I-Thickener hec hydroxyethyl cellulose

IHydroxyethyl cellulose (HEC) iwumphumela we-nonionic cellulose osetshenziswa kakhulu ezimbonini ezahlukahlukene ngenxa yokujiya kwayo okuhle kakhulu, ukumisa okwesikhashana, kanye nezakhiwo zayo zokuhlanganisa. I-HEC iyi-polymer encibilika emanzini engancibilika kalula emanzini abandayo ukuze yakhe izixazululo ezicacile nezingenambala. I-HEC ivame ukusetshenziswa njenge-thickener ezinhlobonhlobo zezicelo, okuhlanganisa ukumboza, ukunamathela, imikhiqizo yokunakekelwa komuntu siqu, kanye nemithi.

I-HEC ikhiqizwa ngokushintsha i-cellulose yemvelo, i-polymer ehlanganisa amayunithi e-glucose axhunywe ndawonye ngamabhondi e-β(1→4) e-glycosidic. Ukuguqulwa kwe-cellulose kuhilela ukwethulwa kwamaqembu e-hydroxyethyl (-CH2CH2OH) kumayunithi we-anhydroglucose womgogodla we-cellulose. Lokhu kuguqulwa kubangela i-polymer encibilikayo emanzini engakha izibopho ze-hydrogen nama-molecule amanzi, okuholela ekwakhekeni kwesisombululo se-viscous.

I-HEC iyi-thickener ephumelelayo ngenxa yekhono layo lokwakha isakhiwo esifana nejeli lapho yengezwe kwisisombululo. Amaqembu e-hydroxyethyl ku-molecule ye-HEC angasebenzisana nama-molecule amanzi, okuholela ekwakhekeni kwamabhondi e-hydrogen. Amabhondi e-hydrogen phakathi kwe-molecule ye-HEC nama-molecule amanzi abangela ukuthi i-molecule ye-HEC ibe yi-hydrated futhi ikhule ngosayizi. Njengoba i-molecule ye-HEC ikhula, yenza isakhiwo senethiwekhi esinezinhlangothi ezintathu esibamba amanzi nezinye izingxenye ezincibilikile, okuholela ekwandeni kwe-viscosity yesisombululo.

Amandla okuqina we-HEC athintwa izici ezihlukahlukene, okuhlanganisa ukugxila kwe-HEC esixazululweni, izinga lokushisa, kanye ne-pH. Ukugxila okuphezulu kwe-HEC kusixazululo kuholela ekwandeni okubaluleke kakhulu kwe-viscosity. Kodwa-ke, ukwandisa ukugxila kwe-HEC ngaphezu kwephuzu elithile kungaholela ekwehleni kwe-viscosity ngenxa yokwakhiwa kwama-aggregates. Izinga lokushisa liphinde lithinte ikhono lokuqina le-HEC, namazinga okushisa aphezulu aholela ekunciphiseni kwe-viscosity. I-pH yesisombululo ingase futhi ithinte ikhono lokujiya le-HEC, ngamavelu e-pH aphezulu aholela ekwehleni kwe-viscosity.

I-HEC ivame ukusetshenziswa njenge-thickener ezinhlelweni ezahlukahlukene, kufaka phakathi ama-coatings namapende. Ezingubo zokugqoka, i-HEC yengezwe ekwakhiweni ukuze kuthuthukiswe izakhiwo ze-rheological zokugqoka. Izici ze-rheological ze-coating zibhekisela ekhonweni layo lokugeleza kanye nezinga endaweni. I-HEC ingathuthukisa ukugeleza nokulinganisa izakhiwo ze-coating ngokwandisa i-viscosity yayo futhi inciphise ukuthambekela kwayo kokuwohloka. I-HEC ingaphinde ithuthukise ukuzinza kwe-coating ngokuvimbela ukuhlaliswa kwezingulube nezinye izinto eziqinile.

Kuma-adhesives, i-HEC isetshenziswa njenge-thickener ukuze kuthuthukiswe i-viscosity kanye nokuqiniswa kwe-adhesive. I-viscosity ye-adhesive ibalulekile ukuze ikwazi ukunamathela endaweni nokuhlala endaweni. I-HEC ingathuthukisa i-viscosity ye-adhesive futhi ivimbele ukuthi ingaconsi noma isebenze. I-HEC ingabuye ithuthukise ukubambelela kokunamathelayo, ukuyivumela ukuthi inamathele kangcono endaweni.

Emikhiqizweni yokunakekelwa komuntu siqu, i-HEC isetshenziswa njenge-thickener ne-stabilizer. I-HEC ivame ukusetshenziswa kuma-shampoos, ama-conditioner, nokugeza umzimba ukuze kuthuthukiswe i-viscosity yabo nokuthungwa. I-HEC ingaphinde ithuthukise ukuzinza kwale mikhiqizo ngokuvimbela ukuhlukaniswa kwesigaba kanye nokuhlaliswa kwezinto eziqinile.

Kwezemithi, i-HEC isetshenziswa njenge-thickener ne-ejenti yokumisa. I-HEC ivame ukusetshenziswa ekumisweni ngomlomo ukuze kumiswe izidakamizwa ezingancibiliki endaweni ewuketshezi. I-HEC ingasetshenziswa futhi njenge-thickener kumakhilimu we-topical nama-gel ukuthuthukisa i-viscosity yabo nokuthungwa.

Sengiphetha, i-HEC iyi-polymer encibilika emanzini esetshenziswa kabanzi njenge-thickener ezimbonini ezahlukahlukene ngenxa yokujiya kwayo okuhle kakhulu, ukumisa okwesikhashana, kanye nezakhiwo ze-emulsifying.