Ukukhiqiza I-Hydroxyethyl Cellulose

I-Hydroxyethyl cellulose (HEC) ivamise ukukhiqizwa ngokusabela kwamakhemikhali okulawulwayo phakathi kwe-cellulose ne-ethylene oxide, kulandele i-hydroxyethylation. Inqubo ibandakanya izinyathelo ezimbalwa, ezihlanganisa:

1. Ukulungiswa Kwe-Cellulose: Inqubo yokukhiqiza iqala ngokuhlukaniswa kwe-cellulose emithonjeni evuselelekayo efana ne-wood pulp, ama-linter kakotini, noma eminye imicu yezitshalo. I-cellulose ivamise ukuhlanzwa futhi icutshungulwe ukuze kukhishwe ukungcola kanye ne-lignin, okuholela entweni ye-cellulose ecwengisiswe kakhulu.
2. I-Ethoxylation: Kulesi sinyathelo, impahla ye-cellulose ehlanzekile isabela nge-ethylene oxide phambi kwama-catalysts alkaline ngaphansi kwezimo ezilawulwayo. Ama-molecule e-ethylene oxide engeza emaqenjini e-hydroxyl (-OH) yeketango le-cellulose polymer, okuholela ekwethulweni kwamaqembu e-ethoxy (-OCH2CH2-) kumgogodla we-cellulose.
3. I-Hydroxyethylation: Ngemva kwe-ethoxylation, i-cellulose ethoxylated iphinde iphendule nge-ethylene oxide ne-alkali ngaphansi kwezimo ezilawulwayo ukuze kwethulwe amaqembu e-hydroxyethyl (-OCH2CH2OH) ochungechungeni lwe-cellulose. Lokhu kusabela kwe-hydroxyethylation kushintsha izakhiwo ze-cellulose, kunikeze ukuncibilika kwamanzi kanye ne-hydrophilicity ku-polymer.
4. Ukuhlanzwa Nokomiswa: I-cellulose ye-hydroxyethylated bese ihlanzwa ukuze kukhishwe ama-reactants asele, ama-catalyst, kanye nemikhiqizo evela kungxube yokusabela. I-HEC ehlanziwe ngokuvamile iyawashwa, ihlungwe, futhi yomiswe ukuze kutholwe impushana ecolekile noma ama-granules afanele ukusetshenziswa okuhlukahlukene.
5. Ukugreda Nokupakishwa: Okokugcina, umkhiqizo we-HEC uhlelwa ngokusekelwe ezintweni zawo ezifana ne-viscosity, usayizi wezinhlayiyana, nobumsulwa. Ibe isipakishwa ibe izikhwama, izigubhu, noma ezinye iziqukathi ukuze zihanjiswe futhi zigcinwe.

Inqubo yokukhiqiza ingase ihluke kancane kuye ngebanga elithile kanye nezidingo zekhwalithi zomkhiqizo we-HEC, kanye nezinqubo zokukhiqiza zezinkampani ngazinye. Izinyathelo zokulawula ikhwalithi zivame ukusetshenziswa kuyo yonke inqubo yokukhiqiza ukuze kuqinisekiswe ukungaguquguquki, ukuhlanzeka, nokusebenza komkhiqizo wokugcina we-HEC.

I-HEC isetshenziswa ezimbonini eziningi ezihlanganisa ezokwakha, ezemithi, ukunakekelwa komuntu siqu, nokudla, ngenxa yokuqina kwayo, ukuzinza, nokugcina amanzi.