Uthini umahluko phakathi kwe-xanthan gum kunye ne-HEC?

I-Xanthan gum kunye ne-Hydroxyethyl cellulose (HEC) zombini zisetyenziswa ngokubanzi i-hydrocolloids kumashishini ahlukeneyo, kubandakanya ukutya, amayeza, izinto zokuthambisa, kunye neemveliso zokhathalelo lomntu. Ngaphandle kokwabelana ngezinto ezifanayo kwiipropathi zabo kunye nezicelo, kukho umahluko ocacileyo phakathi kwezi zimbini.

Ukubunjwa kunye noKwakha:

Xanthan Gum:
Xanthan gumyipolysaccharide ephuma ekubilisweni kweecarbohydrates yibhaktheriya iXanthomonas campestris. Iqukethe i-glucose, i-mannose, kunye neeyunithi ze-glucuronic acid, ezihlelwe kwisakhiwo esinamasebe amaninzi. I-backbone ye-xanthan gum iqulethe iiyunithi eziphindaphindiweyo ze-glucose kunye ne-mannose, kunye neentambo zecala le-glucuronic acid kunye namaqela e-acetyl.

I-HEC (i-Hydroxyethyl Cellulose):
I-HECiphuma kwi cellulose, eyipolima eyenzeka ngokwemvelo efumaneka kwiindonga zeeseli zezityalo. Kwimveliso ye-HEC, i-ethylene oxide iphendulwa kunye ne-cellulose ukwazisa amaqela e-hydroxyethyl kwi-cellulose backbone. Olu hlengahlengiso luphucula ukunyibilika kwamanzi kunye neempawu ze-rheological zeselulosi.

Iinkcazelo ngeempawu:

Xanthan Gum:
I-Viscosity: I-Xanthan gum inika i-viscosity ephezulu kwizisombululo ezinamanzi nakwindawo ezisezantsi, iyenza ibe yinto esebenzayo yokuqina.
Ukuziphatha kwe-Shear-thinning: Izisombululo eziqulethe i-xanthan gum zibonisa i-shear-thinning behaviour, okuthetha ukuba baye bangabi ne-viscous ngaphantsi koxinzelelo lwe-chear kwaye baphinde bafumane i-viscosity yabo xa uxinzelelo lususiwe.
Ukuzinza: I-Xanthan gum inikeza ukuzinza kwi-emulsions kunye nokumiswa, ukuthintela ukuhlukana kwesigaba.
Ukuhambelana: Iyahambelana noluhlu olubanzi lwamanqanaba e-pH kwaye inokumelana nokushisa okuphezulu ngaphandle kokulahlekelwa iimpawu zayo zokujiya.

HEC:
I-Viscosity: I-HEC ikwasebenza njenge-thickener kwaye ibonisa i-viscosity ephezulu kwizisombululo ezinamanzi.
I-non-ionic: Ngokungafani ne-xanthan gum, i-HEC ayinayo i-ionic, eyenza ukuba ingabi nantlupheko kwiinguqu kwi-pH kunye namandla e-ionic.
Ukwenza ifilimu: I-HEC yenza iifilimu ezicacileyo xa zomisiwe, ziyenza ibe luncedo kwizicelo ezifana neengubo kunye nokunamathiswa.
Ukunyamezela ityuwa: I-HEC igcina i-viscosity yayo phambi kweetyuwa, ezinokuthi zibe luncedo ekuqulunqweni okuthile.

Usebenzisa:

Xanthan Gum:
Ishishini lokutya: I-Xanthan gum isetyenziswa ngokuqhelekileyo njenge-stabilizer, i-thickener, kunye ne-gelling agent kwiimveliso zokutya ezahlukeneyo, kubandakanywa iisosi, izinxibo, izinto zokubhaka, kunye neemveliso zobisi.
Izithambiso: Isetyenziselwa ukwenza izinto zokuthambisa ezifana neekhrimu, izinto zokuthambisa, kunye nentlama yamazinyo ukunika i-viscosity kunye nokuzinza.
I-oyile kunye neGesi: I-Xanthan gum isetyenziselwa ukugrumba ulwelo kwishishini leoli kunye negesi ukulawula i-viscosity kunye nokumisa izinto eziqinileyo.

HEC:
Iipayinti kunye neengubo: I-HEC isetyenziswe kakhulu kwiipeyinti ezisekelwe emanzini, iingubo, kunye ne-adhesives ukulawula i-viscosity, ukuphucula iimpawu zokuhamba, kunye nokuphucula ukubunjwa kwefilimu.
Iimveliso zokhathalelo lobuqu: Sisithako esiqhelekileyo kwiimveliso zokhathalelo lomntu ezifana neshampu, iiconditioners, kunye neekhrimu ngenxa yokujiya kunye nokuzinzisa iipropathi.
I-Pharmaceuticals: I-HEC isetyenziswa njenge-binder kwi-tablet formulations kunye ne-thickener kumayeza angamanzi.

Umahluko:
Umthombo: I-Xanthan gum iveliswa yi-bacterial fermentation, kanti i-HEC ivela kwi-cellulose ngokuguqulwa kweekhemikhali.
I-Ionic Character: Xanthan gum i-anionic, ngelixa i-HEC i-non-ionic.
Ukuzwela kweTyuwa: I-Xanthan gum inovelwano kugxininiso lwetyuwa ephezulu, ngelixa i-HEC igcina i-viscosity yayo phambi kweetyuwa.
Ukuqulunqwa kwefilimu: I-HEC yenza iifilimu ezicacileyo xa zomisiwe, ezinokuthi zibe luncedo kwiingubo, ngelixa i-xanthan gum ayibonisi le propati.

Ukuziphatha kwe-Viscosity: Nangona zombini i-xanthan gum kunye ne-HEC zibonelela nge-viscosity ephezulu, zibonisa ukuziphatha okungafaniyo kwe-rheological. Izisombululo ze-Xanthan gum zibonisa i-chear-thinning behaviour, kanti izisombululo ze-HEC ngokubanzi zibonisa ukuziphatha kweNewtonian okanye ukucheba kancinci.
Izicelo: Nangona kukho ukugqithelana kwizicelo zabo, i-xanthan gum isetyenziswa ngokuqhelekileyo kwishishini lokutya kunye ne-drilling fluid additive, kanti i-HEC ifumana ukusetyenziswa okubanzi kwiipeyinti, iingubo, kunye neemveliso zokunyamekela.

ngelixa i-xanthan gum kunye ne-HEC babelana ngokufana okufanayo njenge-hydrocolloids esetyenziselwa ukuqina kunye nokuzinzisa iinkqubo zamanzi, ziyahluka kwimvelaphi yazo, i-ionic character, i-salt sensitivity, i-film-forming properties, kunye nokusetyenziswa. Ukuqonda lo mahluko kubalulekile ekukhetheni i-hydrocolloid efanelekileyo kwiindlela ezithile kunye neempawu ezifunwayo.