I-ethylcellulose yenziwe ngani?

I-Ethyl cellulose iyi-polymer yokwenziwa etholakala ku-cellulose yemvelo, ingxenye evamile yesakhiwo sezindonga zamaseli ezitshalo. Ukukhiqizwa kwe-ethyl cellulose kuhilela ukuguqulwa kwamakhemikhali e-cellulose yemvelo kusetshenziswa i-ethyl chloride kanye ne-catalyst ukukhiqiza i-ethyl ether derivative of cellulose.

Inqubo iqala ngokuhlanzwa kwe-cellulose emithonjeni yezitshalo, njenge-pulp yokhuni noma ukotini. I-cellulose ehlanzekile ibe isincibilika engxubeni yezincibilikisi, njenge-ethanol namanzi, ukuze kwakheke isixazululo se-viscous. I-Ethyl chloride ibe isifakwa esixazululweni, kanye ne-catalyst, eyenza kube lula ukusabela phakathi kwe-cellulose ne-ethyl chloride.

Ngesikhathi sokusabela, i-molecule ye-ethyl chloride ithatha indawo yamanye amaqembu e-hydroxyl ochungechungeni lwe-cellulose, okuholela ekwakhekeni kwe-ethyl cellulose. Izinga le-ethoxylation, noma inani lamaqembu e-ethyl anamathiselwe kuyunithi ngayinye ye-glucose ochungechungeni lwe-cellulose, lingalawulwa ngesikhathi sokusabela ukuze kukhiqizwe i-ethyl cellulose enezici ezihlukene nezici zokuncibilika.

Ngemuva kokuthi ukusabela sekuqediwe, i-ethyl cellulose ewumphumela iyahlanzwa futhi yomiswe ukuze kukhishwe noma yiziphi izincibilikisi ezisele noma ukungcola. Umkhiqizo wokugcina uyimpushana emhlophe noma ephuzi encibilika ezinhlobonhlobo zezinto eziphilayo, kodwa ezingancibiliki emanzini.

Sekukonke, i-ethyl cellulose iyi-polymer yokwenziwa etholakala ku-cellulose yemvelo ngenqubo yokuguqulwa kwamakhemikhali ehlanganisa ukufakwa kwamaqembu e-ethyl ochungechungeni lwe-cellulose.