatha kukhala yosiyanasiyana malinga ndi cellulose yomwe imapangidwa, koma magawo ambiri ali ofanana. Nayi mwachidule:

Njira Zigawo Zopangira Cellulose Et:

1 ..

• Zinthu zoyambira ndi cellulose, nthawi zambiri zimatengedwa ku mitengo yamtengo kapena thonje. Cellulose nthawi zambiri imakhala mwanjira ya zamkati yoyeretsa cellulose.

2. Alkalization:

• Cellulose imathandizidwa ndi yankho la alkaline, monga sodium hydroxide (Naoh), kuti ayambitse magulu a hydroxyl pa unyolo wa cellulose. Gawo la alkilization ndilofunikira kuti muchepetse.

3.

• Ma cellulid cellulose amayesedwa, pomwe magulu osiyanasiyana a ether amayambitsidwa pamphepete mwa nyanjayo. Mtundu wapadera wa gulu la etherted (methyl, hydroxethyl, hydroxypropyl, carboxymethyl, a Carboxymethyl, etc.) zimatengera ether.
• Njira yobwezera imaphatikizapo zomwe wapasintha cellulose ndi zokonza zoyenera, monga:
  • Kwa methyl cellulose (MC): Chithandizo ndi dimethyl sulfate kapena methyl chloride.
  • Kwa hydroxyethyl cellulose (hec): Chithandizo ndi ethylene oxide.
  • Kwa hydroxypropyl methy cellose (hpmc): Chithandizo ndi Propylene Oxide ndi Methyl chloride.
  • Kwa carboxymethyl cellulose (cmc): Chithandizo ndi sodium chloroceate.

4..

• Pambuyo pakutha, cellulose yochokera ku cellulose imatha kulowererapo kuti ichotse anthu onse otsalira a alkali. Chogulitsacho chimatsukidwa kuti muchotse zodetsa komanso zopangidwa ndi zinthu.

5. Kuyanika ndi Kuthetsa:

• Ma ethel ether amawuma kuti achotse chinyezi chambiri kenako ndikulowerera mu ufa wabwino. Kukula kwa tinthu kumatha kulamulidwa kutengera ntchito yomwe mukufuna.

6. Kuwongolera kwapamwamba:

• Chithandizo chomaliza cha Ether chimayesedwa moyenera kuti chitsimikizire kuti chikukwaniritsa zojambulajambula, kuphatikizapo mafayilo, chinyezi, tinthu tating'onoting'ono tomwe timagawana, komanso zinthu zina zofunika.

Ndikofunikira kudziwa kuti kupanga kwa cellulose kumachitika ndi opanga apadera pogwiritsa ntchito njira zolamulidwira. Mikhalidwe yodziwikayo, ma reagents, ndi zida zomwe zimagwiritsidwa ntchito zimatha kusiyanasiyana malinga ndi zomwe akufuna kuti adziwe za cellulose ndi zomwe mukufuna. Kuphatikiza apo, njira zotetezera ndizofunikira panthawi yosinthira mankhwala.