I-HEC cellulose sisityebi esisebenzayo.

IHydroxyethylcellulose (HEC) sisixhobo esityebisa ngeendlela ezininzi nesisebenzayo esisetyenziswa kakhulu kumashishini ahlukeneyo.Le khompawundi ivela kwi-cellulose, i-polymer yendalo efunyenwe kwixabiso elikhulu kwiindonga zeeseli zezityalo.Iimpawu ezikhethekileyo ze-HEC zenza ukuba zilungele ukutyebisa iintlobo ezahlukeneyo zeemveliso, ukusuka kwiimveliso zokhathalelo lomntu ukuya kwimiqulu yemizi-mveliso.

Cellulose Overview

I-Cellulose yi-carbohydrate eyinkimbinkimbi eyenziwe ngamatyathanga ahlukeneyo eemolekyuli ze-glucose ezidityaniswe ngamabhondi e-β-1,4-glycosidic.Yeyona nxalenye yolwakhiwo oluphambili lweendonga zeeseli zesityalo, ukubonelela ngokuqina kunye namandla kwiiseli zokutyala.Nangona kunjalo, uhlobo lwayo lwendalo alunyibiliki kwaye lunokusebenza okulinganiselweyo kwizicelo ezithile.

i-cellulose derivatives

Ukuze kuphuculwe ukusebenza kwe-cellulose, izinto ezahlukeneyo eziphuma kuzo ziye zadityaniswa ngokutshintsha ubume bayo.Enye into enjalo yi-hydroxyethyl cellulose (HEC), apho amaqela e-hydroxyethyl angeniswa kwi-cellulose backbone.Olu hlengahlengiso lunika iipropati ezikhethekileyo ze-HEC, ziyenza inyibilike emanzini kwaye isebenze kakhulu njenge-thickener.

Iimpawu zeHEC

Ukunyibilika

Enye yeempawu eziphambili ze-HEC kukunyibilika kwayo emanzini.Ngokungafani ne-cellulose yendalo, i-HEC ichithwa ngokulula emanzini, yenza isisombululo esicacileyo.Oku kunyibilika kwenza kube lula ukudibanisa kwiintlobo ezahlukeneyo zemixube.

Iimpawu zeRheological

I-HEC ibonisa ukuziphatha kwe-pseudoplastic okanye i-shear-thinning, oku kuthetha ukuba i-viscosity yayo iyancipha phantsi koxinzelelo lwe-shear kwaye yanda kwakhona emva kokuba uxinzelelo lukhululiwe.Le rheology ibaluleke kakhulu kwizicelo ezifuna ukukhululeka kokusabalalisa okanye ukuthulula, njengokuqulunqwa kwepeyinti, i-adhesives kunye nemveliso yokunyamekela komntu.

ukuzinza kwe-pH

I-HEC izinzile kuluhlu olubanzi lwe-pH, okwenza ukuba ilungele ukusetyenziswa kwi-acidic, i-neutral kunye ne-alkaline formulations.Oku kuguquguquka kube negalelo ekwamkelweni kwayo ngokubanzi kumashishini ahlukeneyo abandakanya izinto zokuthambisa, amayeza kunye nokutya.

Usetyenziso lwe-HEC

iimveliso zokhathalelo lomntu

I-Shampoos kunye ne-Conditioners: I-HEC isoloko isetyenziselwa ukutyebisa iimveliso zokunakekelwa kweenwele, ukubonelela nge-viscosity efanelekileyo kunye nokuphucula ukuthungwa ngokubanzi.

I-Creams kunye ne-Lotions: Ekuqulunqweni kokunakekelwa kwesikhumba, i-HEC inceda ukufezekisa ukuhambelana okufunwayo kwaye ikhulise ukusasazeka kwe-creams kunye ne-lotions.

I-toothpaste: Ukuziphatha kwayo kwe-pseudoplastic kuququzelela ukuqulunqwa kwe-toothpaste evumela ukuba kube lula ukusabalalisa kunye nokusabalalisa ngexesha lokuxubha.

Iipeyinti kunye neeNgqungquthela

Ipeyinti yeLatex: I-HEC inceda ukunyusa i-viscosity kunye nokuzinza kwepeyinti ye-latex, iqinisekisa nokuba ukusetyenziswa kuyo yonke indawo.

I-Adhesives: Ekuqulunqweni kwe-adhesive, i-HEC inceda ukulawula i-viscosity kunye nokuphucula iimpawu zokubambisana.

iyeza

Ukumiswa komlomo: I-HEC isetyenziselwa ukutyebisa ukumiswa komlomo ukubonelela ngefom ezinzileyo kunye nencasa kwikhompawundi yamachiza.

Iigels zezihloko: I-solubility ye-HEC emanzini yenza ukuba ilungele ukuqulunqa ii-gels ze-topical, ukuqinisekisa ukukhululeka kwesicelo kunye nokufunxa.

ishishini lokutya

I-Sauces kunye nokunxiba: I-HEC isetyenziselwa ukutyebisa iisosi kunye neengubo, ukuphucula ukuthungwa kunye nomlomo.

Iimveliso ezibhakiweyo: Kwiindlela zokupheka ezithile zokubhaka, i-HEC inceda ukujiya iintlama kunye neentlama.

Imveliso kunye nolawulo lomgangatho

udibaniso

I-HEC iveliswa ngokuqhelekileyo nge-etherification ye-cellulose kunye ne-ethylene oxide phantsi kweemeko ezilawulwayo.I-degree of substitution (DS) yeqela le-hydroxyethyl inokulungiswa ngexesha lenkqubo yokudibanisa, ngaloo ndlela ichaphazela ukusebenza kokugqibela kwe-HEC.

QC

Amanyathelo okulawula umgangatho abaluleke kakhulu ukuqinisekisa ukusebenza okufanayo kwe-HEC kwiintlobo ezahlukeneyo zezicelo.Iiparamitha ezifana nobunzima bemolekyuli, iqondo lokutshintshwa kunye nokucoceka zibekwe esweni ngononophelo ngexesha lenkqubo yokuvelisa.

ingqwalasela yokusingqongileyo

Njengayo nayiphi na imichiza, imiba yokusingqongileyo ibalulekile.I-HEC ithathwe kwi-cellulose kwaye ngokwemvelo iyabolisa ngakumbi kunezinye ii-synthetic thickeners.Nangona kunjalo, kubalulekile ukuqwalasela impembelelo yokusingqongileyo jikelele yokuveliswa kwayo kunye nokusetyenziswa kwizicelo ezahlukeneyo.

ukuququmbela

Ngamafutshane, i-hydroxyethylcellulose (HEC) igqame njengesixhobo esisebenzayo nesiguquguqukayo esityebisa ngokusetyenziswa kumashishini amaninzi.Iimpawu zayo ezikhethekileyo, kubandakanywa ukunyibilika kwamanzi, ukuziphatha kwe-rheological kunye nokuzinza kwe-pH, yenza ukuba ibe yinto exabisekileyo kwiintlobo ezahlukeneyo zemveliso.Njengoko imizi-mveliso iqhubeka nokufuna ezinye iindlela ezilungele ukusingqongileyo, iipropathi ze-HEC ezinokubola ezisuka kwi-plant cellulose zenza ukuba ibe lukhetho oluzinzileyo kwiintlobo ezahlukeneyo zezicelo.Uphando oluqhubekayo kunye nokuveliswa kwezinto ezintsha kwi-cellulose ezifana ne-HEC kunokukhokelela kwinkqubela phambili, ukubonelela ngokusebenza okuphezulu kunye nokunciphisa impembelelo yokusingqongileyo.