Ama-ether e-cellulose kanye nendlela yokukhiqiza okufanayo

Ukukhiqizwa kweama-ether e-cellulosekuhilela uchungechunge lwezinguquko zamakhemikhali ku-cellulose, okuholela ezinhlotsheni ezinezici ezihlukile. Okulandelayo umbono jikelele wezindlela ezisetshenziswa ekukhiqizeni ama-ether e-cellulose:

1. Ukukhethwa Komthombo We-Cellulose:

• Ama-cellulose ether angatholakala emithonjeni ehlukahlukene njenge-pulp yokhuni, ama-linter kakotini, noma ezinye izinto ezisekelwe ezitshalweni. Ukukhetha umthombo we-cellulose kungathinta izici zomkhiqizo wokugcina we-cellulose ether.

2. Ukudonsa:

• Umthombo we-cellulose udlula ekucubungulweni ukuze kuhlukaniswe imicu ibe yindlela elula ukuyiphatha. Ukucubungulwa kungafezwa ngokusebenzisa imishini, amakhemikhali, noma inhlanganisela yazo zombili izindlela.

3. Ukuhlanzwa:

• I-cellulose e-pulped ihlanzwa ukuze kususwe ukungcola, i-lignin, nezinye izingxenye ezingezona eze-cellulosic. Ukuhlanzwa kubalulekile ukuze kutholakale izinto ze-cellulose ezisezingeni eliphezulu.

4. Ukusebenza kwe-Cellulose:

• I-cellulose ehlanziwe ivuselelwa ngokuyivuvukalisa ngesisombululo se-alkaline. Lesi sinyathelo sibalulekile ekwenzeni i-cellulose isebenze kangcono ngesikhathi sokusabela kwe-etherification okulandelayo.

5. Ukusabela kwe-Etherification:

• I-cellulose esebenzayo idlula ku-etherification, lapho amaqembu e-ether efakwa khona kumaqembu e-hydroxyl ku-cellulose polymer chain. Ama-ejenti avamile okushisa afaka i-ethylene oxide, i-propylene oxide, i-sodium chloroacetate, i-methyl chloride, nezinye.
• Ukusabela kuvame ukwenziwa ngaphansi kwezimo ezilawulwayo zokushisa, ingcindezi, kanye ne-pH ukuze kufezwe izinga elifunekayo lokushintshana (DS) nokugwema ukusabela okungekuhle.

6. Ukungathathi hlangothi kanye nokuwasha:

• Ngemva kokusabela kwe-etherification, umkhiqizo uvame ukuncishiswa ukuze kususwe ama-reagents amaningi noma imikhiqizo engaphansi kwawo. Izinyathelo zokugeza ezilandelayo zenziwa ukuze kususwe amakhemikhali asele kanye nokungcola.

7. Ukomisa:

• I-cellulose ehlanziwe futhi efakwe i-ether iyomiswa ukuze kutholakale umkhiqizo wokugcina we-cellulose ether ngesimo sempuphu noma se-granular.

8. Ukulawulwa Kwekhwalithi:

• Kusetshenziswa amasu ahlukahlukene okuhlaziya, okuhlanganisa i-nuclear magnetic resonance (NMR) spectroscopy, i-Fourier-transform infrared (FTIR) spectroscopy, kanye ne-chromatography, ukulawula ikhwalithi. I-DS iqashwe ngokucophelela ukuqinisekisa ukuthi iyafana.

9. Ukwakhiwa kanye Nokusetshenziswa:

• I-cellulose ether ibe isihlelwa ngamamaki ahlukene ukuze ihlangabezane nezidingo ezithile zezicelo ezahlukahlukene. Ama-cellulose ether ahlukene afanelekela izimboni ezahlukene, njengokwakha, imithi, ukudla, izembozo, nokuningi.

Kubalulekile ukuqaphela ukuthi izindlela nezimo ezithile zingahluka ngokuya ngomkhiqizo we-cellulose ether owufunayo kanye nokusetshenziswa okuhlosiwe. Abakhiqizi bavame ukusebenzisa izinqubo zobunikazi ukukhiqiza ama-cellulose ether anezakhiwo ezithile ezenzelwe ukuhlangabezana nezidingo zezimboni ezahlukahlukene.