I-HydroxyYethylcellulose (HEC) iyinhlangano eguquguqukayo futhi esebenza ngempumelelo esetshenziswa kabanzi kwizimboni ezahlukahlukene. Le mpikiswano isuselwa ku-cellulose, i-polymer yemvelo etholakala ngamanani amakhulu ezindongeni zeseli zezitshalo. Izakhiwo eziyingqayizivele ze-HEC zenza ilungele ukuqina imikhiqizo ehlukahlukene, kusuka emikhiqizweni yokunakekelwa komuntu siqu ekwakhiweni kwezimboni.
Ukubuka konke kwe-cellulose
I-Cellulose iyi-carbohydrate eyinkimbinkimbi eyakhiwe ngamaketanga aqondile e-glucose molecule exhunywe ngama-β-1,4-glycosidic bond. Yingxenye enkulu yesakhiwo sezindonga zeseli zezitshalo, ukuhlinzeka ngokuqina namandla okutshala amaseli. Kodwa-ke, ifomu layo lendabuko alisebenzi futhi linokusebenza okulinganiselwe kwezicelo ezithile.
I-Cellulose Derivatives
Ukuze uthuthukise ukusebenza kwe-cellulose, okutholwa okuhlukahlukene kuguqulwe ngokuguqula ukwakheka kwayo. Okunye okususiwe yi-hydroxyethyl cellulose (HEC), lapho amaqembu e-hydroxyethyl angeniswa khona emhlane we-cellulose. Lokhu kuguqulwa kunikeza ama-hec ahlukile, okwenza kuncibilike emanzini futhi kusebenze kakhulu njengomuntu omkhulu.
Izici ze-HEC
Ubuhlakaniselo
Enye yezimpawu eziphambili ze-HEC yi-solubility yayo yamanzi. Ngokungafani ne-cellulose yemvelo, i-hec inciphisa kalula emanzini, yakha isixazululo esicacile. Le solibity yenza kube lula ukufaka ezingubeni ezahlukahlukene.
Izakhiwo ze-Rheological
I-HEC ikhombisa indlela yokuziphatha eshibilika noma ukuncipha okunciphisayo, okusho ukuthi ukubonakala kwayo kwehla ngaphansi kwengcindezi ye-shear futhi kwandiswe futhi ngemuva kokuthi izingcindezi zikhululiwe. Le Rheology ibalulekile ukuthi izinhlelo zokusebenza ezidinga ukusakazeka noma ukuthulula, njengokuqanjwa kwamapende, anamathela kanye nemikhiqizo yokunakekelwa komuntu siqu.
Ukuqina kwe-PH
I-HEC iqinile ngaphezu kwebanga le-PH, okwenza lilungele ukusetshenziswa ku-acidic, athathi hlangothi nokwakheka. Lokhu kuguqulwa kufake isandla ekwandisweni kwayo okuphelele emikhakheni ehlukahlukene kubahlinzeki abahlukahlukene kufaka phakathi izimonyo, amakhamishini nokudla.
Izicelo heC
Imikhiqizo Yokunakekelwa Kwakho
Ama-Shampoos kanye nezimo: I-HEC ivame ukusetshenziselwa ukuqina imikhiqizo yokunakekelwa kwezinwele, ukuhlinzeka ngokubona okuhle nokwenza ngcono ukuthungwa okuphelele.
Okhilimu kanye no-lotion: Kumakhi wokunakekelwa kwesikhumba, i-HEC isiza ukufeza ukuvumelana okudingayo futhi ithuthukise ukusakazeka kokhilimu ne-lotions.
Ukuhlanza izinyo: Ukuziphatha kwalo kwe-pseudoplastic kusiza ukwakhiwa kwamazinyo okuvumela ukusatshalaliswa okulula nokusakazeka ngesikhathi sokuxubha.
Upende nezimbobo
I-Latex Paint: I-HEC isiza ukwandisa i-viscosity nokuqina kopende we-latex, ukuqinisekisa nokufaka isicelo ebusweni.
Adhesives: Emakhishini anamathela, i-HEC isiza ukulawula ukubonwa futhi ngcono izakhiwo zokubopha.
isidaka mizwa
Ukumiswa komlomo: I-HEC isetshenziselwa ukukhulisa ukumiswa komlomo ukuze kunikeze ifomu elizinzile nelinenkani yekhompiyutha yezemithi.
Ama-topical gels: I-solubility ye-HEC emanzini yenza kube lula ukwenza ama-topical gels, ukuqiniseka kalula kwesicelo nokumunca.
imboni yokudla
Amasoso kanye nokugqoka: I-HEC isetshenziselwa ukuqina kososo kanye nokugqoka, ithuthukisa ukuthungwa kwabo kanye nomlomo.
Imikhiqizo ebhakiwe: Ezintweni ezithile zokubhaka, i-HEC isiza izinhlansi ezikhuphukile kanye nezinhlamba.
Ukukhiqizwa nokulawulwa kwekhwalithi
umuntu wenkuqunu
I-HEC ikhiqizwa ngokujwayelekile ngokuthezeka kwe-cellulose nge-ethylene oxide ngaphansi kwezimo ezilawulwayo. Izinga lokufakwa esikhundleni (DS) leqembu le-hydroxyethyl lingashintshwa ngesikhathi senqubo yokwenza, ngaleyo ndlela lithinta ukusebenza kokugcina kwe-HEC.
QC
Izindlela zokulawula ezisezingeni eliphakeme zibalulekile ukuqinisekisa ukusebenza okungaguquki kwe-HEC ezinhlobonhlobo zezicelo. Amapharamitha anjengesisindo se-molecular, izinga lokufakwa esikhundleni kanye nobumsulwa bubhekwa ngokucophelela ngesikhathi senqubo yokukhiqiza.
Ukucatshangelwa Kwezemvelo
Njenganoma iyiphi i-compact compact, izici zezemvelo zibalulekile. I-HEC isuselwa ku-cellulose futhi ingabe i-bioderlines ngokwemvelo kunabanye abakhuthele. Kodwa-ke, kubalulekile ukubheka umthelela wezemvelo ophelele wokukhiqizwa kwawo futhi usetshenziswe kuzinhlelo zokusebenza ezihlukile.
Ekuphetheni
Ngamafuphi, i-hydroxyyethylcellulose (HEC) ivelele njengengxenye ephumelelayo futhi eguquguqukayo enezicelo ezikhona kuzo zonke izimboni eziningi. Izakhiwo zayo ezihlukile, kufaka phakathi i-solubility yamanzi, ukuziphatha okunothando nokuqina kwe-PH, kwenze isithako esibalulekile ekuhlumeni okuhlukahlukene komkhiqizo. Njengoba izimboni ziyaqhubeka nokufuna ezinye izindlela ezinobungane bemvelo, izakhiwo ze-biodegreatable ze-HEC ezisuselwa ku-Plant Cellulose zikwenza kube ukukhetha okuqhubekayo kwezinhlelo ezahlukahlukene. Ukucwaninga okuqhubekayo nokusungulwa kwezinto ezintsha eCellulose Derivatives enjenge-HEC kungaholela ekutheni ithuthukiswe okwengeziwe, ukuhlinzeka ukusebenza okuphezulu nokuncishiswa kwezemvelo.
Isikhathi Sokuthumela: Dec-02-2023