Kodi ethylcellulose amapangidwa kuchokera ku chiyani?

Ethyl cellulose ndi polymer yopangidwa kuchokera ku cellulose yachilengedwe, gawo lodziwika bwino la makoma a cellulose. Kupanga kwa ethyl cellulose kumaphatikizapo kusintha kwa mankhwala a cellulose achilengedwe pogwiritsa ntchito ethyl chloride ndi chothandizira kupanga ethyl ether yochokera ku cellulose.

Njirayi imayamba ndi kuyeretsedwa kwa cellulose kuchokera ku zomera, monga zamkati kapena thonje. Ma cellulose oyeretsedwawo amasungunuka m'chisakanizo cha zosungunulira, monga ethanol ndi madzi, kuti apange yankho la viscous. Ethyl chloride ndiye anawonjezera yankho, pamodzi ndi chothandizira, amene facilitates anachita pakati pa mapadi ndi ethyl kolorayidi.

Pa zomwe zimachitika, molekyulu ya ethyl chloride imalowa m'malo mwa magulu ena a hydroxyl pa unyolo wa cellulose, zomwe zimapangitsa kupanga ethyl cellulose. Mlingo wa ethoxylation, kapena kuchuluka kwa magulu a ethyl omwe amalumikizidwa pagawo lililonse la shuga mu unyolo wa cellulose, amatha kuwongoleredwa pakuchitapo kanthu kuti apange ethyl cellulose yokhala ndi katundu wosiyanasiyana komanso kusungunuka.

Pambuyo pomaliza, ethyl cellulose imatsukidwa ndikuuma kuchotsa zosungunulira zotsalira kapena zonyansa. Chomaliza chomaliza ndi ufa woyera kapena wachikasu womwe umasungunuka m'magulu osiyanasiyana a organic solvents, koma osasungunuka m'madzi.

Ponseponse, ethyl cellulose ndi polima yopanga yomwe imachokera ku cellulose yachilengedwe kudzera munjira yosinthira mankhwala yomwe imaphatikizapo kuwonjezera magulu a ethyl ku unyolo wa cellulose.