IHydroxYethyl Cellulose (HEC) yi-nonic, i-polymer esolulekayo enamanzi etholakala ku-cellulose, i-polymer eyenzeka ngokwemvelo etholakala ezindongeni zeseli zezitshalo. Isetshenziswa kabanzi kwizimboni ezahlukahlukene ezinjengemithi, izimonyo, upende, ukunamathela, kanye nemikhiqizo yokudla ngenxa yamakhono ayo ahlukile njengokuqina, ukuqina nokugcinwa kwamanzi. Kodwa-ke, ukuxoxa ngenani le-PH ye-HEC kudinga ukuqonda okubanzi kwezakhiwo zayo, isakhiwo, kanye nezicelo.
Ukuqonda i-Hydroxyethyl cellulose (HEC):
1. Isakhiwo samakhemikhali:
I-HEC ihlelwe ngokusabela kwe-cellulose nge-ethylene oxide, okuholela ekwethulweni kwamaqembu we-hydroxyethyl (-ch2ch2oh) kwi-cellulose backbone.
Izinga lokufaka esikhundleni (DS) lisho inani eliphakathi lamaqembu we-hydroxyethyl ngamunye uphiko lwe-glucose ku-cellulose chain futhi inquma izakhiwo ze-HEC. Amanani aphezulu we-DS aholele ekunyuseni insongility yamanzi nokubonakala okuphansi.
2. Izakhiwo:
I-HEC incane emanzini kanye nezinhlobo izixazululo ezicacile, ezenza zilungele izinhlelo zokusebenza ezahlukahlukene ezidinga ukwakhiwa okusobala.
Ibonisa isimilo se-Pseudoplastic, okusho ukuthi i-visa yayo inciphisa ngaphansi kwengcindezi ye-shear, ivumela uhlelo lokusebenza olulula nokuphatha.
I-viscosity ye-HEC Solutions ithonywa yizinto ezifana nokuhlushwa, izinga lokushisa, ph, kanye nokuba khona kosawoti noma ezinye izengezo.
3. Izicelo:
IMITHETHO: I-HEC isetshenziswa njengesikhudlwana kanye ne-stabilizer ekwakhekeni kwemithi ngomlomo kanye namafutha, okhilimu kanye nokumiswa.
Izimonyo: Kuyisithako esivamile emikhiqizweni yokunakekelwa komuntu siqu kufaka ama-shampoos, ama-lotion, kanye nokhilimu ngenxa yezakhiwo zayo zokuqina kanye nokuqinisa.
Amapende nezimbobo: I-HEC ingezwa kumapende, ukumboza, kanye nokunamathela ukulawula i-viscosity, ngcono ukugeleza kwezakhiwo, futhi kuthuthukise ukwakheka kwamafilimu.
Imboni yokudla: Emikhiqizweni yokudla, i-HEC isebenza njengesikhulu, i-Stabilizer, kanye ne-emulsifier ezintweni ezinjengesosos, ukugqoka, kanye nemikhiqizo yobisi.
Ivelu ye-PH ye-Hydroxyethyl celtulose (HEC):
1. Ukuncika kwe-PH:
I-PH yesisombululo esiqukethe i-HEC ingathonya ukusebenza kwayo kanye nokusebenza kwayo ezinhlelweni ezahlukahlukene.
Ngokuvamile, i-HEC iqinile ngaphezu kobubanzi be-PH, ngokuvamile phakathi kwe-PH 2 ne-PH 12. Kodwa-ke, izimo ze-PH ezedlulele zingathinta izakhiwo zayo nokuqina.
2. Imiphumela ye-PH ekuboniseni:
I-viscosity ye-HEC Solutions ingaba nokuncika kwe-PH, ikakhulukazi kumanani aphezulu noma aphansi we-PH.
Eduze nobubanzi be-neutral Ph (i-PH 5-8), izixazululo ze-HEC zivame ukukhombisa ukubonakala kwazo okuphezulu.
Amanani aphansi kakhulu we-PH noma aphezulu we-PH, i-cellulose backbone ingahle i-hydrolysis, okuholele ekunciphiseni ekuboneni nasekuzinzeni.
3. Ukulungiswa kwe-PH:
Ekwakhekeni lapho ukulungiswa kwe-PH kuyadingeka, ama-buffers ajwayele ukusetshenziselwa ukugcina uhla olufunayo lwe-PH.
Ama-buffers ajwayelekile anjenge-citrate noma ama-phosphate buffers ahambisana ne-HEC futhi asize qinisa izakhiwo zayo ngaphakathi kwebanga elithile le-PH.
4. Ukucatshangelwa kohlelo lokusebenza:
Amakhemikhali kumele abheke ukuhambisana kwe-PH ukuhambisana kwe-HEC nezinye izithako ekwakhekeni.
Kwezinye izimo, ukulungiswa kwe-PH yokwakheka kungadingeka ukuze kwenziwe kahle ukusebenza kwe-HEC.
IHydroxYethyl Cellulose (I-HEC) iyinhlangano eguquguqukayo enezicelo ezisakazekile kuyo yonke imboni ehlukahlukene. Ngenkathi ukuzinza kwayo kwe-PH kuvame ukuba buqili ngaphezulu kohlu olubanzi, ukweqisa kwe-ph kungathinta ukusebenza kwayo nokuqina kwalo. Ukuqonda ukuncika kwe-PH ye-HEC kubalulekile ekwakheni imikhiqizo ephumelelayo nezinzile kwimithi, izimonyo, upende, ukunamathela, nemikhiqizo yokudla. Ngokubheka ukuhambisana kwe-PH kanye nokusebenzisa amasu afanelekile akwakheka, i-HEC ingaqhubeka nokusebenza njengesithako esibalulekile ezinhlotsheni ezahlukahlukene zezicelo.
Isikhathi sePosi: APR-15-2024