Kunonosora Hydroxyethyl selulose

Hydroxyethyl selile(HEC) ni polymer ibora amazi ikoreshwa cyane mu nganda zitandukanye nka farumasi, amavuta yo kwisiga, n'ibiribwa. HEC ikomoka kuri selile, polymer karemano iboneka mu bimera, kandi ihindurwa nitsinda rya hydroxyethyl kugirango irusheho gukomera kwamazi nibindi bintu.

Kunonosora HEC bikubiyemo intambwe nyinshi zo kweza no guhindura polymer kugirango zuzuze ibisabwa byihariye kugirango bikoreshwe. Ibikurikira nimwe muntambwe zisanzwe zigira uruhare mugutunganya HEC:

1. Kwezwa: Intambwe yambere mugutunganya HEC ni ugusukura ibikoresho bya selile. Ibi bikubiyemo gukuraho umwanda nka lignin, hemicellulose, nibindi byanduza bishobora kugira ingaruka kumiterere nimiterere yibicuruzwa byanyuma. Isuku irashobora kugerwaho hakoreshejwe uburyo butandukanye nko gukaraba, guhumanya, no kuvura imisemburo.

2. Alkalisation: Nyuma yo kwezwa, selile ikoreshwa hamwe nigisubizo cya alkaline kugirango yongere imbaraga zayo kandi yorohereze kwinjiza hydroxyethyl. Ubusanzwe alkalisation ikorwa na hydroxide ya sodium cyangwa potasiyumu hydroxide ku bushyuhe bwinshi hamwe n’umuvuduko.

3. Etherification: Intambwe ikurikira ni ukumenyekanisha amatsinda ya hydroxyethyl kumugongo wa selile. Ibi bikorwa binyuze muri etherification, ikubiyemo reaction ya selile hamwe na okiside ya Ethylene imbere ya catalizike ya alkaline. Urwego rwa etherification rushobora kugenzurwa kugirango ugere kubintu byifuzwa nka viscosity, solubility, hamwe nubushyuhe bwumuriro.

4. Kutabogama: Nyuma ya etherification, ibicuruzwa bitagira aho bibogamiye kugirango bikureho alkali isigaye kandi ihindure pH kurwego rukwiye kugirango ikoreshwe. Kutabogama birashobora gukorwa na aside nka acide acike cyangwa aside citric.

5. Kuzunguruka no gukama: Intambwe yanyuma ni kuyungurura no gukama ibicuruzwa bya HEC binonosoye. Ibicuruzwa mubisanzwe byungururwa kugirango bikureho umwanda wose usigaye hanyuma byumirwe muburyo bukwiye bwo kubika no gutwara.

Muri rusange, gutunganya HEC bikubiyemo urukurikirane rw'intambwe zo kweza no guhindura ibikoresho fatizo bya selile kugirango bibyare umusaruro mwiza wo mu rwego rwo hejuru, ushonga amazi ya polymer hamwe nibintu byihariye bigenewe gukoreshwa.