Ingabe i-hydroxyethylcellulose iyinto yemvelo noma yokwenziwa?

Isingeniso se-Hydroxyethylcellulose (HEC):

IHydroxyethylcellulose iphuma ku-cellulose, i-polysaccharide eyenzeka ngokwemvelo etholakala ezindongeni zamaseli ezitshalo. I-Cellulose yakhiwe amayunithi eglucose aphindaphindayo axhunywe ndawonye ngamabhondi e-β-1,4 glycosidic. I-Hydroxyethylcellulose itholakala ngokushintsha i-cellulose ngokufakwa kwamaqembu e-hydroxyethyl (-CH2CH2OH) emhlane wayo.

Inqubo Yokukhiqiza:

I-Etherification yeCellulose: Ukukhiqizwa kwe-HEC kuhilela ukufakwa kwe-cellulose etherification. Le nqubo ngokuvamile iqala nge-cellulose etholakala ku-pulp yezinkuni noma ama-linters kakotini.

Ukusabela nge-Ethylene Oxide: I-Cellulose ibe isabela nge-ethylene oxide ngaphansi kwezimo ze-alkaline. Lokhu kusabela kuholela ekufakweni kwamaqembu e-hydroxyl kumgogodla we-cellulose namaqembu e-hydroxyethyl, okuholela ku-hydroxyethylcellulose.

Ukuhlanzwa: Umkhiqizo ube usuhlanzwa ukuze kukhishwe noma yiziphi izixube ezingaphenduliwe kanye nemikhiqizo eseceleni.

Izici ze-Hydroxyethylcellulose:

Ukunyibilika: I-HEC iyancibilika kuwo womabili amanzi abandayo nashisayo, okwenza kucace ezixazululweni ezimathuthuva kancane kuye ngokugxila.

I-Viscosity: Ibonisa ukuziphatha kwe-pseudoplastic, okusho ukuthi i-viscosity yayo iyancipha ngokukhuphuka kwezinga lokugunda. I-viscosity yezixazululo ze-HEC ingalungiswa ngezinto ezihlukahlukene ezifana nokugxila kanye nezinga lokushintshwa.

Izakhiwo Zokwenza Ifilimu: I-HEC ingakha amafilimu aguquguqukayo futhi ahlangene, okwenza abe usizo ezinhlelweni ezihlukahlukene lapho ukwakhiwa kwefilimu kuyadingeka.

I-Ejenti Yokuqina: Enye yezinto eziyinhloko ezisetshenziswa i-HEC njenge-ejenti yokuqina ekwenziweni okuhlukahlukene, njengezimonyo, imithi, nemikhiqizo yokunakekelwa komuntu siqu.

Ukusetshenziswa kwe-Hydroxyethylcellulose:

Izimonyo Nemikhiqizo Yokunakekela Umuntu: I-HEC isetshenziswa kakhulu kuzimonyo nemikhiqizo yokunakekelwa komuntu siqu njenge-thickener, stabilizer, kanye ne-ejenti yokwakha ifilimu emikhiqizweni efana nezigcobo, okhilimu, ama-shampoos, kanye nomuthi wokuxubha.

Ezemithi: Ekwenziweni kwemithi, i-HEC isebenza njenge-ejenti elengayo, i-binder, kanye ne-matrix ekhishwa okulawulwayo embotsheni yethebhulethi nasekubunjweni komlomo.

Amapende nama-Coatings: I-HEC isetshenziswa kumapende asekelwe emanzini nasezimbotsheni njenge-thickener ne-rheology modifier ukuze kulawulwe i-viscosity futhi kuthuthukiswe izakhiwo zohlelo.

Imboni Yokudla: Embonini yokudla, i-HEC isetshenziswa njenge-ejenti ejiya futhi eqinisayo emikhiqizweni efana namasoso, okokugqoka, nemikhiqizo yobisi.

Impikiswano Yokuhlukaniswa Kwemvelo noma Yokwenziwa:

Ukuhlukaniswa kwe-hydroxyethylcellulose njengemvelo noma okokwenziwa kungaphansi kwenkulumo-mpikiswano. Nazi izimpikiswano ezivela kuyo yomibili le mibono:

Izimpikiswano Zokuhlukaniswa njenge-Synthetic:

Ukuguqulwa Kwamakhemikhali: I-HEC itholakala ku-cellulose ngenqubo yokuguqulwa kwamakhemikhali ehlanganisa ukusabela kwe-cellulose nge-ethylene oxide. Lokhu kuguqulwa kwamakhemikhali kubhekwa njengokwenziwa ngokwemvelo.

Ukukhiqizwa Kwezimboni: I-HEC ikhiqizwa ngokuyinhloko ngezinqubo zezimboni ezibandakanya ukusabela okulawulwayo kanye nezinyathelo zokuhlanza, okuyizinto ezijwayelekile zokwenziwa kwenhlanganisela yokwenziwa.

Idigri Yokushintsha: Izinga lokushintsha ku-HEC lingalawulwa ngokunembile ngesikhathi sokuhlanganiswa, okubonisa imvelaphi yokwenziwa.

Izimpikiswano Zokuhlukaniswa Njengezemvelo:

Isuselwa kuCellulose: I-HEC ekugcineni itholakala ku-cellulose, i-polymer yemvelo etholakala kakhulu ezitshalweni.

Umthombo Ovuselelekayo: I-Cellulose, into yokuqala yokukhiqiza i-HEC, itholakala ezinsizeni ezivuselelekayo ezifana ne-wood pulp nokotini.

I-Biodegradability: Njenge-cellulose, i-HEC iyakwazi ukubola, ihlehle ibe yimikhiqizo engenangozi endaweni ezungezile ngokuhamba kwesikhathi.

Ukufana Okusebenzayo Neselulosi: Naphezu kokuguqulwa kwamakhemikhali, i-HEC igcina izakhiwo eziningi ze-cellulose, njengokuncibilika emanzini kanye nokuvumelana kwezinto eziphilayo.

I-hydroxyethylcellulose iyi-polymer eguquguqukayo etholakala ku-cellulose ngenqubo yokuguqulwa kwamakhemikhali. Nakuba ukukhiqizwa kwayo kuhilela ukusabela kokwenziwa kanye nezinqubo zezimboni, ekugcineni kutholakala emthonjeni wemvelo novuselelekayo. Inkulumo-mpikiswano mayelana nokuthi i-HEC kufanele ifakwe kusigaba njengezemvelo noma ezokwenziwa zibonisa ubunkimbinkimbi bokuchaza la magama kumongo wama-polymer emvelo alungisiwe. Noma kunjalo, ukubola kwayo kwemvelo, ukutholakala okuvuselelekayo, nokufana kokusebenza ku-cellulose kuphakamisa ukuthi inezici zazo zombili izinhlanganisela zemvelo nezokwenziwa, okufiphalisa imingcele phakathi kwezigaba ezimbili.