IHydroxyethylcellulose (HEC) yipolymer eqhelekileyo enyibilikayo emanzini esetyenziswa kakhulu kwizithambiso kunye neemveliso zokhathalelo lomntu. Ihlala isetyenziswa njenge-thickener, stabilizer kunye nefilimu yangaphambili kwiimveliso ezahlukeneyo zokhathalelo lwesikhumba, iishampu, iijeli zeshawa, iilotion, iigel kunye nezinye iimveliso. Ukhuseleko lwayo lufumene ingqwalasela ebanzi kwintsimi yezithambiso.
Iipropati zeMichiza kunye nendlela yokusebenza
I-Hydroxyethylcellulose yenziwa ngokunyanga i-cellulose kunye ne-sodium hydroxide kwaye iphendule nge-ethylene oxide. I-Cellulose i-polysaccharide ngokwemvelo efunyenwe kwizityalo, kwaye ngale nkqubo, ukunyibilika kwamanzi kwe-cellulose kuphuculwe, okwenza kube yinto efanelekileyo yokusetyenziswa kwimiqulu esekelwe emanzini. I-Hydroxyethylcellulose inesiphumo esihle sokuqina, esinokunyusa i-viscosity yemveliso, okwenza imveliso ibe lula kwaye kulula ukuyisebenzisa ngexesha lokusetyenziswa. Ukongeza, i-HEC iphinda ifake ifilimu kwaye inokwenza ifilimu ekhuselayo phezu kwesikhumba okanye iinwele ukukhusela ukukhuphuka kwamanzi kunye nokudlala indima yokuthambisa.
Ukhuseleko lwe-Hydroxyethyl Cellulose
Ukhuseleko lwe-hydroxyethyl cellulose luye lwavavanywa yimibutho emininzi enegunya. Ngokutsho kovavanyo lweKomiti yokuHlola i-Cosmetic Ingredient Review (CIR) e-United States kunye ne-European Cosmetic Regulation (EC No 1223/2009), i-Hydroxyethylcellulose ithathwa njengento ekhuselekileyo yezimonyo. Ngaphakathi koluhlu olumiselweyo lokugxininiswa kokusetyenziswa, i-HEC ayibangeli ingozi kwimpilo yabantu.
Uphononongo lwe-Toxicological: Izifundo ezininzi ze-toxicological zibonise ukuba i-Hydroxyethylcellulose ayibangeli ukucaphuka kwesikhumba okanye ukusabela komzimba. Akukho vavanyo lwetyhefu olubukhali okanye uvavanyo lwetyhefi lwexesha elide lufumene i-HEC ukuba yi-carcinogenic, i-mutagenic okanye ityhefu yokuzala. Ke ngoko, ithathwa ngokubanzi njengesithako esithambileyo nesingenabungozi kwesikhumba namehlo.
Ukufunxa ulusu: Ngenxa yobunzima bayo obukhulu bemolekyuli, iHydroxyethylcellulose ayinakudlula kwisithintelo solusu kwaye ingene kumjikelezo wenkqubo yomzimba. Enyanisweni, i-HEC yenza ifilimu ekhuselayo emva kokusetyenziswa, ehlala phezu kwesikhumba ngaphandle kokungena nzulu eluswini. Ngoko ke, ayibangeli iziphumo zenkqubo kumzimba womntu, ophucula ngakumbi ukhuseleko lwayo.
Ukhuseleko lokusingqongileyo: IHydroxyethylcellulose iyabola kwindalo esingqongileyo kwaye ayisayi kubangela ungcoliseko lwexesha elide kwi-ecosystem. Ukukhuseleka kwayo kokusingqongileyo kuye kwaqatshelwa yimibutho ekhusela indalo esingqongileyo.
Uvavanyo lwesicelo kunye nokhuseleko kwii-cosmetics
I-concentration ye-hydroxyethyl cellulose kwizinto zokuthambisa idla ngokuba phantsi, ngokubanzi phakathi kwe-0.1% kunye ne-2%. Ugxininiso olunjalo losetyenziso lungaphantsi kakhulu kumda wokhuseleko owaziwayo, ke ngoko kukhuseleke ngokupheleleyo ukusetyenziswa kwezi ngxiloniso. Ngenxa yokuzinza kunye nokuhambelana kakuhle, i-HEC isetyenziswa ngokubanzi kwiintlobo ezahlukeneyo zokuthambisa ukunyusa ukuthungwa kunye namava omsebenzisi wemveliso.
I-Hydroxyethyl cellulose sisixhobo esisetyenziswa kakhulu kwaye sikhuseleke kakhulu kwizinto zokuthambisa. Kungakhathaliseki ukuba ukusetyenziswa kwexesha elifutshane okanye uqhagamshelwano olude, i-HEC ayibonisi nayiphi na ingozi enokubakho kwimpilo yabantu. Kwangaxeshanye, ubuhlobo bayo bokusingqongileyo bukwayenza ibe sisithako sokuthambisa esithandwayo namhlanje njengoko uphuhliso oluzinzileyo kunye nokwazisa ngokusingqongileyo kusanda ngokuthe ngcembe. Abathengi akufuneki bakhathazeke malunga nokhuseleko lwayo xa besebenzisa iimveliso ezine-hydroxyethyl cellulose, kwaye banokonwabela amava okusebenzisa agqwesileyo kunye neziphumo ezizisayo.
Ixesha lokuposa: Sep-02-2024